Optical fiber Splicer QA
Optical fiber Splicer Class-10 Questions and Answers
Optical Fiber Splicer QA for Class 10 students, covering fiber optic communication, splicing tools, OFC cable laying, OTDR testing, health & safety and networking MCQs in Bengali and English.
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MCQ SET 1
Unit 1: Fiber Optic Communication and Route Inspection â Multiple Choice Questions (MCQs) â 20 Ã 1 = 20
(What is the main material of an optical fiber?)
- a) āĻĒā§āϞāĻžāϏā§āĻāĻŋāĻ (Plastic)
- b) āĻāĻžāĻāĻ/āĻā§āϞāĻžāϏ (Glass)
- c) āϤāĻžāĻŽāĻž (Copper)
- d) āĻ ā§āϝāĻžāϞā§āĻŽāĻŋāύāĻŋāϝāĻŧāĻžāĻŽ (Aluminium)
Answer (click to explore)
Correct: b) āĻāĻžāĻāĻ/āĻā§āϞāĻžāϏ (Glass)
(In fiber optic communication, information is transmitted in the form of what?)
- a) āĻļāĻŦā§āĻĻ āϤāϰāĻā§āĻ (Sound waves)
- b) āĻāϞā§āĻ āϤāϰāĻā§āĻ (Light waves)
- c) āϤāĻžāĻĒ āĻļāĻā§āϤāĻŋ (Heat energy)
- d) āϝāĻžāύā§āϤā§āϰāĻŋāĻ āĻāĻŽā§āĻĒāύ (Mechanical vibration)
Answer (click to explore)
Correct: b) āĻāϞā§āĻ āϤāϰāĻā§āĻ (Light waves)
(Through which part does light travel inside an optical fiber?)
- a) āĻā§āϰ (Core)
- b) āĻā§āϞā§āϝāĻžāĻĄāĻŋāĻ (Cladding)
- c) āĻāĻāĻāĻžāϰ āĻā§āϝāĻžāĻā§āĻ (Outer jacket)
- d) āϏā§āĻā§āϰā§āύ āϰāĻŋāϞāĻŋāĻĢ (Strain relief)
Answer (click to explore)
Correct: a) āĻā§āϰ (Core)
(What is the main function of cladding?)
- a) āĻā§āϰāĻā§ āϰāĻ āĻāϰāĻž (To colour the core)
- b) āĻāϞ⧠āĻŦāĻžāĻāϰ⧠āĻŦā§āϰāĻŋāϝāĻŧā§ āϝāĻžāĻāϝāĻŧāĻž āϰā§āϧ āĻāϰāĻž (To prevent light from escaping)
- c) āĻĢāĻžāĻāĻŦāĻžāϰāĻā§ āĻ āĻžāύā§āĻĄāĻž āϰāĻžāĻāĻž (To keep fiber cool)
- d) āĻĢāĻžāĻāĻŦāĻžāϰāĻā§ āĻŽāĻžāĻāĻŋāϤ⧠āĻŦāĻžāĻāϧāĻž (To tie fiber to ground)
Answer (click to explore)
Correct: b) āĻāϞ⧠āĻŦāĻžāĻāϰ⧠āĻŦā§āϰāĻŋāϝāĻŧā§ āϝāĻžāĻāϝāĻŧāĻž āϰā§āϧ āĻāϰāĻž (To prevent light from escaping)
(On which principle does an optical fiber work?)
- a) āĻĒā§āϰāϤāĻŋāĻĢāϞāύ (Reflection)
- b) āĻ āĻĒāĻŦāϰā§āϤāύ (Refraction)
- c) āĻĒā§āϰā§āĻŖ āĻ āĻā§āϝāύā§āϤāϰā§āĻŖ āĻĒā§āϰāϤāĻŋāĻĢāϞāύ (Total internal reflection)
- d) āĻŦāĻŋāĻā§āĻā§āϰāĻŖ (Scattering)
Answer (click to explore)
Correct: c) āĻĒā§āϰā§āĻŖ āĻ āĻā§āϝāύā§āϤāϰā§āĻŖ āĻĒā§āϰāϤāĻŋāĻĢāϞāύ (Total internal reflection)
(Which parameter indicates the light-gathering ability of an optical fiber?)
- a) āĻŦā§āϝāĻžāύā§āĻĄāĻāĻāĻĨ (Bandwidth)
- b) āύāĻŋāĻāĻŽā§āϰāĻŋāĻā§āϝāĻžāϞ āĻ ā§āϝāĻžāĻĒāĻžāϰāĻāĻžāϰ (Numerical aperture)
- c) āĻĻā§āϰā§āĻā§āϝ (Length)
- d) āĻŦā§āϝāĻžāϏ (Diameter)
Answer (click to explore)
Correct: b) āύāĻŋāĻāĻŽā§āϰāĻŋāĻā§āϝāĻžāϞ āĻ ā§āϝāĻžāĻĒāĻžāϰāĻāĻžāϰ (Numerical aperture)
(Snellâs law relates which two angles?)
- a) āĻāĻĒāϤāύ āĻ āĻĒā§āϰāϤāĻŋāĻĢāϞāύ āĻā§āĻŖ (Angle of incidence and reflection)
- b) āĻāĻĒāϤāύ āĻ āĻ āĻĒāĻŦāϰā§āϤāύ āĻā§āĻŖ (Angle of incidence and refraction)
- c) āĻ āĻĒāĻŦāϰā§āϤāύ āĻ āĻŦāĻŋāĻā§āĻā§āϰāĻŖ āĻā§āĻŖ (Angle of refraction and scattering)
- d) āĻĒā§āϰāϤāĻŋāĻĢāϞāύ āĻ āĻŦāĻŋāĻā§āĻā§āϰāĻŖ āĻā§āĻŖ (Angle of reflection and scattering)
Answer (click to explore)
Correct: b) āĻāĻĒāϤāύ āĻ āĻ āĻĒāĻŦāϰā§āϤāύ āĻā§āĻŖ (Angle of incidence and refraction)
(How are fibers classified based on the number of modes?)
- a) āϏāĻŋāĻā§āĻā§āϞ-āĻŽā§āĻĄ āĻ āĻŽāĻžāϞā§āĻāĻŋ-āĻŽā§āĻĄ (Single-mode and multi-mode)
- b) āĻĒāĻžāϤāϞāĻž āĻ āĻŽā§āĻāĻž (Thin and thick)
- c) āĻā§āĻ āĻ āĻŦāĻĄāĻŧ (Short and long)
- d) āϏāϏā§āϤāĻž āĻ āĻĻāĻžāĻŽā§ (Cheap and expensive)
Answer (click to explore)
Correct: a) āϏāĻŋāĻā§āĻā§āϞ-āĻŽā§āĻĄ āĻ āĻŽāĻžāϞā§āĻāĻŋ-āĻŽā§āĻĄ (Single-mode and multi-mode)
(What is the gradual decrease in signal power in a fiber called?)
- a) āĻā§āĻāύ (Gain)
- b) āĻ ā§āϝāĻžāĻā§āύā§āϝāĻŧā§āĻļāύ/āĻā§āώāϝāĻŧ (Attenuation)
- c) āĻĒā§āϰāϤāĻŋāĻĢāϞāύ (Reflection)
- d) āĻĄāĻŋāϏāĻĒāĻžāϰāĻļāύ (Dispersion)
Answer (click to explore)
Correct: b) āĻ ā§āϝāĻžāĻā§āύā§āϝāĻŧā§āĻļāύ/āĻā§āώāϝāĻŧ (Attenuation)
(Which of the following is NOT a basic element of a fiber optic communication system?)
- a) āĻā§āϰāĻžāύā§āϏāĻŽāĻŋāĻāĻžāϰ (Transmitter)
- b) āĻ āĻĒāĻāĻŋāĻā§āϝāĻžāϞ āĻĢāĻžāĻāĻŦāĻžāϰ āĻā§āϝāĻžāύā§āϞ (Optical fiber channel)
- c) āϰāĻŋāϏāĻŋāĻāĻžāϰ (Receiver)
- d) āϏā§āϞāĻžāϰ āĻĒā§āϝāĻžāύā§āϞ (Solar panel)
Answer (click to explore)
Correct: d) āϏā§āϞāĻžāϰ āĻĒā§āϝāĻžāύā§āϞ (Solar panel)
(What does an OFC route plan mainly show?)
- a) āĻļā§āϧā§āĻŽāĻžāϤā§āϰ āĻā§āĻŦāϞā§āϰ āϰāĻ (Only cable colour)
- b) āĻā§āĻŦāϞā§āϰ āϏāĻŽā§āĻāĻžāĻŦā§āϝ āĻĒāĻĨ āĻ āĻā§āϰā§āϤā§āĻŦāĻĒā§āϰā§āĻŖ āĻĒāϝāĻŧā§āύā§āĻ (Probable cable path and key points)
- c) āĻĢāĻžāĻāĻŦāĻžāϰā§āϰ āĻŦā§āϝāĻžāύā§āĻĄāĻāĻāĻĨ (Fiber bandwidth)
- d) āĻĢāĻžāĻāĻŦāĻžāϰā§āϰ āĻā§āϰ āĻĄāĻžāϝāĻŧāĻžāĻŽāĻŋāĻāĻžāϰ (Fiber core diameter)
Answer (click to explore)
Correct: b) āĻā§āĻŦāϞā§āϰ āϏāĻŽā§āĻāĻžāĻŦā§āϝ āĻĒāĻĨ āĻ āĻā§āϰā§āϤā§āĻŦāĻĒā§āϰā§āĻŖ āĻĒāϝāĻŧā§āύā§āĻ (Probable cable path and key points)
(What is the main purpose of route inspection?)
- a) āĻā§āĻŦāϞ āĻāĻŋāύ⧠āĻāύāĻž (To purchase cable)
- b) āϏāĻŽā§āĻāĻžāĻŦā§āϝ āĻŦāĻžāϧāĻž āĻ āĻā§āĻāĻāĻŋ āĻāĻŋāĻšā§āύāĻŋāϤ āĻāϰāĻž (To identify obstacles and risks)
- c) āĻĢāĻžāĻāĻŦāĻžāϰā§āϰ āĻŦā§āϝāĻžāϏ āĻŽāĻžāĻĒāĻž (To measure fiber diameter)
- d) āĻļā§āϧā§āĻŽāĻžāϤā§āϰ āϰāĻŋāĻĒā§āϰā§āĻ āϞā§āĻāĻž (Only to write a report)
Answer (click to explore)
Correct: b) āϏāĻŽā§āĻāĻžāĻŦā§āϝ āĻŦāĻžāϧāĻž āĻ āĻā§āĻāĻāĻŋ āĻāĻŋāĻšā§āύāĻŋāϤ āĻāϰāĻž (To identify obstacles and risks)
(Which of the following is checked during route inspection?)
- a) āĻā§āĻŦāϞā§āϰ āϰāĻ (Colour of cable)
- b) āĻŽāĻžāĻāĻŋāϰ āĻ āĻŦāϏā§āĻĨāĻž āĻ āĻŦāĻŋāĻĻā§āϝāĻŽāĻžāύ āĻĒāĻžāĻāĻĒāϞāĻžāĻāύ (Soil condition and existing pipelines)
- c) āĻĢāĻžāĻāĻŦāĻžāϰ āĻā§āϰ āύāĻŽā§āĻŦāϰ (Fiber core number)
- d) āĻā§āϰā§āϰ āϰāĻŋāĻĢā§āϰā§āĻā§āĻāĻŋāĻ āĻāύāĻĄā§āĻā§āϏ āĻā§āĻŦāĻŋāϞ (Table of core refractive index)
Answer (click to explore)
Correct: b) āĻŽāĻžāĻāĻŋāϰ āĻ āĻŦāϏā§āĻĨāĻž āĻ āĻŦāĻŋāĻĻā§āϝāĻŽāĻžāύ āĻĒāĻžāĻāĻĒāϞāĻžāĻāύ (Soil condition and existing pipelines)
(What should generally be done for OFC installation in water-logged areas?)
- a) āϏāϰāĻžāϏāϰāĻŋ āĻā§āϞāĻž āĻŽāĻžāĻāĻŋāϤ⧠āĻā§āĻŦāϞ āĻĒā§āĻāϤ⧠āĻĻā§āĻāϝāĻŧāĻž (Directly bury cable in open soil)
- b) āĻāĻĒāϝā§āĻā§āϤ āĻĄāĻžāĻā§āϤ/āĻĒāĻžāĻāĻĒ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻž (Use proper ducts/pipes)
- c) āĻā§āύ⧠āĻĒāϰāĻŋāĻāϞā§āĻĒāύāĻž āĻāĻžāĻĄāĻŧāĻžāĻ āĻā§āĻŦāϞ āĻāĻžāύāĻž (Lay without any planning)
- d) āĻļā§āϧā§āĻŽāĻžāϤā§āϰ āĻā§āϰ āĻĒāϰāĻŋāĻŦāϰā§āϤāύ āĻāϰāĻž (Only change the core)
Answer (click to explore)
Correct: b) āĻāĻĒāϝā§āĻā§āϤ āĻĄāĻžāĻā§āϤ/āĻĒāĻžāĻāĻĒ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻž (Use proper ducts/pipes)
(In which unit is fiber loss usually expressed?)
- a) āĻāϝāĻŧāĻžāĻ (Watt)
- b) āĻā§āϞā§āĻ (Volt)
- c) āĻĄā§āϏāĻŋāĻŦā§āϞ āĻĒā§āϰāϤāĻŋ āĻāĻŋāϞā§āĻŽāĻŋāĻāĻžāϰ (dB/km)
- d) āĻšāĻžāϰā§āĻāĻ (Hertz)
Answer (click to explore)
Correct: c) āĻĄā§āϏāĻŋāĻŦā§āϞ āĻĒā§āϰāϤāĻŋ āĻāĻŋāϞā§āĻŽāĻŋāĻāĻžāϰ (dB/km)
(As fiber length increases, how does attenuation generally change?)
- a) āĻā§āώāϝāĻŧ āĻāĻŽā§ āϝāĻžāϝāĻŧ (Loss decreases)
- b) āĻā§āώāϝāĻŧ āĻ āĻĒāϰāĻŋāĻŦāϰā§āϤāĻŋāϤ āĻĨāĻžāĻā§ (Loss remains same)
- c) āĻā§āώāϝāĻŧ āĻŦā§āĻĻā§āϧāĻŋ āĻĒāĻžāϝāĻŧ (Loss increases)
- d) āĻā§āώāϝāĻŧ āĻļā§āύā§āϝ āĻšāϝāĻŧ (Loss becomes zero)
Answer (click to explore)
Correct: c) āĻā§āώāϝāĻŧ āĻŦā§āĻĻā§āϧāĻŋ āĻĒāĻžāϝāĻŧ (Loss increases)
(Which document is usually prepared after route inspection?)
- a) āĻĒāĻžāĻāϝāĻŧāĻžāϰ āĻŽāĻŋāĻāĻžāϰ āϰāĻŋāĻĒā§āϰā§āĻ (Power meter report)
- b) OTDR āĻā§āϰā§āϏ āϰāĻŋāĻĒā§āϰā§āĻ (OTDR trace report)
- c) āϰā§āĻ āĻāύāϏā§āĻĒā§āĻāĻļāύ āϰāĻŋāĻĒā§āϰā§āĻ (Route inspection report)
- d) āϏā§āĻĒā§āϞāĻžāĻāϏ āϞāϏ āϰāĻŋāĻĒā§āϰā§āĻ (Splice loss report)
Answer (click to explore)
Correct: c) āϰā§āĻ āĻāύāϏā§āĻĒā§āĻāĻļāύ āϰāĻŋāĻĒā§āϰā§āĻ (Route inspection report)
(In an optical fiber cable, how is the coreâs refractive index relative to the cladding?)
- a) āϏāĻŽāĻžāύ (Equal)
- b) āĻāĻŽ (Less)
- c) āĻŦā§āĻļāĻŋ (Greater)
- d) āĻāĻāύ⧠āĻŦā§āĻļāĻŋ, āĻāĻāύ⧠āĻāĻŽ (Sometimes greater, sometimes less)
Answer (click to explore)
Correct: c) āĻŦā§āĻļāĻŋ (Greater)
(Which of the following is usually NOT shown in an OFC route diagram?)
- a) āĻāϝāĻŧā§āύā§āĻ āϞā§āĻā§āĻļāύ (Joint locations)
- b) āĻŽā§āϝāĻžāύāĻšā§āϞ/āĻā§āĻŽā§āĻŦāĻžāϰ (Manholes/chambers)
- c) āĻā§āϰā§āϰ āϰāĻŋāĻĢā§āϰā§āĻā§āĻāĻŋāĻ āĻāύāĻĄā§āĻā§āϏ (Core refractive index)
- d) āϰāĻžāϏā§āϤāĻž āĻ āĻŦāĻžāϧāĻž (Roads and obstacles)
Answer (click to explore)
Correct: c) āĻā§āϰā§āϰ āϰāĻŋāĻĢā§āϰā§āĻā§āĻāĻŋāĻ āĻāύāĻĄā§āĻā§āϏ (Core refractive index)
(What is a major advantage of fiber optic cables compared to copper cables?)
- a) āĻŦā§āĻļāĻŋ āĻāϞā§āĻā§āĻā§āϰāĻŋāĻāĻžāϞ āύā§ā§āĻ (More electrical noise)
- b) āĻāĻŽ āĻŦā§āϝāĻžāύā§āĻĄāĻāĻāĻĨ (Lower bandwidth)
- c) āĻŦā§āĻļāĻŋ āĻĄā§āĻāĻž āĻāϤāĻŋ āĻ āĻāĻŽ āĻā§āώāϝāĻŧ (Higher data rate and lower loss)
- d) āĻāĻžāϰ⧠āĻ āĻŽā§āĻāĻž āĻā§āĻŦāϞ (Heavier and thicker cable)
Answer (click to explore)
Correct: c) āĻŦā§āĻļāĻŋ āĻĄā§āĻāĻž āĻāϤāĻŋ āĻ āĻāĻŽ āĻā§āώāϝāĻŧ (Higher data rate and lower loss)
Unit 2: Splicing Tools and Process â Multiple Choice Questions (MCQs) â 20 Ã 1 = 20
(What is the process of permanently joining two optical fibers called?)
- a) āĻāĻžāύā§āĻā§āĻāϰāĻžāĻāĻā§āĻļāύ (Connectorization)
- b) āĻĢāĻŋāĻāĻļāύ āϏā§āĻĒā§āϞāĻžāĻāϏāĻŋāĻ (Fusion splicing)
- c) āĻŽā§āĻāĻžāύāĻŋāĻā§āϝāĻžāϞ āĻāϝāĻŧā§āύā§āĻ (Mechanical joint)
- d) āĻā§āϰāĻŋāĻŽā§āĻĒāĻŋāĻ (Crimping)
Answer (click to explore)
Correct: b) āĻĢāĻŋāĻāĻļāύ āϏā§āĻĒā§āϞāĻžāĻāϏāĻŋāĻ (Fusion splicing)
(Which type of splice is temporary and can be disconnected?)
- a) āĻĢāĻŋāĻāĻļāύ āϏā§āĻĒā§āϞāĻžāĻāϏ (Fusion splice)
- b) āĻŽā§āĻāĻžāύāĻŋāĻā§āϝāĻžāϞ āϏā§āĻĒā§āϞāĻžāĻāϏ (Mechanical splice)
- c) āĻāϝāĻŧā§āϞā§āĻĄā§āĻĄ āϏā§āĻĒā§āϞāĻžāĻāϏ (Welded splice)
- d) āϏā§āϞā§āĻĄāĻžāϰ āϏā§āĻĒā§āϞāĻžāĻāϏ (Solder splice)
Answer (click to explore)
Correct: b) āĻŽā§āĻāĻžāύāĻŋāĻā§āϝāĻžāϞ āϏā§āĻĒā§āϞāĻžāĻāϏ (Mechanical splice)
(Which tool is used to cut the fiber ends in fusion splicing?)
- a) āϏā§āĻā§āϰ⧠āĻĄā§āϰāĻžāĻāĻāĻžāϰ (Screwdriver)
- b) āĻĒā§āϰāĻŋāϏāĻŋāĻļāύ āĻā§āϞāĻŋāĻāĻžāϰ (Precision cleaver)
- c) āĻĒā§āϞāĻžāϝāĻŧāĻžāϰā§āϏ (Pliers)
- d) āĻšāĻžāϤā§āĻĄāĻŧāĻŋ (Hammer)
Answer (click to explore)
Correct: b) āĻĒā§āϰāĻŋāϏāĻŋāĻļāύ āĻā§āϞāĻŋāĻāĻžāϰ (Precision cleaver)
(What is the tool used to remove the fiber coating/buffer called?)
- a) āϏā§āĻā§āϰāĻŋāĻĒāĻžāϰ āĻŦāĻž āĻĢāĻžāĻāĻŦāĻžāϰ āϏā§āĻā§āϰāĻŋāĻĒāĻžāϰ (Stripper/Fiber stripper)
- b) āĻāĻŋāĻāĻŦ āĻāĻžāĻāĻžāϰ (Tube cutter)
- c) āĻŽāĻŋāĻāĻžāϰ āϰāĻĄ (Measuring rod)
- d) āϏā§āϞā§āĻĄāĻžāϰāĻŋāĻ āĻāϝāĻŧāϰāύ (Soldering iron)
Answer (click to explore)
Correct: a) āϏā§āĻā§āϰāĻŋāĻĒāĻžāϰ āĻŦāĻž āĻĢāĻžāĻāĻŦāĻžāϰ āϏā§āĻā§āϰāĻŋāĻĒāĻžāϰ (Stripper/Fiber stripper)
(What is commonly used to clean the fiber before splicing?)
- a) āϏāĻžāĻĻāĻž āĻĒāĻžāύāĻŋ (Plain water)
- b) āĻāĻāϏā§āĻĒā§āϰā§āĻĒāĻžāĻāϞ āĻ ā§āϝāĻžāϞāĻā§āĻšāϞ āĻ āĻāĻŋāϏā§āϝ⧠(Isopropyl alcohol and tissue)
- c) āĻĒā§āĻā§āϰā§āϞ (Petrol)
- d) āϤā§āϞ (Oil)
Answer (click to explore)
Correct: b) āĻāĻāϏā§āĻĒā§āϰā§āĻĒāĻžāĻāϞ āĻ ā§āϝāĻžāϞāĻā§āĻšāϞ āĻ āĻāĻŋāϏā§āϝ⧠(Isopropyl alcohol and tissue)
(What is the first step performed by a fusion splicing machine?)
- a) āĻĢāĻžāĻāĻŦāĻžāϰ āĻĒā§āĻĄāĻŧāĻŋāϝāĻŧā§ āĻĢā§āϞāĻž (Burn the fiber)
- b) āĻĢāĻžāĻāĻŦāĻžāϰā§āϰ āĻā§āϰ āĻāϞāĻžāĻāύāĻŽā§āύā§āĻ āĻāϰāĻž (Align the fiber cores)
- c) āĻā§āϝāĻžāĻā§āĻ āĻāĻžāĻāĻž (Cut the jacket)
- d) āĻā§āĻŦāϞ āĻāĻžāύāĻž (Pull the cable)
Answer (click to explore)
Correct: b) āĻĢāĻžāĻāĻŦāĻžāϰā§āϰ āĻā§āϰ āĻāϞāĻžāĻāύāĻŽā§āύā§āĻ āĻāϰāĻž (Align the fiber cores)
(What is used to mechanically protect the splice point?)
- a) āĻĒā§āϰā§āĻā§āĻāĻļāύ āϏā§āϞāĻŋāĻ (Protection sleeve)
- b) āĻā§āĻĒ (Tape)
- c) āĻā§āϞā§āϝāĻžāĻŽā§āĻĒ (Clamp)
- d) āĻĒā§āϞāĻžāϏā§āĻāĻŋāĻ āĻāĻžāĻ (Plastic tie)
Answer (click to explore)
Correct: a) āĻĒā§āϰā§āĻā§āĻāĻļāύ āϏā§āϞāĻŋāĻ (Protection sleeve)
(Which splicing-related tool is more suitable for cutting cable from the drum?)
- a) āϰāĻžāĻāύā§āĻĄ āĻāĻŋāĻāĻŦ āĻāĻžāĻāĻžāϰ (Round tube cutter)
- b) āĻĢāĻžāĻāϞ (File)
- c) āϏā§āĻā§āϞ (Scale)
- d) āϏā§āϝāĻžāύā§āĻĄ āĻĒā§āĻĒāĻžāϰ (Sand paper)
Answer (click to explore)
Correct: a) āϰāĻžāĻāύā§āĻĄ āĻāĻŋāĻāĻŦ āĻāĻžāĻāĻžāϰ (Round tube cutter)
(Compared to fusion splice, mechanical splice generally has â)
- a) āĻāĻŽ āϞāϏ (Lower loss)
- b) āĻŦā§āĻļāĻŋ āϞāϏ (Higher loss)
- c) āĻļā§āύā§āϝ āϞāϏ (Zero loss)
- d) āĻāĻāĻ āϞāϏ (Same loss)
Answer (click to explore)
Correct: b) āĻŦā§āĻļāĻŋ āϞāϏ (Higher loss)
(What is the main purpose of splicing?)
- a) āĻā§āĻŦāϞāĻā§ āϰāĻāĻŋāύ āĻāϰāĻž (To colour the cable)
- b) āĻĻā§āĻāĻŋ āĻĢāĻžāĻāĻŦāĻžāϰāĻā§ āϝā§āĻā§āϤ āĻāϰ⧠āϏāĻŋāĻāύā§āϝāĻžāϞā§āϰ āϧāĻžāϰāĻžāĻŦāĻžāĻšāĻŋāĻāϤāĻž āϰāĻžāĻāĻž (To join two fibers and maintain signal continuity)
- c) āĻā§āĻŦāϞ āĻā§āĻ āĻāϰāĻž (To shorten the cable)
- d) āĻā§āĻŦāϞ āĻāĻžāϰ⧠āĻāϰāĻž (To make cable heavier)
Answer (click to explore)
Correct: b) āĻĻā§āĻāĻŋ āĻĢāĻžāĻāĻŦāĻžāϰāĻā§ āϝā§āĻā§āϤ āĻāϰ⧠āϏāĻŋāĻāύā§āϝāĻžāϞā§āϰ āϧāĻžāϰāĻžāĻŦāĻžāĻšāĻŋāĻāϤāĻž āϰāĻžāĻāĻž (To join two fibers and maintain signal continuity)
(Which of the following is a basic hand tool?)
- a) āĻĢāĻŋāĻāĻļāύ āϏā§āĻĒā§āϞāĻžāĻāϏ āĻŽā§āĻļāĻŋāύ (Fusion splicing machine)
- b) āϏā§āĻā§āϰ⧠āĻĄā§āϰāĻžāĻāĻāĻžāϰ (Screwdriver)
- c) OTDR
- d) āĻāĻŋāĻā§āϝāĻŧāĻžāϞ āĻĢāϞā§āĻ āϞā§āĻā§āĻāϰ (Visual fault locator)
Answer (click to explore)
Correct: b) āϏā§āĻā§āϰ⧠āĻĄā§āϰāĻžāĻāĻāĻžāϰ (Screwdriver)
(What is usually included in a âtermination kitâ used during splicing?)
- a) āĻā§āĻŦāϞ āĻĄā§āϰāĻžāĻŽ (Cable drum)
- b) āĻāĻžāύā§āĻā§āĻāϰ, āĻā§āϞāĻŋāύāĻŋāĻ āĻā§āϞ, āĻā§āϰāĻŋāĻŽā§āĻĒ āĻā§āϞ (Connectors, cleaning tools, crimp tools)
- c) āĻļā§āϧ⧠āĻšāĻžāϤā§āĻĄāĻŧāĻŋ (Only hammer)
- d) āĻļā§āϧā§āĻŽāĻžāϤā§āϰ āĻŽāĻŋāĻāĻžāϰ āϰā§āϞ (Only meter rule)
Answer (click to explore)
Correct: b) āĻāĻžāύā§āĻā§āĻāϰ, āĻā§āϞāĻŋāύāĻŋāĻ āĻā§āϞ, āĻā§āϰāĻŋāĻŽā§āĻĒ āĻā§āϞ (Connectors, cleaning tools, crimp tools)
(Which instrument is most commonly used to test splice quality?)
- a) āĻŽāĻžāϞā§āĻāĻŋāĻŽāĻŋāĻāĻžāϰ (Multimeter)
- b) OTDR
- c) āĻāϏāĻŋāϞā§āϏā§āĻā§āĻĒ (Oscilloscope)
- d) āĻŦā§āϝāĻžāĻāĻžāϰāĻŋ āĻāĻžāϰā§āĻāĻžāϰ (Battery charger)
Answer (click to explore)
Correct: b) OTDR
(What happens if there is dirt on the fiber during splicing?)
- a) āϞāϏ āĻāĻŽā§ āϝāĻžāϝāĻŧ (Loss decreases)
- b) āϞāϏ āĻŦā§āĻĄāĻŧā§ āϝāĻžāϝāĻŧ āĻāĻŦāĻ āϰāĻŋāĻĢā§āϞā§āĻāĻļāύ āĻšāϝāĻŧ (Loss increases and reflection occurs)
- c) āĻā§āύ⧠āĻĒā§āϰāĻāĻžāĻŦ āĻĒāĻĄāĻŧā§ āύāĻž (No effect)
- d) āĻĢāĻžāĻāĻŦāĻžāϰā§āϰ āĻĻā§āϰā§āĻā§āϝ āĻŦāĻžāĻĄāĻŧā§ (Fiber length increases)
Answer (click to explore)
Correct: b) āϞāϏ āĻŦā§āĻĄāĻŧā§ āϝāĻžāϝāĻŧ āĻāĻŦāĻ āϰāĻŋāĻĢā§āϞā§āĻāĻļāύ āĻšāϝāĻŧ (Loss increases and reflection occurs)
(Which of the following is NOT a splicing tool?)
- a) āĻā§āϞāĻŋāĻāĻžāϰ (Cleaver)
- b) āĻĢāĻžāĻāĻŦāĻžāϰ āϏā§āĻā§āϰāĻŋāĻĒāĻžāϰ (Fiber stripper)
- c) āĻāĻŋāĻā§āϝāĻŧāĻžāϞ āĻĢāϞā§āĻ āϞā§āĻā§āĻāϰ (Visual fault locator)
- d) āĻšā§āϝāĻŧāĻžāϰ āĻĄā§āϰāĻžāϝāĻŧāĻžāϰ (Hair dryer)
Answer (click to explore)
Correct: d) āĻšā§āϝāĻŧāĻžāϰ āĻĄā§āϰāĻžāϝāĻŧāĻžāϰ (Hair dryer)
(Which should be done for safety during splicing?)
- a) āĻāĻžāϞāĻŋ āĻšāĻžāϤ⧠āĻĢāĻžāĻāĻŦāĻžāϰ āĻāĻžāĻāĻž (Cut fiber with bare hands)
- b) āϏā§āĻĢāĻāĻŋ āĻāĻāϞāϏ āĻ āĻā§āϞāĻžāĻāϏ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻž (Use safety goggles and gloves)
- c) āĻĢāĻžāĻāĻŦāĻžāϰ āĻā§āĻāϰāĻž āĻŽāĻžāĻāĻŋāϤ⧠āĻĢā§āϞ⧠āϰāĻžāĻāĻž (Leave fiber scraps on the floor)
- d) āϞā§āĻāĻžāϰ āϏāϰāĻžāϏāϰāĻŋ āĻā§āĻā§ āĻĻā§āĻāĻž (Look directly into laser)
Answer (click to explore)
Correct: b) āϏā§āĻĢāĻāĻŋ āĻāĻāϞāϏ āĻ āĻā§āϞāĻžāĻāϏ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻž (Use safety goggles and gloves)
(Typical fusion splice loss usually lies around which value?)
- a) āĻĒā§āϰāĻžāϝāĻŧ 0.02â0.1 dB (About 0.02â0.1 dB)
- b) āĻĒā§āϰāĻžāϝāĻŧ 5â10 dB
- c) āĻĒā§āϰāĻžāϝāĻŧ 50 dB
- d) āĻĒā§āϰāĻžāϝāĻŧ 0 dB āĻ āĻŋāĻāĻ (Exactly 0 dB)
Answer (click to explore)
Correct: a) āĻĒā§āϰāĻžāϝāĻŧ 0.02â0.1 dB (About 0.02â0.1 dB)
(After splicing, where are the cables properly arranged?)
- a) āϏā§āĻĒā§āϞāĻžāĻāϏ āĻā§āϰ⧠(Splice tray)
- b) āĻā§āĻŦāϞ āĻĄā§āϰāĻžāĻŽ (Cable drum)
- c) āĻĒāĻžāĻāϝāĻŧāĻžāϰ āĻĒā§āϝāĻžāύā§āϞ (Power panel)
- d) āĻŦā§āϝāĻžāĻāĻžāϰāĻŋ āĻŦāĻā§āϏ (Battery box)
Answer (click to explore)
Correct: a) āϏā§āĻĒā§āϞāĻžāĻāϏ āĻā§āϰ⧠(Splice tray)
(Which is a part of the âtroubleshootingâ step during splicing?)
- a) āύāϤā§āύ āĻĄā§āϰāĻžāĻŽ āĻā§āύāĻž (Buying new drum)
- b) āĻŦā§āĻļāĻŋ āϞāϏ āĻĒāĻžāĻā§āĻž āĻā§āϞ⧠āϏā§āĻĒā§āϞāĻžāĻāϏ āĻĒā§āύāϰāĻžāϝāĻŧ āĻāϰāĻž (Re-splicing if high loss is observed)
- c) āĻĢāĻžāĻāĻŦāĻžāϰā§āϰ āĻā§āϰ āϰāĻ āĻāϰāĻž (Colouring fiber core)
- d) OTDR āĻŦāύā§āϧ āϰāĻžāĻāĻž (Keeping OTDR switched off)
Answer (click to explore)
Correct: b) āĻŦā§āĻļāĻŋ āϞāϏ āĻĒāĻžāĻā§āĻž āĻā§āϞ⧠āϏā§āĻĒā§āϞāĻžāĻāϏ āĻĒā§āύāϰāĻžāϝāĻŧ āĻāϰāĻž (Re-splicing if high loss is observed)
(Which connector is commonly used in optical fiber?)
- a) RJ11
- b) SC āĻāĻžāύā§āĻā§āĻāϰ (SC connector)
- c) VGA
- d) HDMI
Answer (click to explore)
Correct: b) SC āĻāĻžāύā§āĻā§āĻāϰ (SC connector)
Unit 3: Cable laying and Installation â Multiple Choice Questions (MCQs) â 20 Ã 1 = 20
(What is the first thing to check while unloading cable from a cable drum?)
- a) āĻĄā§āϰāĻžāĻŽā§āϰ āϰāĻ (Colour of drum)
- b) āĻĄā§āϰāĻžāĻŽ āĻ āĻā§āĻŦāϞā§āϰ āĻā§āώāϤāĻŋ āĻāĻā§ āĻāĻŋ āύāĻž (Any damage to drum and cable)
- c) āĻĄā§āϰāĻžāĻŽā§āϰ āĻāĻāύ (Weight of drum)
- d) āĻā§āϰ āϏāĻāĻā§āϝāĻž (Number of cores)
Answer (click to explore)
Correct: b) āĻĄā§āϰāĻžāĻŽ āĻ āĻā§āĻŦāϞā§āϰ āĻā§āώāϤāĻŋ āĻāĻā§ āĻāĻŋ āύāĻž (Any damage to drum and cable)
(How should a cable drum normally be stored?)
- a) āϏāĻŽā§āĻĒā§āϰā§āĻŖ āĻāĻžāĻĻāĻžāĻŽāĻžāĻāĻŋāϰ āĻŽāϧā§āϝ⧠(Fully in mud)
- b) āϏā§āĻāĻž āĻāĻŦāĻ āϏāĻŽāϤāϞ āĻāĻžāϝāĻŧāĻāĻžāϝāĻŧ (Upright on a flat surface)
- c) āĻĸāĻžāϞā§āϤ⧠āĻāĻĄāĻŧāĻŋāϝāĻŧā§ āϰāĻžāĻāĻž (Rolling on a slope)
- d) āĻĒāĻžāύāĻŋāϰ āĻā§āϤāϰ⧠(Inside water)
Answer (click to explore)
Correct: b) āϏā§āĻāĻž āĻāĻŦāĻ āϏāĻŽāϤāϞ āĻāĻžāϝāĻŧāĻāĻžāϝāĻŧ (Upright on a flat surface)
(Which is a common method for underground cable laying?)
- a) āĻāϝāĻŧāĻžāϰ āϞ⧠(Air laying)
- b) āĻā§āϰā§āĻā§āĻāĻŋāĻ (Trenching)
- c) āĻāϝāĻŧā§āϝāĻžāϰāϞā§āϏ (Wireless)
- d) āĻā§āĻŦāϞ āϏāĻžāϏāĻĒā§āύāĻļāύ (Cable suspension)
Answer (click to explore)
Correct: b) āĻā§āϰā§āĻā§āĻāĻŋāĻ (Trenching)
(What is the method of inserting cable inside ducts called?)
- a) āĻŦā§āϞā§ā§āĻŋāĻ (Blowing)
- b) āĻāϝāĻŧā§āϞā§āĻĄāĻŋāĻ (Welding)
- c) āϏā§āϞā§āĻĄāĻžāϰāĻŋāĻ (Soldering)
- d) āĻā§āϞā§āĻāĻ (Gluing)
Answer (click to explore)
Correct: a) āĻŦā§āϞā§ā§āĻŋāĻ (Blowing)
(What is the purpose of using the âfigure-8â method while handling cable?)
- a) āĻā§āĻŦāϞāĻā§ āϏāĻžāĻāĻŋāϝāĻŧā§ āϏā§āύā§āĻĻāϰ āĻĻā§āĻāĻžāύ⧠(To make cable look neat)
- b) āĻā§āĻŦāϞ āĻĒā§āϝāĻžāĻāĻ āĻ āĻā§āĻāϏā§āĻ āĻāĻŽāĻžāύ⧠(To reduce twists and kinks)
- c) āĻā§āĻŦāϞ āĻāĻžāϰ⧠āĻāϰāĻž (To make cable heavier)
- d) āĻā§āĻŦāϞ āĻā§āĻ āĻāϰāĻž (To shorten cable)
Answer (click to explore)
Correct: b) āĻā§āĻŦāϞ āĻĒā§āϝāĻžāĻāĻ āĻ āĻā§āĻāϏā§āĻ āĻāĻŽāĻžāύ⧠(To reduce twists and kinks)
(Before installing cables, work should be done according to which document?)
- a) āĻŦāĻŋāϞ āĻāĻžāĻāĻāĻžāϰ (Bill voucher)
- b) āϰā§āĻ āĻĒā§āϞā§āϝāĻžāύ/āĻāύāϏā§āĻāϞā§āĻļāύ āĻĒā§āϞā§āϝāĻžāύ (Route/installation plan)
- c) āĻŦā§āϝāĻžāĻā§āĻ āϏā§āĻā§āĻāĻŽā§āύā§āĻ (Bank statement)
- d) āĻāύāĻāϝāĻŧā§āϏ (Invoice)
Answer (click to explore)
Correct: b) āϰā§āĻ āĻĒā§āϞā§āϝāĻžāύ/āĻāύāϏā§āĻāϞā§āĻļāύ āĻĒā§āϞā§āϝāĻžāύ (Route/installation plan)
(Which type of pipe is generally used for underground cable laying?)
- a) āĻā§āϝāĻžāϏ āĻĒāĻžāĻāĻĒ (Gas pipe)
- b) āĻĄā§āĻĄāĻŋāĻā§āĻā§āĻĄ āĻāύāĻĄā§āĻāĻ/āĻĄāĻžāĻā§āϤ (Dedicated conduits/ducts)
- c) āĻĒāĻžāύāĻŋāϰ āĻĒāĻžāĻāĻĒ (Water pipe)
- d) āĻĄā§āϰā§āύā§āĻ āĻĒāĻžāĻāĻĒ (Drainage pipe)
Answer (click to explore)
Correct: b) āĻĄā§āĻĄāĻŋāĻā§āĻā§āĻĄ āĻāύāĻĄā§āĻāĻ/āĻĄāĻžāĻā§āϤ (Dedicated conduits/ducts)
(Which site condition is risky during cable laying?)
- a) āĻļā§āĻāύ⧠āϏāĻŽāϤāϞ āĻāĻŽāĻŋ (Dry flat land)
- b) āĻāϞāĻžāĻŦāĻĻā§āϧ āĻāϞāĻžāĻāĻž (Water-logged area)
- c) āĻāĻāĻā§ āϰāĻžāϏā§āϤāĻž (Elevated road)
- d) āĻāĻāĻā§āϰāĻŋāĻ āĻĢā§āϞā§āϰ (Concrete floor)
Answer (click to explore)
Correct: b) āĻāϞāĻžāĻŦāĻĻā§āϧ āĻāϞāĻžāĻāĻž (Water-logged area)
(What may happen if the pulling tension is too high during cable laying?)
- a) āĻā§āĻŦāϞā§āϰ āĻāϰā§āĻŽāĻā§āώāĻŽāϤāĻž āĻŦāĻžāĻĄāĻŧā§ (Cable performance improves)
- b) āĻā§āĻŦāϞ⧠āĻāĻžāĻāύ/āĻā§āώāϤāĻŋ āĻšāϤ⧠āĻĒāĻžāϰ⧠(Cable may break/get damaged)
- c) āĻā§āύ⧠āĻĒāϰāĻŋāĻŦāϰā§āϤāύ āĻšāϝāĻŧ āύāĻž (No change)
- d) āĻā§āĻŦāϞ āĻāϰāĻ āύāĻŽāύā§āϝāĻŧ āĻšāϝāĻŧ (Cable becomes more flexible)
Answer (click to explore)
Correct: b) āĻā§āĻŦāϞ⧠āĻāĻžāĻāύ/āĻā§āώāϤāĻŋ āĻšāϤ⧠āĻĒāĻžāϰ⧠(Cable may break/get damaged)
(Where is aerial cable installation more suitable?)
- a) āϏāĻŽā§āĻĻā§āϰā§āϰ āύā§āĻā§ (Under sea)
- b) āĻŦāĻŋāĻĻā§āϝāĻŽāĻžāύ āĻā§āĻāĻāĻŋ/āĻĒā§āϞ āĻŦāϰāĻžāĻŦāϰ (Along existing poles)
- c) āĻā§āϝāĻžāϏ āĻĒāĻžāĻāĻĒā§āϰ āĻā§āϤāϰ⧠(Inside gas pipes)
- d) āĻāĻŦāύā§āϰ āĻāĻŋāϤāϰ āĻĒāĻžāύāĻŋāϰ āĻā§āϝāĻžāĻā§āĻā§ (Inside water tanks in buildings)
Answer (click to explore)
Correct: b) āĻŦāĻŋāĻĻā§āϝāĻŽāĻžāύ āĻā§āĻāĻāĻŋ/āĻĒā§āϞ āĻŦāϰāĻžāĻŦāϰ (Along existing poles)
(What must be taken care of while rolling a cable drum?)
- a) āϝā§āĻĻāĻŋāĻā§ āĻā§āĻļāĻŋ āĻāĻĄāĻŧāĻžāύ⧠(Roll in any direction)
- b) āύāĻŋāϰā§āϧāĻžāϰāĻŋāϤ āĻā§āϰāĻžāύā§āϰ āĻĻāĻŋāĻ āĻ āύā§āϏāϰāĻŖ āĻāϰāĻž (Follow marked rolling direction)
- c) āĻĻā§āϰā§āϤ āĻāϤāĻŋ āϰāĻžāĻāĻž (Keep very high speed)
- d) āĻĄā§āϰāĻžāĻŽāĻā§ āĻāĻ āĻĒāĻžāĻļā§ āĻĢā§āϞ⧠āϰāĻžāĻāĻž (Throw drum on one side)
Answer (click to explore)
Correct: b) āύāĻŋāϰā§āϧāĻžāϰāĻŋāϤ āĻā§āϰāĻžāύā§āϰ āĻĻāĻŋāĻ āĻ āύā§āϏāϰāĻŖ āĻāϰāĻž (Follow marked rolling direction)
(Why is a map of existing pipelines important during cable installation?)
- a) āĻļā§āϧ⧠āϰāĻ āĻŽāĻŋāϞāĻžāύā§āϰ āĻāύā§āϝ (Only to match colours)
- b) āĻā§āϝāĻžāϏ/āĻĒāĻžāύāĻŋ āϞāĻžāĻāύā§āϰ āĻā§āώāϤāĻŋ āĻāĻĄāĻŧāĻžāϤ⧠(To avoid damaging gas/water lines)
- c) āĻā§āĻŦāϞāĻā§ āĻāĻžāϰ⧠āĻāϰāϤ⧠(To make cable heavy)
- d) āĻā§āĻŦāϞā§āϰ āĻāϤāĻŋ āĻŦāĻžāĻĄāĻŧāĻžāϤ⧠(To increase cable speed)
Answer (click to explore)
Correct: b) āĻā§āϝāĻžāϏ/āĻĒāĻžāύāĻŋ āϞāĻžāĻāύā§āϰ āĻā§āώāϤāĻŋ āĻāĻĄāĻŧāĻžāϤ⧠(To avoid damaging gas/water lines)
(What happens if minimum bend radius is not maintained during installation?)
- a) āĻā§āύ⧠āĻĒā§āϰāĻāĻžāĻŦ āĻĒāĻĄāĻŧā§ āύāĻž (No effect)
- b) āĻŦā§āύā§āĻĄ āϞāϏ/āĻā§āώāϝāĻŧ āĻŦā§āĻĻā§āϧāĻŋ āĻĒāĻžāϝāĻŧ (Bend loss increases)
- c) āĻŦā§āϝāĻžāύā§āĻĄāĻāĻāĻĨ āĻŦāĻžāĻĄāĻŧā§ (Bandwidth increases)
- d) āĻā§āĻŦāϞ āĻĒāĻžāϤāϞāĻž āĻšāϝāĻŧ (Cable becomes thinner)
Answer (click to explore)
Correct: b) āĻŦā§āύā§āĻĄ āϞāϏ/āĻā§āώāϝāĻŧ āĻŦā§āĻĻā§āϧāĻŋ āĻĒāĻžāϝāĻŧ (Bend loss increases)
(What should be the first step in the standard cable installation process?)
- a) āĻā§āϏā§āĻāĻŋāĻ āĻāϰāĻž (Testing)
- b) āĻĒāϰāĻŋāĻāϞā§āĻĒāύāĻž āĻ āϏāĻžāĻāĻ āϏāĻžāϰā§āĻā§ (Planning and site survey)
- c) āĻā§āĻŦāϞ āĻāĻžāĻāĻž (Cutting cable)
- d) āϏā§āĻĒā§āϞāĻžāĻāϏāĻŋāĻ (Splicing)
Answer (click to explore)
Correct: b) āĻĒāϰāĻŋāĻāϞā§āĻĒāύāĻž āĻ āϏāĻžāĻāĻ āϏāĻžāϰā§āĻā§ (Planning and site survey)
(Why is a cable pulling winch used during cable laying?)
- a) āĻā§āĻŦāϞ āĻāϰāĻŽ āĻāϰāϤ⧠(To heat cable)
- b) āύāĻŋāϰā§āĻĻāĻŋāώā§āĻ āĻā§āύāĻļāύ āĻĻāĻŋāϝāĻŧā§ āĻā§āĻŦāϞ āĻāĻžāύāϤ⧠(To pull cable with controlled tension)
- c) āĻā§āĻŦāϞ āϰāĻ āĻāϰāϤ⧠(To paint cable)
- d) āĻā§āĻŦāϞ āĻāĻžāĻāϤ⧠(To cut cable)
Answer (click to explore)
Correct: b) āύāĻŋāϰā§āĻĻāĻŋāώā§āĻ āĻā§āύāĻļāύ āĻĻāĻŋāϝāĻŧā§ āĻā§āĻŦāϞ āĻāĻžāύāϤ⧠(To pull cable with controlled tension)
(How is cable usually laid while crossing a road?)
- a) āϏāϰāĻžāϏāϰāĻŋ āϰāĻžāϏā§āϤāĻžāϰ āĻāĻĒāϰ āĻĻāĻŋāϝāĻŧā§ (Directly over the road)
- b) āĻāύā§āĻĄāĻžāϰāĻā§āϰāĻžāĻāύā§āĻĄ āĻĄāĻžāĻā§āĻ/āĻĒāĻžāĻāĻĒā§āϰ āĻŽāĻžāϧā§āϝāĻŽā§ (Through underground ducts/pipes)
- c) āĻāĻžāĻā§āϰ āϏāĻžāĻĨā§ āĻā§āϞāĻŋāϝāĻŧā§ (Hanging on trees)
- d) āĻĒāĻžāύāĻŋāϰ āĻā§āϤāϰ (Inside water on road)
Answer (click to explore)
Correct: b) āĻāύā§āĻĄāĻžāϰāĻā§āϰāĻžāĻāύā§āĻĄ āĻĄāĻžāĻā§āĻ/āĻĒāĻžāĻāĻĒā§āϰ āĻŽāĻžāϧā§āϝāĻŽā§ (Through underground ducts/pipes)
(What should be done after completing cable laying?)
- a) āĻā§āύ⧠āĻā§āϏā§āĻ āύāĻž āĻāϰ⧠āϏāĻžāĻāĻ āĻā§āĻĄāĻŧā§ āĻĻā§āĻāϝāĻŧāĻž (Leave site without testing)
- b) āĻā§āĻŦāϞ āĻā§āϏā§āĻ āĻ āĻĄāĻā§āĻŽā§āύā§āĻā§āĻļāύ (Cable testing and documentation)
- c) āĻā§āĻŦāϞ āĻā§āĻā§ āĻā§āĻ āĻāϰāĻž (Cut cable shorter)
- d) āϏāĻŦ āĻā§āĻŦāϞ āϤā§āϞ⧠āύā§āĻāϝāĻŧāĻž (Remove all cables)
Answer (click to explore)
Correct: b) āĻā§āĻŦāϞ āĻā§āϏā§āĻ āĻ āĻĄāĻā§āĻŽā§āύā§āĻā§āĻļāύ (Cable testing and documentation)
(What does the arrow mark on a cable drum indicate?)
- a) āĻĄā§āϰāĻžāĻŽā§āϰ āĻāĻāύ (Weight of drum)
- b) āĻā§āϰāĻžāύā§āϰ āϏāĻ āĻŋāĻ āĻĻāĻŋāĻ (Correct direction of rolling)
- c) āĻā§āϰ āϏāĻāĻā§āϝāĻž (Number of cores)
- d) āĻā§āĻŦāϞā§āϰ āĻāĻžāϞāĻžāϰ āĻā§āĻĄ (Cable colour code)
Answer (click to explore)
Correct: b) āĻā§āϰāĻžāύā§āϰ āϏāĻ āĻŋāĻ āĻĻāĻŋāĻ (Correct direction of rolling)
(Which is correct regarding cable storage?)
- a) āĻĄā§āϰāĻžāĻŽāĻā§ āĻāĻžāĻĻāĻž āĻ āĻĒāĻžāύāĻŋāϤ⧠āĻĢā§āϞ⧠āϰāĻžāĻāĻž (Keep drum in mud and water)
- b) āϏāϰāĻžāϏāϰāĻŋ āϏā§āϰā§āϝā§āϰ āϤāĻžāĻĒā§ āĻĻā§āϰā§āĻāĻĻāĻŋāύ āϰāĻžāĻāĻž (Keep long in direct sunlight)
- c) āĻļā§āĻāύā§, āϏāĻŽāϤāϞ āĻ āύāĻŋāϰāĻžāĻĒāĻĻ āĻāĻžāϝāĻŧāĻāĻžāϝāĻŧ āϰāĻžāĻāĻž (Store in dry, flat and safe place)
- d) āϝā§āĻāĻžāĻŦā§ āĻšā§āĻ āĻĢā§āϞ⧠āϰāĻžāĻāĻž (Keep anywhere casually)
Answer (click to explore)
Correct: c) āĻļā§āĻāύā§, āϏāĻŽāϤāϞ āĻ āύāĻŋāϰāĻžāĻĒāĻĻ āĻāĻžāϝāĻŧāĻāĻžāϝāĻŧ āϰāĻžāĻāĻž (Store in dry, flat and safe place)
(What is meant by âsafety and security of siteâ during installation?)
- a) āĻļā§āϧ⧠āĻā§āĻŦāϞā§āϰ āϰāĻ āϏāĻ āĻŋāĻ āĻĨāĻžāĻāĻž (Only correct cable colour)
- b) āĻŽāĻžāύā§āώ, āϝāύā§āϤā§āϰāĻĒāĻžāϤāĻŋ āĻ āĻ āύā§āϝāĻžāύā§āϝā§āϰ āϏā§āϰāĻā§āώāĻž āύāĻŋāĻļā§āĻāĻŋāϤ āĻāϰāĻž (Ensuring safety of people, tools and surroundings)
- c) āĻļā§āϧ⧠āĻĻā§āϰā§āϤ āĻāĻžāĻ āĻļā§āώ āĻāϰāĻž (Only finishing work fast)
- d) āĻā§āĻŦāϞ āĻŦā§āĻļāĻŋ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻž (Using more cable)
Answer (click to explore)
Correct: b) āĻŽāĻžāύā§āώ, āϝāύā§āϤā§āϰāĻĒāĻžāϤāĻŋ āĻ āĻ āύā§āϝāĻžāύā§āϝā§āϰ āϏā§āϰāĻā§āώāĻž āύāĻŋāĻļā§āĻāĻŋāϤ āĻāϰāĻž (Ensuring safety of people, tools and surroundings)
Unit 4: Testing Installation of OFC â Multiple Choice Questions (MCQs) â 20 Ã 1 = 20
(What is the full form of OTDR?)
- a) Optical Time Data Recorder
- b) Optical Time Domain Reflectometer
- c) Optical Test Digital Receiver
- d) Optical Transmission Distance Recorder
Answer (click to explore)
Correct: b) Optical Time Domain Reflectometer
(What is usually shown on the horizontal axis of an OTDR display?)
- a) āϞāϏ (Loss)
- b) āĻĻā§āϰāϤā§āĻŦ (Distance)
- c) āĻā§āϞā§āĻā§āĻ (Voltage)
- d) āϤāĻžāĻĒāĻŽāĻžāϤā§āϰāĻž (Temperature)
Answer (click to explore)
Correct: b) āĻĻā§āϰāϤā§āĻŦ (Distance)
(What is usually shown on the vertical axis of an OTDR display?)
- a) āϞāϏ/āĻĒāĻžāĻāϝāĻŧāĻžāϰ āϞā§āĻā§āϞ (Loss/Power level)
- b) āϏāĻŽāϝāĻŧ (Time)
- c) āĻā§āϰ āĻŦā§āϝāĻžāϏ (Core diameter)
- d) āϤāĻžāĻĒāĻŽāĻžāϤā§āϰāĻž (Temperature)
Answer (click to explore)
Correct: a) āϞāϏ/āĻĒāĻžāĻāϝāĻŧāĻžāϰ āϞā§āĻā§āϞ (Loss/Power level)
(What is the main use of a Visual Fault Locator (VFL)?)
- a) āĻā§āĻŦāϞ āϰāĻ āĻā§āĻ āĻāϰāĻž (Check cable colour)
- b) āĻāĻžāĻāĻž/āĻā§āώāϤāĻŋāĻā§āϰāϏā§āϤ āĻĒāϝāĻŧā§āύā§āĻ āĻĻā§āĻļā§āϝāĻŽāĻžāύ āĻāϰāĻž (Visually locate breaks/faults)
- c) āĻā§āĻŦāϞā§āϰ āĻāĻāύ āĻŽāĻžāĻĒāĻž (Measure cable weight)
- d) āϤāĻžāĻĒāĻŽāĻžāϤā§āϰāĻž āĻŽāĻžāĻĒāĻž (Measure temperature)
Answer (click to explore)
Correct: b) āĻāĻžāĻāĻž/āĻā§āώāϤāĻŋāĻā§āϰāϏā§āϤ āĻĒāϝāĻŧā§āύā§āĻ āĻĻā§āĻļā§āϝāĻŽāĻžāύ āĻāϰāĻž (Visually locate breaks/faults)
(Which instrument is used to inspect dust/dirt on connector end faces?)
- a) āĻāĻŋāĻā§āϝāĻŧāĻžāϞ āĻĢāϞā§āĻ āϞā§āĻā§āĻāϰ (VFL)
- b) āĻāύāϏā§āĻĒā§āĻāĻļāύ āĻŽāĻžāĻāĻā§āϰā§āϏā§āĻā§āĻĒ (Inspection microscope)
- c) āĻĒāĻžāĻāϝāĻŧāĻžāϰ āĻŽāĻŋāĻāĻžāϰ (Power meter)
- d) āĻŽāĻžāϞā§āĻāĻŋāĻŽāĻŋāĻāĻžāϰ (Multimeter)
Answer (click to explore)
Correct: b) āĻāύāϏā§āĻĒā§āĻāĻļāύ āĻŽāĻžāĻāĻā§āϰā§āϏā§āĻā§āĻĒ (Inspection microscope)
(Which is a quick method to check fiber continuity?)
- a) VFL āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻž (Using VFL)
- b) āĻā§āĻŦāϞ āĻā§āĻā§ āĻĻā§āĻāĻž (Cutting cable)
- c) āϤāĻžāĻĒāĻŽāĻžāϤā§āϰāĻž āĻŽāĻžāĻĒāĻž (Measuring temperature)
- d) āĻļā§āϧā§āĻŽāĻžāϤā§āϰ āĻā§āĻā§ āĻĻā§āĻāĻž (Only looking by naked eye)
Answer (click to explore)
Correct: a) VFL āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻž (Using VFL)
(What is the main purpose of an insertion loss test?)
- a) āĻā§āĻŦāϞā§āϰ āĻĻā§āϰā§āĻā§āϝ āĻŽāĻžāĻĒāĻž (To measure cable length)
- b) āĻāĻžāύā§āĻā§āĻāϰ/āϞāĻŋāĻāĻ āĻĻāĻŋāϝāĻŧā§ āĻāϞā§āϰ āĻā§āώāϝāĻŧ āĻŽāĻžāĻĒāĻž (To measure light loss through connector/link)
- c) āϤāĻžāĻĒāĻŽāĻžāϤā§āϰāĻž āĻŽāĻžāĻĒāĻž (To measure temperature)
- d) āĻĄā§āϰāĻžāĻŽā§āϰ āĻāĻāύ āĻŽāĻžāĻĒāĻž (To measure drum weight)
Answer (click to explore)
Correct: b) āĻāĻžāύā§āĻā§āĻāϰ/āϞāĻŋāĻāĻ āĻĻāĻŋāϝāĻŧā§ āĻāϞā§āϰ āĻā§āώāϝāĻŧ āĻŽāĻžāĻĒāĻž (To measure light loss through connector/link)
(What is measured using an optical power meter?)
- a) āϤāĻžāĻĒāĻŽāĻžāϤā§āϰāĻž (Temperature)
- b) āĻ āĻĒāĻāĻŋāĻā§āϝāĻžāϞ āĻĒāĻžāĻāϝāĻŧāĻžāϰ āϞā§āĻā§āϞ (Optical power level)
- c) āĻā§āĻŦāϞā§āϰ āĻŦā§āϝāĻžāϏ (Cable diameter)
- d) āĻā§āĻŦāϞā§āϰ āĻāĻāύ (Cable weight)
Answer (click to explore)
Correct: b) āĻ āĻĒāĻāĻŋāĻā§āϝāĻžāϞ āĻĒāĻžāĻāϝāĻŧāĻžāϰ āϞā§āĻā§āϞ (Optical power level)
(What does a sudden large drop in an OTDR trace indicate?)
- a) āĻā§āύ⧠āĻĒāϰāĻŋāĻŦāϰā§āϤāύ āύāϝāĻŧ (No change)
- b) āĻŦāĻĄāĻŧ āĻĢāĻžāĻāĻŦāĻžāϰ āĻŦā§āϰā§āĻ āĻŦāĻž āĻĢāĻžāĻāĻŦāĻžāϰ āĻļā§āώ (Major fiber break or fiber end)
- c) āĻā§āĻŦāϞ āĻŦā§āϝāĻžāϏ āĻĒāϰāĻŋāĻŦāϰā§āϤāύ (Change in cable diameter)
- d) āĻā§āĻŦāϞ āϰāĻ āĻĒāϰāĻŋāĻŦāϰā§āϤāύ (Change in cable colour)
Answer (click to explore)
Correct: b) āĻŦāĻĄāĻŧ āĻĢāĻžāĻāĻŦāĻžāϰ āĻŦā§āϰā§āĻ āĻŦāĻž āĻĢāĻžāĻāĻŦāĻžāϰ āĻļā§āώ (Major fiber break or fiber end)
(What is commonly used for connector cleaning?)
- a) āĻāĻžāĻĒāĻĄāĻŧā§āϰ āĻā§āĻāϰāĻž āĻ āĻĒāĻžāύāĻŋ (Cloth and water)
- b) āϞāĻŋāύā§āĻ-āĻĢā§āϰāĻŋ āĻāĻŋāϏā§āϝ⧠āĻ āĻāĻāϏā§āĻĒā§āϰā§āĻĒāĻžāĻāϞ āĻ ā§āϝāĻžāϞāĻā§āĻšāϞ (Lint-free tissue and isopropyl alcohol)
- c) āϤā§āϞ (Oil)
- d) āĻŦāĻžāϞāĻŋ (Sand)
Answer (click to explore)
Correct: b) āϞāĻŋāύā§āĻ-āĻĢā§āϰāĻŋ āĻāĻŋāϏā§āϝ⧠āĻ āĻāĻāϏā§āĻĒā§āϰā§āĻĒāĻžāĻāϞ āĻ ā§āϝāĻžāϞāĻā§āĻšāϞ (Lint-free tissue and isopropyl alcohol)
(What is the purpose of bare fiber testing?)
- a) āĻā§āĻŦāϞ āĻā§āϝāĻžāĻā§āĻā§āϰ āĻļāĻā§āϤāĻŋ āĻĻā§āĻāĻž (To see jacket strength)
- b) āĻĒā§āϰā§āĻā§āĻāĻļāύ āϏā§āϞāĻŋāĻā§āϰ āĻā§āĻŖāĻŽāĻžāύ āĻĻā§āĻāĻž (To check protection sleeve quality)
- c) āĻā§āϰ āĻ āĻā§āϞā§āϝāĻžāĻĄāĻŋāĻāϝāĻŧā§āϰ āĻŽāĻžāϧā§āϝāĻŽā§ āϏāĻŋāĻāύā§āϝāĻžāϞ āϝāĻžāĻā§āĻā§ āĻāĻŋāύāĻž āĻĻā§āĻāĻž (To see if signal passes through core and cladding)
- d) āĻā§āĻŦāϞ āϰāĻ āĻĻā§āĻāĻž (To see cable colour)
Answer (click to explore)
Correct: c) āĻā§āϰ āĻ āĻā§āϞā§āϝāĻžāĻĄāĻŋāĻāϝāĻŧā§āϰ āĻŽāĻžāϧā§āϝāĻŽā§ āϏāĻŋāĻāύā§āϝāĻžāϞ āϝāĻžāĻā§āĻā§ āĻāĻŋāύāĻž āĻĻā§āĻāĻž (To see if signal passes through core and cladding)
(What is measured in a return loss test?)
- a) āϏāĻžāĻŽāύā§āϰ āĻĻāĻŋāĻā§ āϝāĻžāĻāϝāĻŧāĻž āĻĒāĻžāĻāϝāĻŧāĻžāϰ (Forward power)
- b) āĻĢāĻŋāϰ⧠āĻāϏāĻž āĻĒā§āϰāϤāĻŋāĻĢāϞāĻŋāϤ āĻĒāĻžāĻāϝāĻŧāĻžāϰ (Reflected power coming back)
- c) āĻā§āĻŦāϞā§āϰ āĻāĻāύ (Cable weight)
- d) āϤāĻžāĻĒāĻŽāĻžāϤā§āϰāĻž (Temperature)
Answer (click to explore)
Correct: b) āĻĢāĻŋāϰ⧠āĻāϏāĻž āĻĒā§āϰāϤāĻŋāĻĢāϞāĻŋāϤ āĻĒāĻžāĻāϝāĻŧāĻžāϰ (Reflected power coming back)
(Which task should be done during test preparation?)
- a) āϏāĻŦ āĻāĻžāύā§āĻā§āĻāϰ āύāĻž āĻā§āϞ⧠āϰāĻžāĻāĻž (Not touching any connector)
- b) āĻāĻžāύā§āĻā§āĻāϰ āĻ āĻĢāĻžāĻāĻŦāĻžāϰ āĻĒā§āϰāĻžāύā§āϤ āĻĒāϰāĻŋāώā§āĻāĻžāϰ āĻāϰāĻž (Cleaning connectors and fiber ends)
- c) āϏāĻŦ āϝāύā§āϤā§āϰ āĻŦāύā§āϧ āϰāĻžāĻāĻž (Keeping all instruments off)
- d) āĻļā§āϧ⧠āĻā§āĻŦāϞ āĻāĻžāĻāĻž (Only cutting cable)
Answer (click to explore)
Correct: b) āĻāĻžāύā§āĻā§āĻāϰ āĻ āĻĢāĻžāĻāĻŦāĻžāϰ āĻĒā§āϰāĻžāύā§āϤ āĻĒāϰāĻŋāώā§āĻāĻžāϰ āĻāϰāĻž (Cleaning connectors and fiber ends)
(What is essential to confirm that the installed OFC system meets specifications?)
- a) āĻļā§āϧā§āĻŽāĻžāϤā§āϰ āĻāĻŋāĻā§āϝāĻŧāĻžāϞ āĻā§āĻ (Only visual check)
- b) āĻĒā§āϰā§āĻŖāĻžāĻā§āĻ āĻā§āϏā§āĻāĻŋāĻ āĻ āϰāĻŋāĻĒā§āϰā§āĻāĻŋāĻ (Complete testing and reporting)
- c) āĻļā§āϧ⧠āĻā§āĻŦāϞ āϞā§āĻāĻĨ āĻŽāĻžāĻĒāĻž (Only measuring cable length)
- d) āĻļā§āϧ⧠āĻĄā§āϰāĻžāĻŽ āύāĻŽā§āĻŦāϰ āϞā§āĻāĻž (Only writing drum number)
Answer (click to explore)
Correct: b) āĻĒā§āϰā§āĻŖāĻžāĻā§āĻ āĻā§āϏā§āĻāĻŋāĻ āĻ āϰāĻŋāĻĒā§āϰā§āĻāĻŋāĻ (Complete testing and reporting)
(What is meant by âdead zoneâ in OTDR usage?)
- a) āϝā§āĻāĻžāύ⧠āĻā§āύ⧠āĻā§āϰā§āϏ āύā§āĻ (Region with no trace)
- b) āϝā§āĻāĻžāύ⧠OTDR āĻĒāϰāĻŋāĻŽāĻžāĻĒ āϏāĻ āĻŋāĻ āύāϝāĻŧ (Region where OTDR measurement is not accurate)
- c) āϝā§āĻāĻžāύ⧠āĻĢāĻžāĻāĻŦāĻžāϰ āύā§āĻ (Region with no fiber)
- d) āĻā§āĻŦāϞ āĻĄā§āϰāĻžāĻŽā§āϰ āĻĢāĻžāĻāĻāĻž āĻ āĻāĻļ (Empty part of drum)
Answer (click to explore)
Correct: b) āϝā§āĻāĻžāύ⧠OTDR āĻĒāϰāĻŋāĻŽāĻžāĻĒ āϏāĻ āĻŋāĻ āύāϝāĻŧ (Region where OTDR measurement is not accurate)
(Which is a safety precaution while using an inspection microscope?)
- a) āϞā§āĻāĻžāϰ āĻāĻžāϞ⧠āϰā§āĻā§ āϏāϰāĻžāϏāϰāĻŋ āĻĻā§āĻāĻž (Look directly while laser is ON)
- b) āύāĻŋāĻļā§āĻāĻŋāϤ āĻšāĻāϝāĻŧāĻž āϝ⧠āĻā§āύ⧠āϞāĻžāĻāĻ āϞā§āĻāĻžāϰ āϝā§āĻā§āϤ āύā§āĻ (Ensure no live laser is connected)
- c) āĻā§āĻ āĻā§āĻŦ āĻāĻžāĻā§ āύāĻŋāϝāĻŧā§ āϝāĻžāĻāϝāĻŧāĻž (Keep eye too close)
- d) āĻā§āύ⧠āĻāϞ⧠āĻŦā§āϝāĻŦāĻšāĻžāϰ āύāĻž āĻāϰāĻž (Use no light at all)
Answer (click to explore)
Correct: b) āύāĻŋāĻļā§āĻāĻŋāϤ āĻšāĻāϝāĻŧāĻž āϝ⧠āĻā§āύ⧠āϞāĻžāĻāĻ āϞā§āĻāĻžāϰ āϝā§āĻā§āϤ āύā§āĻ (Ensure no live laser is connected)
(Which information is usually NOT included in a test report?)
- a) āϤāĻžāϰāĻŋāĻ āĻ āϏāĻŽāϝāĻŧ (Date and time)
- b) āĻā§āϏā§āĻ āĻŦā§āϝāĻŦāĻšā§āϤ āϝāύā§āϤā§āϰā§āϰ āĻŦāĻŋāĻŦāϰāĻŖ (Instrument details)
- c) āĻā§āĻāύāĻŋāĻļāĻŋāϝāĻŧāĻžāύā§āϰ āύāĻžāĻŽ (Technicianâs name)
- d) āĻā§āĻāύāĻŋāĻļāĻŋāϝāĻŧāĻžāύā§āϰ āĻŦā§āϝāĻā§āϤāĻŋāĻāϤ āĻŦā§āϤāύ (Technicianâs personal salary)
Answer (click to explore)
Correct: d) āĻā§āĻāύāĻŋāĻļāĻŋāϝāĻŧāĻžāύā§āϰ āĻŦā§āϝāĻā§āϤāĻŋāĻāϤ āĻŦā§āϤāύ (Technicianâs personal salary)
(What problem may occur if visual connector inspection is not done?)
- a) āϏāĻŦāϏāĻŽāϝāĻŧ āϞāϏ āĻāĻŽā§ āϝāĻžāĻŦā§ (Loss will always decrease)
- b) āĻŽāϝāĻŧāϞāĻž/āϏā§āĻā§āϰāĻžāĻā§āϰ āĻāύā§āϝ āϞāϏ āĻ āϰāĻŋāĻāĻžāϰā§āύ āϞāϏ āĻāĻžāϰāĻžāĻĒ āĻšāϤ⧠āĻĒāĻžāϰ⧠(Dirt/scratches can worsen loss and return loss)
- c) āĻā§āĻŦāϞ āĻā§āĻ āĻšāϝāĻŧā§ āϝāĻžāĻŦā§ (Cable will become shorter)
- d) āĻĄā§āϰāĻžāĻŽā§āϰ āĻāĻāύ āĻŦāĻĻāϞāĻžāĻŦā§ (Drum weight will change)
Answer (click to explore)
Correct: b) āĻŽāϝāĻŧāϞāĻž/āϏā§āĻā§āϰāĻžāĻā§āϰ āĻāύā§āϝ āϞāϏ āĻ āϰāĻŋāĻāĻžāϰā§āύ āϞāϏ āĻāĻžāϰāĻžāĻĒ āĻšāϤ⧠āĻĒāĻžāϰ⧠(Dirt/scratches can worsen loss and return loss)
(Generally, when optical return loss is higher, how is the link quality?)
- a) āĻāĻžāϰāĻžāĻĒ (Worse)
- b) āĻāĻžāϞ⧠(Better)
- c) āĻā§āύ⧠āĻĒā§āϰāĻāĻžāĻŦ āύā§āĻ (No effect)
- d) āϏāĻŦāϏāĻŽāϝāĻŧ āĻŦā§āϝāϰā§āĻĨ (Always failed)
Answer (click to explore)
Correct: b) āĻāĻžāϞ⧠(Better)
(What is usually the next step after OFC testing?)
- a) āĻā§āϏā§āĻ āĻĄā§āĻāĻž āĻĄāĻā§āĻŽā§āύā§āĻ āĻ āϏāĻāϰāĻā§āώāĻŖ āĻāϰāĻž (Document and store test data)
- b) āϏāĻŦ āĻā§āĻŦāϞ āĻā§āĻā§ āĻĢā§āϞāĻž (Cut all cables)
- c) āĻĄā§āϰāĻžāĻŽ āĻĢā§āϞ⧠āĻĻā§āĻāϝāĻŧāĻž (Throw away drum)
- d) āύāϤā§āύ āĻāϰ⧠āϰā§āĻ āĻĒā§āϞā§āϝāĻžāύ āĻāϰāĻž (Plan route again unnecessarily)
Answer (click to explore)
Correct: a) āĻā§āϏā§āĻ āĻĄā§āĻāĻž āĻĄāĻā§āĻŽā§āύā§āĻ āĻ āϏāĻāϰāĻā§āώāĻŖ āĻāϰāĻž (Document and store test data)
Unit 5: Health & Safety Measures and Networking â Multiple Choice Questions (MCQs) â 20 Ã 1 = 20
(What is the full form of PPE?)
- a) Personal Power Equipment
- b) Personal Protective Equipment
- c) Professional Protection Entity
- d) Public Protective Element
Answer (click to explore)
Correct: b) Personal Protective Equipment
(Which PPE must be worn at an OFC installation site?)
- a) āϏā§āϝāĻžāύā§āĻĄā§āϞ (Sandals)
- b) āϏā§āĻĢāĻāĻŋ āĻšā§āϞāĻŽā§āĻ (Safety helmet)
- c) āϏāĻžāϧāĻžāϰāĻŖ āĻā§āϝāĻžāĻĒ (Normal cap)
- d) āĻāĻžāϞāĻŋ āĻĒāĻž (Barefoot)
Answer (click to explore)
Correct: b) āϏā§āĻĢāĻāĻŋ āĻšā§āϞāĻŽā§āĻ (Safety helmet)
(Which PPE should be used to protect eyes from laser light?)
- a) āϏāĻžāϧāĻžāϰāĻŖ āĻāĻļāĻŽāĻž (Normal spectacles)
- b) āϏā§āĻĢāĻāĻŋ āĻāĻāϞāϏ/āϏā§āĻĢāĻāĻŋ āĻā§āϞāĻžāϏ (Safety goggles/glasses)
- c) āĻŽāĻžāϏā§āĻ (Mask)
- d) āĻāϝāĻŧāĻžāϰāĻĒā§āϞāĻžāĻ (Earplugs)
Answer (click to explore)
Correct: b) āϏā§āĻĢāĻāĻŋ āĻāĻāϞāϏ/āϏā§āĻĢāĻāĻŋ āĻā§āϞāĻžāϏ (Safety goggles/glasses)
(How should small cut pieces of fiber be managed?)
- a) āĻŽāĻžāĻāĻŋāϤ⧠āĻĢā§āϞ⧠āϰāĻžāĻāĻž (Leave on floor)
- b) āύāĻŋāϰā§āĻĻāĻŋāώā§āĻ āĻāύā§āĻā§āĻāύāĻžāϰ⧠āϏāĻāĻā§āϰāĻš āĻ āϏāĻ āĻŋāĻāĻāĻžāĻŦā§ āĻĄāĻŋāϏāĻĒā§āĻ āĻāϰāĻž (Collect in container and dispose properly)
- c) āĻšāĻžāϤ⧠āĻā§āĻĒā§ āĻāĻžāĻāĻž (Crush by hand)
- d) āĻĒāĻā§āĻā§ āϰāĻžāĻāĻž (Keep in pocket)
Answer (click to explore)
Correct: b) āύāĻŋāϰā§āĻĻāĻŋāώā§āĻ āĻāύā§āĻā§āĻāύāĻžāϰ⧠āϏāĻāĻā§āϰāĻš āĻ āϏāĻ āĻŋāĻāĻāĻžāĻŦā§ āĻĄāĻŋāϏāĻĒā§āĻ āĻāϰāĻž (Collect in container and dispose properly)
(Which is safe behaviour when using a ladder?)
- a) āĻā§āĻāĻž/āĻĒāĻŋāĻā§āĻāĻŋāϞ āĻāĻžāϝāĻŧāĻāĻžāϝāĻŧ āϞā§āϝāĻžāĻĄāĻžāϰ āĻŦāϏāĻžāύ⧠(Place ladder on wet/slippery surface)
- b) āĻĻā§āĻāĻāύ āĻāĻāϏāĻžāĻĨā§ āϞā§āϝāĻžāĻĄāĻžāϰ⧠āĻāĻ āĻž (Two people climbing together)
- c) āϏāĻŽāϤāϞ āĻ āĻļāĻā§āϤ āĻŽāĻžāĻāĻŋāϤ⧠āϞā§āϝāĻžāĻĄāĻžāϰ āĻŦāϏāĻžāύ⧠(Place ladder on firm, level ground)
- d) āϞā§āϝāĻžāĻĄāĻžāϰāĻā§ āĻāĻ āĻĒāĻžāϝāĻŧā§ āĻāϰ āĻāϰāĻž (Support ladder on one leg only)
Answer (click to explore)
Correct: c) āϏāĻŽāϤāϞ āĻ āĻļāĻā§āϤ āĻŽāĻžāĻāĻŋāϤ⧠āϞā§āϝāĻžāĻĄāĻžāϰ āĻŦāϏāĻžāύ⧠(Place ladder on firm, level ground)
(What is essential while handling chemicals like jelly, cleaners etc.?)
- a) āĻā§āύ⧠āĻā§āϞāĻžāĻāϏ āύāĻž āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻž (Use no gloves)
- b) āϰāĻžāϏāĻžāϝāĻŧāύāĻŋāĻ āϏā§āĻĢāĻāĻŋ āύāĻŋāϰā§āĻĻā§āĻļāĻŋāĻāĻž āĻ āύā§āϏāϰāĻŖ āĻāϰāĻž (Follow chemical safety guidelines)
- c) āĻā§āĻā§āϰ āĻāĻžāĻā§ āύāĻŋāϝāĻŧā§ āĻāύā§āϧ āύā§āϝāĻŧāĻž (Smell closely near eyes)
- d) āĻāĻžāĻŦāĻžāϰā§āϰ āĻĒāĻžāĻļā§ āϰāĻžāĻāĻž (Keep near food)
Answer (click to explore)
Correct: b) āϰāĻžāϏāĻžāϝāĻŧāύāĻŋāĻ āϏā§āĻĢāĻāĻŋ āύāĻŋāϰā§āĻĻā§āĻļāĻŋāĻāĻž āĻ āύā§āϏāϰāĻŖ āĻāϰāĻž (Follow chemical safety guidelines)
(What is a risk while working in an OFC trench?)
- a) āĻĒāϰā§āϝāĻžāĻĒā§āϤ āĻāϞ⧠(Adequate light)
- b) āĻā§āϝāĻžāϏ āĻāĻŽā§ āĻĨāĻžāĻāĻž āĻŦāĻž āϧāϏ (Gas accumulation or collapse)
- c) āϏāĻŽāϤāϞ āĻāĻŽāĻŋ (Flat surface)
- d) āϏā§āĻĢāĻāĻŋ āĻāύ āĻĨāĻžāĻāĻž (Presence of safety cones)
Answer (click to explore)
Correct: b) āĻā§āϝāĻžāϏ āĻāĻŽā§ āĻĨāĻžāĻāĻž āĻŦāĻž āϧāϏ (Gas accumulation or collapse)
(In an emergency like electric shock, what should be done first?)
- a) āϏāϰāĻžāϏāϰāĻŋ āĻŦā§āϝāĻā§āϤāĻŋāĻā§ āĻā§āύ⧠āϧāϰāĻž (Pull the person directly)
- b) āĻĒāĻžāĻāϝāĻŧāĻžāϰ āϏā§āϰā§āϏ āĻŦāύā§āϧ āĻāϰāĻž (Switch off the power source)
- c) āĻāĻŦāĻŋ āϤā§āϞāĻž (Take photos)
- d) āĻāĻžāĻ āĻāĻžāϞāĻŋāϝāĻŧā§ āϝāĻžāĻāϝāĻŧāĻž (Continue work)
Answer (click to explore)
Correct: b) āĻĒāĻžāĻāϝāĻŧāĻžāϰ āϏā§āϰā§āϏ āĻŦāύā§āϧ āĻāϰāĻž (Switch off the power source)
(Which statement about fire extinguishers is correct?)
- a) āϏāĻŦ āϧāϰāύā§āϰ āĻāĻā§āύ⧠āĻāĻāĻ āĻāĻā§āϏāĻāĻŋāύāĻā§āĻāĻļāĻžāϰ (Same extinguisher for all fires)
- b) āϏāĻšāĻā§ āĻĒā§āĻāĻāĻžāύ⧠āϝāĻžāϝāĻŧ āĻāĻŽāύ āϏā§āĻĨāĻžāύ⧠āϰāĻžāĻāĻž āĻāĻāĻŋāϤ (Should be kept easily accessible)
- c) āĻāĻāύāĻ āĻā§āϰā§āύāĻŋāĻ āĻĻāϰāĻāĻžāϰ āύā§āĻ (No training needed ever)
- d) āϏāĻŦāϏāĻŽāϝāĻŧ āϞā§āĻāĻŋāϝāĻŧā§ āϰāĻžāĻāĻž āĻāĻāĻŋāϤ (Should always be hidden)
Answer (click to explore)
Correct: b) āϏāĻšāĻā§ āĻĒā§āĻāĻāĻžāύ⧠āϝāĻžāϝāĻŧ āĻāĻŽāύ āϏā§āĻĨāĻžāύ⧠āϰāĻžāĻāĻž āĻāĻāĻŋāϤ (Should be kept easily accessible)
(Why is documentation important?)
- a) āĻļā§āϧ⧠āĻāĻžāĻāĻ āύāώā§āĻ āĻāϰāĻžāϰ āĻāύā§āϝ (Only to waste paper)
- b) āĻāĻžāĻā§āϰ āϏāĻŦ āϤāĻĨā§āϝ āĻ āĻā§āϏā§āĻ āĻĢāϞāĻžāĻĢāϞ āĻāĻŦāĻŋāώā§āϝāϤ⧠āϰā§āĻĢāĻžāϰā§āύā§āϏā§āϰ āĻāύā§āϝ āϰāĻžāĻāĻž (To keep work details and test results for future reference)
- c) āĻŽāĻžāύā§āώā§āϰ āύāĻžāĻŽ āϞāĻŋāĻā§ āϰāĻžāĻāĻž (Only to write peopleâs names)
- d) āĻĄā§āϰāĻžāĻŽā§āϰ āϰāĻ āύā§āĻ āĻāϰāĻžāϰ āĻāύā§āϝ (Only to note drum colour)
Answer (click to explore)
Correct: b) āĻāĻžāĻā§āϰ āϏāĻŦ āϤāĻĨā§āϝ āĻ āĻā§āϏā§āĻ āĻĢāϞāĻžāĻĢāϞ āĻāĻŦāĻŋāώā§āϝāϤ⧠āϰā§āĻĢāĻžāϰā§āύā§āϏā§āϰ āĻāύā§āϝ āϰāĻžāĻāĻž (To keep work details and test results for future reference)
(What is meant by a ânetworkâ?)
- a) āĻāĻāĻ āĻāĻŽā§āĻĒāĻŋāĻāĻāĻžāϰ (A single computer)
- b) āĻāĻāĻžāϧāĻŋāĻ āĻĄāĻŋāĻāĻžāĻāϏā§āϰ āĻŽāϧā§āϝ⧠āϏāĻāϝā§āĻ āĻŦā§āϝāĻŦāϏā§āĻĨāĻž (A system connecting multiple devices)
- c) āĻļā§āϧā§āĻŽāĻžāϤā§āϰ āĻŽā§āĻŦāĻžāĻāϞ āĻĢā§āύ (Only mobile phones)
- d) āĻļā§āϧ⧠āĻāύā§āĻāĻžāϰāύā§āĻ āĻā§āϝāĻžāĻŦāϞ (Only internet cable)
Answer (click to explore)
Correct: b) āĻāĻāĻžāϧāĻŋāĻ āĻĄāĻŋāĻāĻžāĻāϏā§āϰ āĻŽāϧā§āϝ⧠āϏāĻāϝā§āĻ āĻŦā§āϝāĻŦāϏā§āĻĨāĻž (A system connecting multiple devices)
(What is a network used in a small area inside the same building called?)
- a) WAN
- b) LAN
- c) MAN
- d) PAN-āύāĻž (None of these)
Answer (click to explore)
Correct: b) LAN
(Which device is commonly used to connect devices in a network?)
- a) āĻĒā§āϰāĻŋāύā§āĻāĻžāϰ (Printer)
- b) āϏā§āĻāĻ (Switch)
- c) āϏā§āĻā§āϝāĻžāύāĻžāϰ (Scanner)
- d) āĻā§āĻŦā§āϰā§āĻĄ (Keyboard)
Answer (click to explore)
Correct: b) āϏā§āĻāĻ (Switch)
(Which device is used to connect two different networks?)
- a) āĻšāĻžāĻŦ (Hub)
- b) āϰāĻžāĻāĻāĻžāϰ (Router)
- c) āĻŽāύāĻŋāĻāϰ (Monitor)
- d) āĻŽāĻžāĻāϏ (Mouse)
Answer (click to explore)
Correct: b) āϰāĻžāĻāĻāĻžāϰ (Router)
(What should be done for safety while pulling network cables?)
- a) āϞā§āĻāĻāύāĻā§ āϏāϤāϰā§āĻ āύāĻž āĻāϰ⧠āĻā§āĻŦāϞ āĻāĻžāύāĻž (Pull cable without warning people)
- b) āϏā§āĻĢāĻāĻŋ āĻāύ/āĻā§āĻĒ āĻĻāĻŋāϝāĻŧā§ āĻāϞāĻžāĻāĻž āĻŽāĻžāϰā§āĻ āĻāϰāĻž (Mark area with safety cones/tape)
- c) āϰāĻžāϏā§āϤāĻžāϰ āĻŽāĻžāĻāĻāĻžāύ⧠āĻā§āĻŦāϞ āĻĢā§āϞ⧠āϰāĻžāĻāĻž (Lay cable in middle of road)
- d) āĻ āύā§āϧāĻāĻžāϰ⧠āĻāĻžāĻ āĻāϰāĻž (Work in dark)
Answer (click to explore)
Correct: b) āϏā§āĻĢāĻāĻŋ āĻāύ/āĻā§āĻĒ āĻĻāĻŋāϝāĻŧā§ āĻāϞāĻžāĻāĻž āĻŽāĻžāϰā§āĻ āĻāϰāĻž (Mark area with safety cones/tape)
(Which topology is commonly used in optical fiber networks?)
- a) āĻŦāĻžāϏ (Bus)
- b) āϰāĻŋāĻ (Ring)
- c) āϏā§āĻāĻžāϰ (Star)
- d) āĻŽā§āĻļ (Mesh)
Answer (click to explore)
Possible correct (syllabus-level): c) āϏā§āĻāĻžāϰ (Star) â basic school-level assumption
(What does âergonomicsâ mean at the workplace?)
- a) āĻļā§āϧā§āĻ āϝāύā§āϤā§āϰāĻĒāĻžāϤāĻŋāϰ āĻāϤāĻŋ (Only speed of machines)
- b) āĻŽāĻžāύā§āώā§āϰ āĻāϰāĻžāĻŽ āĻ āύāĻŋāϰāĻžāĻĒāϤā§āϤāĻž āĻ āύā§āϝāĻžāϝāĻŧā§ āĻāĻžāĻā§āϰ āĻĒāϰāĻŋāĻŦā§āĻļ āĻĄāĻŋāĻāĻžāĻāύ āĻāϰāĻž (Designing workplace for human comfort and safety)
- c) āĻļā§āϧ⧠āĻāĻžāĻāĻāĻĒāϤā§āϰā§āϰ āĻāĻžāĻ (Only paperwork)
- d) āĻļā§āϧā§āĻ āĻāύā§āĻāĻžāϰāύā§āĻ āϏā§āĻĒāĻŋāĻĄ (Only internet speed)
Answer (click to explore)
Correct: b) āĻŽāĻžāύā§āώā§āϰ āĻāϰāĻžāĻŽ āĻ āύāĻŋāϰāĻžāĻĒāϤā§āϤāĻž āĻ āύā§āϝāĻžāϝāĻŧā§ āĻāĻžāĻā§āϰ āĻĒāϰāĻŋāĻŦā§āĻļ āĻĄāĻŋāĻāĻžāĻāύ āĻāϰāĻž (Designing workplace for human comfort and safety)
(What is meant by âunderground safetyâ during OFC installation?)
- a) āĻļā§āϧ⧠āĻŽāĻžāĻāĻŋ āĻā§āĻā§ āĻĢā§āϞāĻž (Only digging soil)
- b) āĻŦāĻŋāĻĻā§āϝāĻŽāĻžāύ āĻĒāĻžāĻāĻĒāϞāĻžāĻāύ, āĻā§āĻŦāϞ, āĻā§āϝāĻžāϏ āϞāĻžāĻāύ āĻāϤā§āϝāĻžāĻĻāĻŋ āĻĨā§āĻā§ āύāĻŋāϰāĻžāĻĒāĻĻ āĻĻā§āϰāϤā§āĻŦ āĻŦāĻāĻžāϝāĻŧ āϰāĻžāĻāĻž (Maintaining safe distance from existing pipelines, cables, gas lines etc.)
- c) āĻļā§āϧ⧠āĻā§āĻŦāϞ āϞāĻŽā§āĻŦāĻž āĻāϰāĻž (Only lengthening cable)
- d) āĻā§āĻŦāϞ āϰāĻ āĻāϰāĻž (Painting cable)
Answer (click to explore)
Correct: b) āĻŦāĻŋāĻĻā§āϝāĻŽāĻžāύ āĻĒāĻžāĻāĻĒāϞāĻžāĻāύ, āĻā§āĻŦāϞ, āĻā§āϝāĻžāϏ āϞāĻžāĻāύ āĻāϤā§āϝāĻžāĻĻāĻŋ āĻĨā§āĻā§ āύāĻŋāϰāĻžāĻĒāĻĻ āĻĻā§āϰāϤā§āĻŦ āĻŦāĻāĻžāϝāĻŧ āϰāĻžāĻāĻž (Maintaining safe distance from existing utilities)
(What is the purpose of safety signs at the workplace?)
- a) āĻļā§āϧā§āĻ āĻĻā§āϝāĻŧāĻžāϞ āϏāĻžāĻāĻžāύ⧠(Only to decorate walls)
- b) āϏāĻŽā§āĻāĻžāĻŦā§āϝ āĻŦāĻŋāĻĒāĻĻ āĻ āύāĻŋāϝāĻŧāĻŽ āϏāĻŽā§āĻĒāϰā§āĻā§ āϏāϤāϰā§āĻ āĻāϰāĻž (To warn about possible hazards and rules)
- c) āĻāϰā§āĻŽā§āĻĻā§āϰ āύāĻžāĻŽ āĻĻā§āĻāĻžāύ⧠(Show workersâ names)
- d) āĻā§āĻŦāϞ āύāĻŽā§āĻŦāϰ āϞāĻŋāĻā§ āϰāĻžāĻāĻž (Write cable numbers)
Answer (click to explore)
Correct: b) āϏāĻŽā§āĻāĻžāĻŦā§āϝ āĻŦāĻŋāĻĒāĻĻ āĻ āύāĻŋāϝāĻŧāĻŽ āϏāĻŽā§āĻĒāϰā§āĻā§ āϏāϤāϰā§āĻ āĻāϰāĻž (To warn about possible hazards and rules)
(Which is a good practice for maintaining data security in a network?)
- a) āĻĒāĻžāϏāĻāϝāĻŧāĻžāϰā§āĻĄ āϏāĻŦāĻžāĻāĻā§ āĻŦāϞ⧠āĻĻā§āĻāϝāĻŧāĻž (Sharing password with everyone)
- b) āĻļāĻā§āϤāĻŋāĻļāĻžāϞ⧠āĻĒāĻžāϏāĻāϝāĻŧāĻžāϰā§āĻĄ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻ āύāĻŋāϝāĻŧāĻŽāĻŋāϤ āĻĒāϰāĻŋāĻŦāϰā§āϤāύ āĻāϰāĻž (Using strong passwords and changing regularly)
- c) āĻĒāĻžāϏāĻāϝāĻŧāĻžāϰā§āĻĄ āĻāĻžāĻāĻā§ āϞāĻŋāĻā§ āĻŽāύāĻŋāĻāϰ⧠āϞāĻžāĻāĻŋāϝāĻŧā§ āϰāĻžāĻāĻž (Writing password on paper and sticking to monitor)
- d) āĻā§āύ⧠āĻĒāĻžāϏāĻāϝāĻŧāĻžāϰā§āĻĄ āύāĻž āϰāĻžāĻāĻž (Keeping no password)
Answer (click to explore)
Correct: b) āĻļāĻā§āϤāĻŋāĻļāĻžāϞ⧠āĻĒāĻžāϏāĻāϝāĻŧāĻžāϰā§āĻĄ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻ āύāĻŋāϝāĻŧāĻŽāĻŋāϤ āĻĒāϰāĻŋāĻŦāϰā§āϤāύ āĻāϰāĻž (Using strong passwords and changing regularly)
MCQ SET 2
Unit 1: Fiber Optic Communication and Route Inspection â Multiple Choice Questions (MCQs) â 20 Ã 1 = 20
(Which wavelength bands are commonly used in telecom optical fiber?)
- a) 50 Hz, 60 Hz
- b) 400 nm, 500 nm
- c) 850 nm, 1310 nm, 1550 nm
- d) 5 m, 10 m
(What is the outermost protective layer of an optical fiber called?)
- a) āĻā§āϰ (Core)
- b) āĻā§āϞā§āϝāĻžāĻĄāĻŋāĻ (Cladding)
- c) āĻā§āϝāĻžāĻā§āĻ/āĻļā§āĻĨ (Jacket/Sheath)
- d) āĻŦāĻžāĻĢāĻžāϰ āĻāĻŋāĻāĻŦ (Buffer tube)
(What is the loss due to very small bends in the fiber called?)
- a) āĻā§āϰā§āĻŽā§āϝāĻžāĻāĻŋāĻ āĻĄāĻŋāϏāĻĒāĻžāϰāĻļāύ (Chromatic dispersion)
- b) āĻŽā§āϝāĻžāĻā§āϰā§-āĻŦā§āύā§āĻĄ āϞāϏ (Macro-bend loss)
- c) āĻŽāĻžāĻāĻā§āϰā§-āĻŦā§āύā§āĻĄ āϞāϏ (Micro-bend loss)
- d) āĻāĻžāĻĒāϞāĻŋāĻ āϞāϏ (Coupling loss)
(Which of the following does NOT affect attenuation in a fiber?)
- a) āĻĢāĻžāĻāĻŦāĻžāϰā§āϰ āĻĻā§āϰā§āĻā§āϝ (Length of fiber)
- b) āĻ āĻĒāĻžāϰā§āĻāĻŋāĻ āϤāϰāĻā§āĻāĻĻā§āϰā§āĻā§āϝ (Operating wavelength)
- c) āϤāĻžāĻĒāĻŽāĻžāϤā§āϰāĻž (Temperature)
- d) āĻā§āĻŦāϞā§āϰ āĻŦāĻžāĻāϰā§āϰ āϰāĻ (Outer colour of cable)
(What is an important advantage of optical fiber over copper cable?)
- a) āĻāϞā§āĻā§āĻā§āϰā§āĻŽā§āϝāĻžāĻāύā§āĻāĻŋāĻ āύāϝāĻŧā§āĻā§ āĻŦā§āĻļāĻŋ āĻĒā§āϰāĻāĻžāĻŦāĻŋāϤ āĻšāϝāĻŧ (More affected by electromagnetic noise)
- b) āĻāϞā§āĻā§āĻā§āϰā§āĻŽā§āϝāĻžāĻāύā§āĻāĻŋāĻ āĻāύā§āĻāĻžāϰāĻĢāĻŋāϝāĻŧāĻžāϰā§āύā§āϏ⧠āĻĒā§āϰāĻāĻžāĻŦāĻŋāϤ āĻšāϝāĻŧ āύāĻž āĻĒā§āϰāĻžāϝāĻŧ (Almost immune to EMI)
- c) āĻā§āϞā§āĻā§āĻ āĻŦāĻšāύ āĻāϰāϤ⧠āĻĒāĻžāϰ⧠(Can carry high voltage)
- d) āĻā§āĻŦ āĻāĻžāϰ⧠āĻšāϝāĻŧ (Very heavy)
(In an OFC system, what is meant by a âlinkâ?)
- a) āĻļā§āϧā§āĻ āĻā§āϰāĻžāύā§āϏāĻŽāĻŋāĻāĻžāϰ (Only the transmitter)
- b) āĻļā§āϧā§āĻ āϰāĻŋāϏāĻŋāĻāĻžāϰ (Only the receiver)
- c) āĻā§āϰāĻžāύā§āϏāĻŽāĻŋāĻāĻžāϰ āĻĨā§āĻā§ āϰāĻŋāϏāĻŋāĻāĻžāϰ āĻĒāϰā§āϝāύā§āϤ āϏāĻŽā§āĻĒā§āϰā§āĻŖ āĻĢāĻžāĻāĻŦāĻžāϰ āĻĒāĻĨ (Complete fiber path from transmitter to receiver)
- d) āĻļā§āϧā§āĻŽāĻžāϤā§āϰ āĻĒāĻžāĻāϝāĻŧāĻžāϰ āϏāĻžāĻĒā§āϞāĻžāĻ (Only the power supply)
(Which type of fiber is generally used in long-distance telecom links?)
- a) āϏāĻŋāĻā§āĻā§āϞ-āĻŽā§āĻĄ āĻĢāĻžāĻāĻŦāĻžāϰ (Single-mode fiber)
- b) āĻŽāĻžāϞā§āĻāĻŋ-āĻŽā§āĻĄ āĻĢāĻžāĻāĻŦāĻžāϰ (Multi-mode fiber)
- c) āĻĒā§āϞāĻžāϏā§āĻāĻŋāĻ āĻĢāĻžāĻāĻŦāĻžāϰ (Plastic fiber)
- d) āĻāĻĒāĻžāϰ āĻĢāĻžāĻāĻŦāĻžāϰ (Copper fiber)
(If the refractive index difference between core and cladding is larger, how is the numerical aperture usually?)
- a) āĻāĻŽ (Smaller)
- b) āĻŦā§āĻļāĻŋ (Larger)
- c) āĻ āĻĒāϰāĻŋāĻŦāϰā§āϤāĻŋāϤ (Same)
- d) āĻļā§āύā§āϝ (Zero)
(What does âdispersionâ mean in fiber optic systems?)
- a) āĻĒāĻžāĻāϝāĻŧāĻžāϰ āĻāĻŽā§ āϝāĻžāĻāϝāĻŧāĻž (Drop in power)
- b) āϏāĻŋāĻāύā§āϝāĻžāϞā§āϰ āϏā§āĻĒāĻŋāĻĄ āĻŦāĻžāĻĄāĻŧāĻž (Increase in signal speed)
- c) āĻĒāĻžāϞāϏ āĻĒā§āϰāĻļāϏā§āϤ āĻšāϝāĻŧā§ āϝāĻžāĻāϝāĻŧāĻž (Spreading of optical pulse)
- d) āĻā§āĻŦāϞā§āϰ āĻāĻāύ āĻŦāĻžāĻĄāĻŧāĻž (Increase in cable weight)
(Dispersion due to different wavelengths travelling at different speeds is called what?)
- a) āĻŽā§āĻĄāĻžāϞ āĻĄāĻŋāϏāĻĒāĻžāϰāĻļāύ (Modal dispersion)
- b) āĻā§āϰā§āĻŽā§āϝāĻžāĻāĻŋāĻ āĻĄāĻŋāϏāĻĒāĻžāϰāĻļāύ (Chromatic dispersion)
- c) āĻĒā§āϞāĻžāϰāĻžāĻāĻā§āĻļāύ āĻĄāĻŋāϏāĻĒāĻžāϰāĻļāύ (Polarization dispersion)
- d) āĻŦā§āύā§āĻĄ āĻĄāĻŋāϏāĻĒāĻžāϰāĻļāύ (Bend dispersion)
(During route inspection, what is meant by âRight-of-wayâ?)
- a) āĻā§āĻŦāϞ āĻā§āĻā§ āĻĢā§āϞāĻžāϰ āĻ āϧāĻŋāĻāĻžāϰ (Right to cut cables)
- b) āύāĻŋāϰā§āĻĻāĻŋāώā§āĻ āĻĒāĻĨ āĻĻāĻŋāϝāĻŧā§ āĻā§āĻŦāϞ āύāĻŋāϝāĻŧā§ āϝāĻžāĻāϝāĻŧāĻžāϰ āĻ āύā§āĻŽāϤāĻŋ (Permission to use a particular path for cable)
- c) āĻā§āĻŦāϞ āĻŦāĻŋāĻā§āϰāĻŋāϰ āĻ āϧāĻŋāĻāĻžāϰ (Right to sell cable)
- d) āĻŦāĻŋāĻĻā§āϝā§ā§ āϞāĻžāĻāύ āĻŽāĻžāϞāĻŋāĻāĻžāύāĻž (Ownership of power lines)
(What is the main purpose of placing route markers?)
- a) āϏāĻžāĻāĻžāύā§āϰ āĻāύā§āϝ (For decoration)
- b) āĻŽāĻžāĻāĻŋāϰ āύāĻŋāĻā§ āĻā§āĻŦāϞ āĻā§āĻĨāĻžāϝāĻŧ āĻā§āĻā§ āϤāĻž āĻāĻŋāĻšā§āύāĻŋāϤ āĻāϰāĻž (To indicate underground cable path)
- c) āϰāĻžāϏā§āϤāĻžāϰ āύāĻžāĻŽ āϞā§āĻāĻž (To write road names)
- d) āĻā§āĻŦāϞā§āϰ āϰāĻ āĻŦā§āĻāĻžāύ⧠(To show cable colour)
(How is the refractive index profile in a step-index fiber?)
- a) āĻā§āϰ āĻ āĻā§āϞā§āϝāĻžāĻĄāĻŋāĻāϝāĻŧā§ āĻāĻāĻ (Same in core and cladding)
- b) āĻā§āϰ⧠āϧā§āϰ⧠āϧā§āϰ⧠āĻāĻŽā§ (Gradually decreasing in core)
- c) āĻā§āϰ⧠āĻāĻ āĻŽāĻžāύ, āĻā§āϞā§āϝāĻžāĻĄāĻŋāĻāϝāĻŧā§ āĻšāĻ āĻžā§ āĻāĻŽ (Constant in core, sudden drop in cladding)
- d) āĻāϞā§āĻŽā§āϞā§āĻāĻžāĻŦā§ āĻĒāϰāĻŋāĻŦāϰā§āϤāĻŋāϤ (Randomly varying)
(Which of the following is considered an environmental risk during fiber route inspection?)
- a) āĻāĻžāĻ, āύāĻžāϞāĻž, āĻāϞāĻžāĻŦāĻĻā§āϧāϤāĻž (Trees, drains, water-logging)
- b) āĻā§āĻŦāϞ āϰāĻ (Cable colour)
- c) āĻĄā§āϰāĻžāĻŽā§āϰ āύāĻŽā§āĻŦāϰ (Drum number)
- d) āĻā§āϰ āϏāĻāĻā§āϝāĻž (Number of cores)
(What is a âservice loopâ in a fiber optic route plan?)
- a) āĻ āϤāĻŋāϰāĻŋāĻā§āϤ āĻŦā§āĻĻā§āϝā§āϤāĻŋāĻ āĻā§āĻŦāϞ (Extra electrical cable)
- b) āĻāĻŦāĻŋāώā§āϝ⧠āĻāĻžāĻā§āϰ āĻāύā§āϝ āϰāĻžāĻāĻž āĻ āϤāĻŋāϰāĻŋāĻā§āϤ āĻĢāĻžāĻāĻŦāĻžāϰ āĻĻā§āϰā§āĻā§āϝ (Extra length of fiber kept for future work)
- c) āĻĄā§āϰāĻžāĻŽā§āϰ āĻ āϤāĻŋāϰāĻŋāĻā§āϤ āĻāĻžāĻ (Extra wood of drum)
- d) āĻĒāĻžāĻāϝāĻŧāĻžāϰ āϏāĻžāĻĒā§āϞāĻžāĻ āϞā§āĻĒ (Power supply loop)
(In a fiber optic link, what does âbudgetâ usually refer to?)
- a) āĻĒā§āϰāĻāϞā§āĻĒā§āϰ āĻāĻžāĻāĻž (Project money)
- b) āĻā§āĻŦāϞ āĻā§āύāĻžāϰ āĻāϰāĻ (Cost of buying cable)
- c) āĻ āύā§āĻŽā§āĻĻāĻŋāϤ āϏāϰā§āĻŦā§āĻā§āĻ āϞāϏ (Allowed maximum loss)
- d) āĻļā§āϰāĻŽāĻŋāĻāĻĻā§āϰ āĻŽāĻā§āϰāĻŋ (Workersâ wages)
(Fiber optic routes are usually designed to avoid which type of places?)
- a) āĻĒāĻžāĻŦāϞāĻŋāĻ āĻāĻžāϰā§āĻĄā§āύ (Public gardens)
- b) āĻāĻā§āĻ āĻā§āϞā§āĻā§āĻ āĻŦāĻŋāĻĻā§āϝā§ā§ āϞāĻžāĻāύ āĻā§āϰāϏāĻŋāĻ (High-voltage power line crossings)
- c) āϰā§āϞāϞāĻžāĻāύ, āύāĻĻā§, āϏā§āϤ⧠āĻāϤā§āϝāĻžāĻĻāĻŋ (Railway tracks, rivers, bridges etc.)
- d) āϏāĻŽā§āĻĒā§āϰā§āĻŖ āĻā§āĻāĻāĻŋāĻĒā§āϰā§āĻŖ āĻāĻŦāĻ āĻ āύā§āĻŽāϤāĻŋ āĻāĻ āĻŋāύ āĻāϞāĻžāĻāĻž (Highly risky and permission-difficult zones)
(What happens in a full-duplex fiber link?)
- a) āĻāĻāĻĻāĻŋāĻā§āĻ āϝā§āĻāĻžāϝā§āĻ (Communication in one direction only)
- b) āĻĻā§āĻ āĻĻāĻŋāĻā§āĻ āĻāĻāϏāĻžāĻĨā§ āϝā§āĻāĻžāϝā§āĻ (Simultaneous communication in both directions)
- c) āĻā§āύ⧠āĻĄā§āĻāĻž āϝāĻžāϝāĻŧ āύāĻž (No data flows)
- d) āĻļā§āϧ⧠āĻāϝāĻŧā§āϏ āϝāĻžāϝāĻŧ (Only voice goes)
(What does a ârepeaterâ do in a fiber optic system?)
- a) āĻā§āĻŦāϞ āϰāĻ āĻĒāϰāĻŋāĻŦāϰā§āϤāύ āĻāϰ⧠(Changes cable colour)
- b) āϏāĻŋāĻāύā§āϝāĻžāϞāĻā§ āĻĒā§āύāϰāĻžāϝāĻŧ āĻļāĻā§āϤāĻŋāĻļāĻžāϞ⧠āĻāϰ⧠(Re-amplifies / regenerates the signal)
- c) āĻā§āĻŦāϞ āĻāĻžāĻā§ (Cuts the cable)
- d) āĻā§āϰā§āĻā§āĻ āĻā§āĻāĻĄāĻŧā§ (Digs the trench)
(Where is multimode fiber more commonly used?)
- a) āĻĻā§āϰā§āĻ āϏāĻŽā§āĻĻā§āϰāϤāϞ āĻā§āĻŦāϞ āϞāĻŋāĻā§āĻā§ (Very long submarine links)
- b) āĻĻā§āϰā§āĻ āĻāĻžāϤā§āϝāĻŧ āĻŦā§āϝāĻžāĻāĻŦā§āύ āύā§āĻāĻāϝāĻŧāĻžāϰā§āĻā§ (Long national backbone)
- c) āĻāĻŦāύā§āϰ āĻā§āϤāϰā§āϰ āϏā§āĻŦāϞā§āĻĒ āĻĻā§āϰāϤā§āĻŦā§āϰ āϞāĻŋāĻā§āĻā§ (Short-distance links inside buildings)
- d) āĻā§āύ⧠āĻāĻžāĻā§āĻ āύāĻž (Not used anywhere)
Unit 2: Splicing Tools and Process â Multiple Choice Questions (MCQs) â 20 Ã 1 = 20
(What is the process called where an electric arc is used to join two fibers?)
- a) āĻŽā§āĻāĻžāύāĻŋāĻā§āϝāĻžāϞ āϏā§āĻĒā§āϞāĻžāĻāϏ (Mechanical splice)
- b) āĻĢāĻŋāĻāĻļāύ āϏā§āĻĒā§āϞāĻžāĻāϏ (Fusion splice)
- c) āϏā§āĻā§āϰ⧠āĻāϝāĻŧā§āύā§āĻ (Screw joint)
- d) āϏā§āϞā§āĻĄāĻžāϰ āĻāϝāĻŧā§āύā§āĻ (Solder joint)
(For a good splice, how should the cleave angle of the fiber end ideally be?)
- a) āĻĒā§āϰāĻžāϝāĻŧ ā§Ļ°-āĻāϰ āĻāĻžāĻāĻžāĻāĻžāĻāĻŋ (Close to 0°)
- b) ā§Ēā§Ģ° (45°)
- c) ⧝ā§Ļ° (90°)
- d) āϝāϤ āĻŦāĻĄāĻŧ āϤāϤ āĻāĻžāϞ⧠(The larger the better)
(What is the first step before stripping the coating?)
- a) āĻĢāĻžāĻāĻŦāĻžāϰ āĻā§āĻā§ āĻĢā§āϞāĻž (Break the fiber)
- b) āϏāĻ āĻŋāĻ āϞā§āύā§āĻĨ āĻŽāĻžāϰā§āĻ āĻāϰāĻž (Mark required length)
- c) OTDR āĻāĻžāϞ⧠āĻāϰāĻž (Turn on OTDR)
- d) āĻĒā§āϰā§āĻā§āĻāĻļāύ āϏā§āϞāĻŋāĻ āĻāϰāĻŽ āĻāϰāĻž (Heat protection sleeve)
(What happens if fusion splicer electrodes are not cleaned in time?)
- a) āĻāĻŋāĻā§āĻ āĻšāϝāĻŧ āύāĻž (Nothing happens)
- b) āĻāϰā§āĻ āĻ āϏā§āĻĨāĻŋāϰ āĻšāĻŦā§ āĻ āϞāϏ āĻŦāĻžāĻĄāĻŧāĻŦā§ (Arc becomes unstable and loss increases)
- c) āĻĢāĻžāĻāĻŦāĻžāϰā§āϰ āϰāĻ āĻĒāϰāĻŋāĻŦāϰā§āϤāύ āĻšāϝāĻŧ (Fiber colour changes)
- d) āĻā§āĻŦāϞ āĻā§āϞā§āĻā§āĻ āĻāĻŽā§ āϝāĻžāϝāĻŧ (Cable voltage decreases)
(How is the protection sleeve usually fitted after fusion splice?)
- a) āĻ āĻžāύā§āĻĄāĻž āϰā§āĻā§ (Kept cold)
- b) āĻšāĻŋāĻ āĻļā§āϰāĻŋāĻāĻ āĻāĻā§āύ⧠āĻāϰāĻŽ āĻāϰ⧠(Heated in a heat shrink oven)
- c) āĻĒāĻžāύāĻŋāϤ⧠āĻĄā§āĻŦāĻŋāϝāĻŧā§ (Dipped in water)
- d) āĻšāĻžāϤ āĻĻāĻŋāϝāĻŧā§ āĻā§āύ⧠(Pulled by hand)
(Where is a splice closure used?)
- a) āĻā§āĻŦāϞ āĻĄā§āϰāĻžāĻŽā§āϰ āĻā§āϤāϰ⧠(Inside cable drum)
- b) āĻĢāĻžāĻāĻŦāĻžāϰ āĻāϝāĻŧā§āύā§āĻāĻā§ āĻāĻŦāĻšāĻžāĻāϝāĻŧāĻž āĻ āĻŽā§āĻāĻžāύāĻŋāĻā§āϝāĻžāϞ āĻā§āώāϤāĻŋ āĻĨā§āĻā§ āϰāĻā§āώāĻž āĻāϰāϤ⧠(To protect fiber joint from weather and mechanical damage)
- c) āĻĒāĻžāĻāϝāĻŧāĻžāϰ āϏāĻžāĻĒā§āϞāĻžāĻ āĻŦāĻā§āϏ⧠(In power box)
- d) āĻā§āĻŦāϞ āϰāĻ āĻāϰāĻžāϰ āĻāϰ⧠(In cable painting room)
(Which is required in mechanical splicing?)
- a) āĻāϰāĻŽ āĻāϰā§āĻ (Hot arc)
- b) āĻĒā§āϰāĻŋāĻĢā§āϝāĻžāĻŦā§āϰāĻŋāĻā§āĻā§āĻĄ āĻ ā§āϝāĻžāϞāĻžāĻāύāĻŽā§āύā§āĻ āϏā§āϞāĻŋāĻ (Prefabricated alignment sleeve)
- c) āϏā§āϞā§āĻĄāĻžāϰ āĻ āĻāϝāĻŧāϰāύ (Solder and iron)
- d) āĻšā§āϝāĻžāĻŽāĻžāϰ (Hammer)
(Why is a clean environment essential during splicing?)
- a) āĻļā§āϧ⧠āĻĻā§āĻāϤ⧠āϏā§āύā§āĻĻāϰ āϞāĻžāĻā§ (Only to look neat)
- b) āϧā§āϞā§-āĻŽāϝāĻŧāϞāĻž āĻāĻŽ āĻĨāĻžāĻāϞ⧠āϞāϏ āĻāĻŽ āĻšāϝāĻŧ (Less dust â less loss)
- c) āϏāϰāĻā§āĻāĻžāĻŽ āĻāĻŽ āϞāĻžāĻā§ (Fewer tools required)
- d) āĻā§āĻŦāϞā§āϰ āϰāĻ āĻāĻā§āĻā§āĻŦāϞ āĻĨāĻžāĻā§ (Cable colour remains bright)
(Which tool can be used to directly view fiber core end face?)
- a) āĻāύāϏā§āĻĒā§āĻāĻļāύ āĻŽāĻžāĻāĻā§āϰā§āϏā§āĻā§āĻĒ (Inspection microscope)
- b) āĻŽāĻžāϞā§āĻāĻŋāĻŽāĻŋāĻāĻžāϰ (Multimeter)
- c) āĻā§āϏā§āĻ āĻĒā§āύ (Test pen)
- d) āϏā§āĻā§āϰ⧠āĻĄā§āϰāĻžāĻāĻāĻžāϰ (Screwdriver)
(Where is âmass splicingâ used?)
- a) āĻāĻāϏāĻžāĻĨā§ āĻ āύā§āĻ āĻā§āϰ/āϰāĻŋāĻŦāύ āĻĢāĻžāĻāĻŦāĻžāϰ āϏā§āĻĒā§āϞāĻžāĻāϏ āĻāϰāϤ⧠(To splice many cores/ribbon fibers at once)
- b) āĻļā§āϧ⧠āĻāĻāĻāĻŋ āĻā§āϰ āϏā§āĻĒā§āϞāĻžāĻāϏ āĻāϰāϤ⧠(To splice a single core)
- c) āĻā§āĻŦāϞ āϰāĻ āĻĒāϰāĻŋāĻŦāϰā§āϤāύ āĻāϰāϤ⧠(To change cable colour)
- d) āĻā§āĻŦāϞ āĻĄā§āϰāĻžāĻŽ āĻāĻžāĻāϤ⧠(To cut cable drum)
(What is most important to keep splice loss low?)
- a) āϞāĻŽā§āĻŦāĻž āĻĒā§āϰā§āĻā§āĻāĻļāύ āϏā§āϞāĻŋāĻ (Longer sleeve)
- b) āĻā§āϰā§āϰ āϏāĻ āĻŋāĻ āĻ ā§āϝāĻžāϞāĻžāĻāύāĻŽā§āύā§āĻ āĻ āĻāĻžāϞ āĻā§āϞāĻŋāĻ (Proper core alignment and good cleave)
- c) āĻŦā§āĻļāĻŋ āĻāϰāĻŽ āĻāϰāĻž (Overheating)
- d) āϰāĻ āĻāϰāĻž (Colouring)
(Why is a splicing log sheet maintained?)
- a) āĻļā§āϧā§āĻ āύāĻžāĻŽ āϞā§āĻāĻžāϰ āĻāύā§āϝ (Only to write names)
- b) āĻā§āύ āĻā§āϰ āĻā§āĻĨāĻžāϝāĻŧ āϏā§āĻĒā§āϞāĻžāĻāϏ āĻšāϝāĻŧā§āĻā§ āĻ āĻā§ āϞāϏ āĻšāϝāĻŧā§āĻā§ āϤāĻž āϰā§āĻāϰā§āĻĄ āϰāĻžāĻāϤ⧠(To record which core is spliced where and what loss)
- c) āĻā§āĻŦāϞā§āϰ āϰāĻ āϞāĻŋāĻā§ āϰāĻžāĻāĻžāϰ āĻāύā§āϝ (To note cable colours)
- d) āĻĄā§āϰāĻžāĻŽā§āϰ āĻāĻāύ āϞā§āĻāĻžāϰ āĻāύā§āϝ (To note drum weight)
(What must be checked before switching on a fusion splicer?)
- a) āĻĄā§āϰāĻžāĻŽā§āϰ āϰāĻ (Drum colour)
- b) āϏāĻ āĻŋāĻ āĻĒāĻžāĻāϝāĻŧāĻžāϰ āϏāĻžāĻĒā§āϞāĻžāĻ āĻ āĻāϰā§āĻĨāĻŋāĻ (Proper power supply and earthing)
- c) āĻāĻŦāĻšāĻžāĻāϝāĻŧāĻž āĻā§āĻŽāύ (Weather condition only)
- d) āϞā§āĻāϏāĻāĻā§āϝāĻž (Number of people present)
(How should stripped fiber coating pieces be disposed?)
- a) āĻŽāĻžāĻāĻŋāϤ⧠āĻā§āĻĄāĻŧā§ (Throw on floor)
- b) āύāĻŋāϰā§āĻĻāĻŋāώā§āĻ āĻŦāϰā§āĻā§āϝ āĻāύā§āĻā§āĻāύāĻžāϰ⧠(In a dedicated waste container)
- c) āĻĒāĻā§āĻā§ āϰā§āĻā§ (Keep in pocket)
- d) āύāĻĻā§āϤ⧠āĻĢā§āϞ⧠(Throw in river)
(What must be kept in mind while arranging fibers in a splice tray?)
- a) āĻ āĻĒā§āϰāϝāĻŧā§āĻāύā§āϝāĻŧ āĻāĻāĻāĻžāĻŦāĻžāĻāĻāĻž āĻāϰ⧠āϰāĻžāĻāĻž (Keep them highly twisted)
- b) āĻŽāĻŋāύāĻŋāĻŽāĻžāĻŽ āĻŦā§āύā§āĻĄ āϰā§āĻĄāĻŋāϝāĻŧāĻžāϏ āĻ āĻŋāĻ āϰāĻžāĻāĻž (Maintain minimum bend radius)
- c) āĻāĻāϏāĻžāĻĨā§ āϏāĻŦ āĻĢāĻžāĻāĻŦāĻžāϰ āĻŦā§āĻāϧ⧠āϰāĻžāĻāĻž (Tie all fibers tightly together)
- d) āĻ āύā§āϧāĻāĻžāϰ⧠āĻāĻžāĻ āĻāϰāĻž (Work in dark)
(Which of the following is NOT essential in a splicing toolkit?)
- a) āĻĢāĻŋāĻāĻļāύ āϏā§āĻĒā§āϞāĻžāĻāϏāĻžāϰ (Fusion splicer)
- b) āĻā§āϞāĻŋāĻāĻžāϰ (Cleaver)
- c) āĻĢāĻžāĻāĻŦāĻžāϰ āϏā§āĻā§āϰāĻŋāĻĒāĻžāϰ (Fiber stripper)
- d) āĻā§āϝāĻžāϏ āĻā§āϞāĻž (Gas stove)
(How should the cloth/tissue used for cleaning fiber be?)
- a) āϞāĻŋāύā§āĻ-āĻĢā§āϰāĻŋ (Lint-free)
- b) āĻā§āĻŦ āĻŦā§āĻļāĻŋ āϞā§āĻŽāĻāϝāĻŧāĻžāϞāĻž (Very fluffy)
- c) āĻā§āĻāĻž āĻāĻžāĻĒāĻĄāĻŧ (Wet cloth with water)
- d) āϤā§āϞ⧠āĻā§āĻāĻžāύ⧠(Soaked in oil)
(What should be done after finishing splicing work at a site?)
- a) āϏāĻŦ āĻĢāĻžāĻāĻŦāĻžāϰ āĻā§āĻāϰāĻž āĻ āĻāĻŦāϰā§āĻāύāĻž āĻĒāϰāĻŋāώā§āĻāĻžāϰ āĻāϰāĻž (Clean all fiber scraps and waste)
- b) āϏāĻŦāĻāĻŋāĻā§ āĻĢā§āϞ⧠āϰā§āĻā§ āĻāϞ⧠āϝāĻžāĻāϝāĻŧāĻž (Leave everything as it is)
- c) āĻļā§āϧ⧠āĻŽā§āĻļāĻŋāύ āύāĻŋāϝāĻŧā§ āϝāĻžāĻāϝāĻŧāĻž (Take only the machine)
- d) āĻā§āĻŦāϞ āĻā§āĻā§ āĻĢā§āϞāĻž (Cut cables)
(What is one disadvantage of mechanical splicing?)
- a) āϏāĻŦāϏāĻŽāϝāĻŧ āĻļā§āύā§āϝ āϞāϏ (Always zero loss)
- b) āϏāĻžāϧāĻžāϰāĻŖāϤ āϞāϏ āĻĢāĻŋāĻāĻļāύ āϏā§āĻĒā§āϞāĻžāĻāϏā§āϰ āϤā§āϞāύāĻžāϝāĻŧ āĻŦā§āĻļāĻŋ (Loss usually higher than fusion splice)
- c) āĻāĻāύāĻ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻž āϝāĻžāϝāĻŧ āύāĻž (Can never be used)
- d) āĻā§āĻŦāϞ āĻā§āĻ āĻšāϝāĻŧ (Cable becomes shorter automatically)
(What is the purpose of âcore alignmentâ in fiber splicing?)
- a) āĻā§āϝāĻžāĻā§āĻ āĻŽāĻŋāϞāĻžāύ⧠(Align jackets)
- b) āĻā§āϞā§āϝāĻžāĻĄāĻŋāĻ āĻŽāĻŋāϞāĻžāύ⧠(Align claddings)
- c) āĻĻā§āĻ āĻā§āϰāĻā§ āĻāĻāĻ āϞāĻžāĻāύ⧠āĻāύ⧠āϞāϏ āĻāĻŽāĻžāύ⧠(Align two cores in same line to reduce loss)
- d) āĻā§āĻŦāϞ āϰāĻ āĻŽāĻŋāϞāĻžāύ⧠(Match cable colours)
Unit 3: Cable Laying and Installation â Multiple Choice Questions (MCCs) â 20 Ã 1 = 20
(What is the typical depth of an underground OFC trench on normal roads?)
- a) ā§§ā§Ļâ⧍ā§Ļ āϏā§āĻŽāĻŋ (10â20 cm)
- b) ā§Šā§Ļâā§Ēā§Ģ āϏā§āĻŽāĻŋ (30â45 cm)
- c) āĻĒā§āϰāĻžāϝāĻŧ ⧝ā§Ļ āϏā§āĻŽāĻŋ āĻŦāĻž āϤāĻžāϰ āĻŦā§āĻļāĻŋ (Around 90 cm or more)
- d) āĻ āĻŋāĻ āĻŽāĻžāĻāĻŋāϰ āĻāĻĒāϰā§āĻ (Just on ground surface)
(What is usually used as bedding material at the bottom of a cable trench?)
- a) āϧāĻžāϰāĻžāϞ⧠āĻĒāĻžāĻĨāϰ (Sharp stones)
- b) āύāϰāĻŽ āĻŦāĻžāϞāĻŋ/āĻĢāĻžāĻāύ āϏā§āϝāĻžāύā§āĻĄ (Soft/fine sand)
- c) āĻāĻāĻā§āϰāĻŋāĻ āĻŦā§āϞāĻ (Concrete blocks)
- d) āϞā§āĻšāĻžāϰ āĻā§āĻāϰāĻž (Iron pieces)
(In cable blowing method, how does the cable move?)
- a) āĻšāĻžāϤ⧠āĻā§āύ⧠(Pulled by hand)
- b) āĻāĻāĻā§āĻ āĻĻāĻŋāϝāĻŧā§ āĻā§āύ⧠(Pulled by winch)
- c) āĻŦāĻžāϤāĻžāϏā§āϰ āĻāĻžāĻĒā§āϰ āϏāĻžāĻšāĻžāϝā§āϝ⧠āĻĄāĻžāĻā§āĻā§āϰ āĻāĻŋāϤāϰ⧠(Through duct using air pressure)
- d) āĻĒāĻžāύāĻŋāϤ⧠āĻāĻžāϏāĻŋāϝāĻŧā§ (Floating in water)
(Aerial OFC is commonly done using which type of cable?)
- a) āĻāϰā§āĻŽāĻžāϰā§āĻĄ āĻāύā§āĻĄāĻžāϰāĻā§āϰāĻžāĻāύā§āĻĄ āĻā§āĻŦāϞ (Armoured underground cable)
- b) ADSS (All-Dielectric Self-Supporting) āĻā§āĻŦāϞ
- c) āĻĒāĻžāύāĻŋāϰ āĻĒāĻžāĻāĻĒ (Water pipe)
- d) āĻāĻĒāĻžāϰ āĻā§āĻāϏā§āĻā§āĻĄ āĻĒā§āϝāĻŧāĻžāϰ (Copper twisted pair)
(What is the loop of extra cable kept at joint locations called?)
- a) āĻĒāĻžāĻāϝāĻŧāĻžāϰ āϞā§āĻĒ (Power loop)
- b) āϏāĻžāϰā§āĻāĻŋāϏ āϞā§āĻĒ (Service loop)
- c) āĻā§āϰāĻžāĻāύā§āĻĄ āϞā§āĻĒ (Ground loop)
- d) āϏāĻŋāĻāύā§āϝāĻžāϞ āϞā§āĻĒ (Signal loop)
(What is usually done if a cable duct is blocked?)
- a) āĻĄāĻžāĻā§āĻ āĻĢā§āϞ⧠āĻĻā§āĻāϝāĻŧāĻž (Discard duct)
- b) āĻĄāĻžāĻā§āĻ āĻŦā§āϞā§āϝāĻŧāĻŋāĻ āĻŦāĻž āϰāĻĄāĻŋāĻ āĻāϰ⧠āĻĒāϰāĻŋāώā§āĻāĻžāϰ āĻāϰāĻž (Clean by blowing/rodding)
- c) āĻā§āĻŦāϞ āĻā§āϰ⧠āĻā§āύ⧠āύā§āĻāϝāĻŧāĻž (Pull cable very hard)
- d) āĻŦā§āϞāĻ āĻ āĻāĻļā§ āĻā§āĻŦāϞ āĻā§āĻā§ āĻĢā§āϞāĻž (Cut cable at blocked part)
(Why is lubricant used while pulling cables?)
- a) āĻā§āĻŦāϞ āϰāĻ āĻĒāϰāĻŋāĻŦāϰā§āϤāύ āĻāϰāϤ⧠(To change cable colour)
- b) āĻāĻžāύāĻžāϰ āĻāϰā§āώāĻŖ āĻāĻŽāĻžāϤ⧠(To reduce pulling friction)
- c) āĻā§āĻŦāϞ āĻāĻžāϰ⧠āĻāϰāϤ⧠(To make cable heavier)
- d) āĻā§āĻŦāϞā§āϰ āĻĻā§āϰā§āĻā§āϝ āĻŦāĻžāĻĄāĻŧāĻžāϤ⧠(To increase cable length)
(What should be done for safety when opening a manhole/chamber?)
- a) āĻā§āύ⧠āϏāϤāϰā§āĻāϤāĻž āĻāĻžāĻĄāĻŧāĻžāĻ āĻā§āϞ⧠āϰāĻžāĻāĻž (Open without caution)
- b) āϏā§āĻĢāĻāĻŋ āĻŦā§āϝāĻžāϰāĻŋāĻā§āĻĄ āĻ āĻāϝāĻŧāĻžāϰā§āύāĻŋāĻ āĻŦā§āϰā§āĻĄ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻž (Use safety barricades and warning boards)
- c) āϰāĻžāϏā§āϤāĻžāϰ āĻŽāĻžāĻāĻāĻžāύ⧠āϰā§āĻā§ āĻĻā§āĻāϝāĻŧāĻž (Leave cover in middle of road)
- d) āĻļā§āϧ⧠āϰāĻžāϤ⧠āĻāĻžāĻ āĻāϰāĻž (Work only at night without signs)
(What is the purpose of using rollers during cable laying?)
- a) āĻā§āĻŦāϞ āĻāĻžāĻāĻžāϰ āĻāύā§āϝ (To cut cable)
- b) āĻā§āĻŦāϞāĻā§ āĻŽāĻžāĻāĻŋ āĻĨā§āĻā§ āϤā§āϞ⧠āĻāϰā§āώāĻŖ āĻāĻŽāĻžāύ⧠āĻ āϰāĻā§āώāĻž āĻāϰāĻž (To keep cable off ground, reduce friction and protect)
- c) āĻĄā§āϰāĻžāĻŽ āĻā§āϰāĻžāύā§āϰ āĻāύā§āϝ (To rotate drum)
- d) āϰāĻ āĻāϰāĻžāϰ āĻāύā§āϝ (To paint cable)
(What is meant by âoverhead clearanceâ?)
- a) āĻā§āĻŦāϞā§āϰ āĻŦā§āϝāĻžāϏ (Cable diameter)
- b) āĻā§āĻŦāϞ āĻĨā§āĻā§ āĻŽāĻžāĻāĻŋāϰ āĻĻā§āϰāϤā§āĻŦ (Distance of cable from ground)
- c) āĻā§āĻŦāϞ āĻĨā§āĻā§ āĻĒāĻžāĻļā§āϰ āĻĻā§āĻāϝāĻŧāĻžāϞā§āϰ āĻĻā§āϰāϤā§āĻŦ (Distance from wall)
- d) āĻĄā§āϰāĻžāĻŽā§āϰ āĻāĻā§āĻāϤāĻž (Height of drum)
(How is OFC usually routed while crossing rivers/drains?)
- a) āĻĒāĻžāύāĻŋāϰ āĻāĻĒāϰ āĻāĻžāϏāĻŋāϝāĻŧā§ (Floating on water)
- b) āϏā§āϤā§āϰ āϏā§āĻā§āϰāĻžāĻāĻāĻžāϰā§āϰ āϏāĻžāĻĨā§ āĻŦāĻž āĻāϞāĻžāĻĻāĻž āĻāύā§āĻĄā§āĻāĻā§ (Along bridge structure or separate conduit)
- c) āĻā§āĻŦāϞ āĻĢā§āϞ⧠āϰāĻžāĻāĻž (Leaving cable loose)
- d) āύā§āĻāĻžāϰ āϏāĻā§āĻā§ āĻŦā§āĻāϧ⧠(Tied to boats)
(Where is an indoor drop cable generally used?)
- a) āϏāĻŽā§āĻĻā§āϰāϤāϞ⧠(Under sea)
- b) āĻāĻŦāύā§āϰ āĻā§āϤāϰ āĻā§āϰāĻžāĻšāĻā§āϰ āĻĒā§āϰāĻžāĻā§āĻāĻŖā§ (Inside buildings till customer premises)
- c) āĻšāĻžāĻāĻāϝāĻŧā§ āĻā§āϰāϏāĻŋāĻāϝāĻŧā§ (On highways)
- d) āϰā§āϞ āĻā§āϰāϏāĻŋāĻāϝāĻŧā§ (Railway crossings)
(Which of the following must be marked on the cable route map?)
- a) āĻā§āĻŦāϞ āϰāĻ (Cable colour)
- b) āĻāϝāĻŧā§āύā§āĻ āϞā§āĻā§āĻļāύ, āĻŽā§āϝāĻžāύāĻšā§āϞ, āĻā§āϰāϏāĻŋāĻ (Joint locations, manholes, crossings)
- c) āĻļā§āϰāĻŽāĻŋāĻā§āϰ āϏāĻāĻā§āϝāĻž (Number of workers)
- d) āĻāĻžāĻĄāĻŧāĻŋāϰ āύāĻŽā§āĻŦāϰ (Vehicle numbers)
(What is the main purpose of armored cable?)
- a) āĻŦā§āϝāĻžāύā§āĻĄāĻāĻāĻĨ āĻŦāĻžāĻĄāĻŧāĻžāύ⧠(To increase bandwidth)
- b) āϝāĻžāύā§āϤā§āϰāĻŋāĻ āϏā§āϰāĻā§āώāĻž āĻĻā§āĻāϝāĻŧāĻž (To provide mechanical protection)
- c) āĻ āĻĒāĻāĻŋāĻā§āϝāĻžāϞ āϞāϏ āĻāĻŽāĻžāύ⧠(To reduce optical loss)
- d) āϰāĻ āĻāĻā§āĻā§āĻŦāϞ āĻāϰāĻž (To brighten colour)
(At what level is danger/warning tape placed in the trench?)
- a) āĻā§āĻŦāϞā§āϰ āĻāĻāĻĻāĻŽ āύāĻŋāĻā§ (Just below cable)
- b) āĻā§āĻŦāϞā§āϰ āĻāĻĒāϰ āĻāĻŋāĻā§āĻāĻž āĻŽāĻžāĻāĻŋ āĻĻāĻŋāϝāĻŧā§ āĻāĻĒāϰ⧠(Above cable after some backfill)
- c) āĻāĻāĻĻāĻŽ āĻāĻĒāϰāĻŋāĻāĻžāĻā§ (On ground surface only)
- d) āĻĄā§āϰāĻžāĻŽā§āϰ āĻā§āϤāϰ⧠(Inside drum)
(Where should bends in cable be minimized during laying?)
- a) āϝā§āĻā§āύ⧠āĻāĻžāϝāĻŧāĻāĻžāϝāĻŧ (Anywhere)
- b) āĻā§āĻŦāϞ āĻĒā§āϰāĻŦā§āĻļ āĻ āĻĒā§āϰāϏā§āĻĨāĻžāύ āϏā§āĻĨāĻžāύ⧠(At entry and exit of ducts/manholes)
- c) āĻļā§āϧ⧠āĻĄā§āϰāĻžāĻŽā§āϰ āĻĒāĻžāĻļā§ (Only near drum)
- d) āĻļā§āϧ⧠āĻāϰā§āϰ āĻā§āϤāϰ⧠(Only indoors)
(Which document must be updated after cable laying work?)
- a) āĻā§āĻŦāϞ āϰāĻ āĻāĻžāϰā§āĻ (Cable colour chart)
- b) âāĻ ā§āϝāĻžāĻ-āĻŦāĻŋāϞā§āĻâ āĻĄā§āϰāϝāĻŧāĻŋāĻ/āϰā§āĻ āĻŽā§āϝāĻžāĻĒ (As-built drawings/route map)
- c) āĻāϰā§āĻŽāĻāĻžāϰā§āϰ āĻŦā§āϤāύ āϰā§āĻāĻŋāϏā§āĻāĻžāϰ (Salary register)
- d) āĻā§āϝāĻžāύā§āĻāĻŋāύ āĻŽā§āύ⧠(Canteen menu)
(What does the âcutting length markingâ on a cable drum indicate?)
- a) āĻĄā§āϰāĻžāĻŽā§āϰ āĻŦā§āϝāĻžāϏ (Drum diameter)
- b) āĻā§āĻŦāϞā§āϰ āĻŽā§āĻ āĻĻā§āϰā§āĻā§āϝ (Total cable length)
- c) āĻā§āĻĨāĻžāϝāĻŧ āĻā§āĻŦāϞ āĻāĻžāĻāϞ⧠āύāĻŋāϰā§āĻĻāĻŋāώā§āĻ āϞā§āύā§āĻĨ āĻĒāĻžāĻāϝāĻŧāĻž āϝāĻžāĻŦā§ (Where to cut to get specific lengths)
- d) āĻā§āĻŦāϞā§āϰ āϰāĻ āĻā§āĻĄ (Cable colour code)
(What should be done if heavy rain starts during cable laying?)
- a) āĻā§āϰā§āĻā§āĻā§ āĻāϞ āĻāĻŽāϤ⧠āĻĻā§āĻāϝāĻŧāĻž (Allow water to fill trench)
- b) āĻāĻžāĻ āĻŦāύā§āϧ āĻāϰ⧠āĻā§āĻŦāϞ āĻ āϏāϰāĻā§āĻāĻžāĻŽ āϏā§āϰāĻā§āώāĻŋāϤ āϰāĻžāĻāĻž (Stop work and secure cables and tools)
- c) āĻā§āϰ⧠āĻāĻžāĻ āĻāĻžāϞāĻŋāϝāĻŧā§ āϝāĻžāĻāϝāĻŧāĻž (Continue work faster)
- d) āĻĄā§āϰāĻžāĻŽ āĻĒāĻžāύāĻŋāϤ⧠āĻĢā§āϞ⧠āϰāĻžāĻāĻž (Leave drum in water)
(Why is traffic management important during roadside OFC installation?)
- a) āĻļā§āϧ⧠āϝāĻžāύāĻāĻ āĻŦāĻžāĻĄāĻŧāĻžāύā§āϰ āĻāύā§āϝ (Only to create traffic jam)
- b) āĻĻā§āϰā§āĻāĻāύāĻž āĻāĻĄāĻŧāĻŋāϝāĻŧā§ āύāĻŋāϰāĻžāĻĒāĻĻāĻāĻžāĻŦā§ āĻāĻžāĻ āĻāϰāĻžāϰ āĻāύā§āϝ (To avoid accidents and work safely)
- c) āĻāĻžāĻĄāĻŧāĻŋāϰ āĻāϤāĻŋ āĻŦāĻžāĻĄāĻŧāĻžāύā§āϰ āĻāύā§āϝ (To increase vehicle speed)
- d) āĻĄā§āϰāĻžāĻŽā§āϰ āĻāĻāύ āĻŽāĻžāĻĒāĻžāϰ āĻāύā§āϝ (To measure drum weight)
Unit 4: Testing Installation of OFC â Multiple Choice Questions (MCQs) â 20 Ã 1 = 20
(Insertion loss test is usually performed using which two instruments?)
- a) āĻĒāĻžāĻāϝāĻŧāĻžāϰ āĻŽāĻŋāĻāĻžāϰ āĻ āϏā§āϰā§āϏ (Power meter and light source)
- b) āĻŽāĻžāϞā§āĻāĻŋāĻŽāĻŋāĻāĻžāϰ āĻ āĻŦā§āϝāĻžāĻāĻžāϰāĻŋ (Multimeter and battery)
- c) āϤāĻžāĻĒāĻŽāĻžāϤā§āϰāĻž āĻŽāĻŋāĻāĻžāϰ āĻ āĻĢā§āϝāĻžāύ (Thermometer and fan)
- d) āϏā§āĻā§āϰ⧠āĻĄā§āϰāĻžāĻāĻāĻžāϰ āĻ āĻšāĻžāϤā§āĻĄāĻŧāĻŋ (Screwdriver and hammer)
(Why is a launch fiber used in OTDR testing?)
- a) āĻā§āĻŦāϞā§āϰ āϰāĻ āĻĻā§āĻāĻžāϰ āĻāύā§āϝ (To see cable colour)
- b) āĻļā§āϰā§āϰ āĻāĻžāύā§āĻā§āĻāϰ āĻ āύāĻŋāĻāĻāĻŦāϰā§āϤ⧠āĻāĻā§āύā§āĻ āĻ āĻŋāĻāĻŽāϤ⧠āĻŽāĻžāĻĒāĻžāϰ āĻāύā§āϝ (To properly measure near-end connector and events)
- c) āĻā§āĻŦāϞ āĻā§āĻ āĻāϰāĻžāϰ āĻāύā§āϝ (To shorten cable)
- d) OTDR āĻ āĻžāύā§āĻĄāĻž āϰāĻžāĻāĻžāϰ āĻāύā§āϝ (To keep OTDR cool)
(Where is the receive fiber connected in an OTDR test?)
- a) OTDR-āĻāϰ āĻāĻā§ (Before OTDR)
- b) āϞāĻŋāĻā§āĻā§āϰ āĻĻā§āϰ āĻĒā§āϰāĻžāύā§āϤ⧠(At the far end of the link)
- c) āĻĄā§āϰāĻžāĻŽā§āϰ āĻāĻžāĻā§ (Near drum)
- d) āĻĒāĻžāĻāϝāĻŧāĻžāϰ āϏāĻžāĻĒā§āϞāĻžāĻ-āϤ⧠(To power supply)
(Higher the dynamic range of an OTDR, the â)
- a) āĻāĻŽ āĻĻā§āϰāϤā§āĻŦ āĻĻā§āĻāĻž āϝāĻžāϝāĻŧ (Shorter distance can be tested)
- b) āĻŦā§āĻļāĻŋ āĻĻā§āϰāϤā§āĻŦ āĻ āĻā§āĻ āĻāĻā§āύā§āĻ āĻĻā§āĻāĻž āϝāĻžāϝāĻŧ (Longer distance and smaller events can be seen)
- c) āĻā§āĻŦāϞ āϰāĻ āĻāĻā§āĻā§āĻŦāϞ āĻšāϝāĻŧ (Cable colour brighter)
- d) āĻā§āĻŦāϞ āĻŦā§āϝāĻžāϏ āĻŦāĻžāĻĄāĻŧā§ (Cable diameter increases)
(In dBm, a less negative value (e.g., -30 to -15 dBm) indicates what about power?)
- a) āĻāĻŽ āĻĒāĻžāĻāϝāĻŧāĻžāϰ (Lower power)
- b) āĻŦā§āĻļāĻŋ āĻĒāĻžāĻāϝāĻŧāĻžāϰ (Higher power)
- c) āĻļā§āύā§āϝ āĻĒāĻžāĻāϝāĻŧāĻžāϰ (Zero power)
- d) āĻāĻŋāĻā§ āĻŦā§āĻāĻžāϝāĻŧ āύāĻž (Means nothing)
(What does âsetting referenceâ mean in insertion loss testing?)
- a) āĻā§āĻŦāϞ āĻā§āĻā§ āĻā§āĻ āĻāϰāĻž (Cutting cable)
- b) āĻĒāϰāĻŋāĻāĻŋāϤ āĻāĻžāϞ⧠āϞāĻŋāĻā§āĻāĻā§ ā§Ļ dB āϧāϰ⧠āύā§āĻāϝāĻŧāĻž (Setting a known good link as 0 dB)
- c) OTDR āĻŦāύā§āϧ āĻāϰāĻž (Switching off OTDR)
- d) āĻā§āĻŦāϞā§āϰ āϰāĻ āϞāĻŋāĻā§ āϰāĻžāĻāĻž (Writing cable colour)
(If fiber connectors are dirty during testing, what is the usual effect?)
- a) āϞāϏ āĻāĻŽā§ āϝāĻžāϝāĻŧ (Loss decreases)
- b) āϞāϏ āĻ āϰāĻŋāĻāĻžāϰā§āύ āϞāϏ āĻāĻžāϰāĻžāĻĒ āĻšāϝāĻŧ (Loss and return loss worsen)
- c) āĻā§āύ⧠āĻĒā§āϰāĻāĻžāĻŦ āύā§āĻ (No effect)
- d) āĻā§āĻŦāϞ āϞāĻŽā§āĻŦāĻž āĻšāϝāĻŧ (Cable length increases)
(What do small peaks/spikes in an OTDR trace usually indicate?)
- a) āĻļā§āϧā§āĻ āĻā§āĻŦāϞ āϰāĻ (Only cable colour change)
- b) āĻāĻžāύā§āĻā§āĻāϰ āĻŦāĻž āϏā§āĻĒā§āϞāĻžāĻāϏ āĻāĻā§āύā§āĻ (Connector or splice events)
- c) āϤāĻžāĻĒāĻŽāĻžāϤā§āϰāĻž āĻĒāϰāĻŋāĻŦāϰā§āϤāύ (Temperature change)
- d) āĻĄā§āϰāĻžāĻŽā§āϰ āĻāĻāύ (Drum weight)
(Which of the following is NOT checked during installation acceptance testing?)
- a) āϞāĻŋāĻā§āĻ āϞāϏ (Link loss)
- b) OTDR āĻāĻā§āύā§āĻ āĻ āĻŦā§āϰā§āĻ (OTDR events and breaks)
- c) āĻā§āĻŦāϞ āϰā§āĻ āĻĄāĻā§āĻŽā§āύā§āĻā§āĻļāύ (Cable route documentation)
- d) āĻā§āĻāύāĻŋāĻļāĻŋāϝāĻŧāĻžāύā§āϰ āĻŦā§āϤāύ āϏā§āϞāĻŋāĻĒ (Technicianâs salary slip)
(In insertion loss testing, what does the âsourceâ usually provide?)
- a) āϏāĻžāĻĻāĻž āĻāϞ⧠(White light)
- b) āύāĻŋāϰā§āĻĻāĻŋāώā§āĻ āϤāϰāĻā§āĻāĻĻā§āϰā§āĻā§āϝā§āϰ āϞā§āĻāĻžāϰ/āĻāϞāĻāĻĄāĻŋ āĻāϞ⧠(Laser/LED at specific wavelength)
- c) āĻļā§āϧ⧠āϤāĻžāĻĒ (Only heat)
- d) āĻļāĻŦā§āĻĻ (Sound)
(What is a simple way to test fiber continuity?)
- a) āĻā§āϏā§āĻ āĻĒā§āύ āĻŦāĻž VFL āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰ⧠āĻāĻ āĻĒā§āϰāĻžāύā§āϤ⧠āĻāϞ⧠āĻĻāĻŋāϝāĻŧā§ āĻ āύā§āϝ āĻĒā§āϰāĻžāύā§āϤ⧠āĻĻā§āĻāĻž (Using test pen/VFL and checking light on other end)
- b) Multimeter āĻĻāĻŋāϝāĻŧā§ āĻā§āϞā§āĻā§āĻ āĻŽāĻžāĻĒāĻž (Measure voltage with multimeter)
- c) āĻā§āĻŦāϞ āĻā§āĻā§ āĻĻā§āĻāĻž (Cut cable)
- d) āĻā§āĻŦāϞ āĻāĻžāĻāĻāĻžāύ⧠(Shake cable)
(Why is bidirectional testing done with OTDR?)
- a) āĻā§āĻŦāϞ āϰāĻ āĻŽāĻŋāϞāĻžāύā§āϰ āĻāύā§āϝ (To match cable colours)
- b) āĻĻā§āĻ āĻĻāĻŋāĻ āĻĨā§āĻā§ āĻŽāĻžāĻĒ āύāĻŋāϝāĻŧā§ āĻāĻĄāĻŧ āϞāϏ āĻŦā§āϰ āĻāϰāϤ⧠(To measure from both ends and average loss)
- c) āĻā§āĻŦāϞ āĻā§āĻ āĻāϰāĻžāϰ āĻāύā§āϝ (To shorten cable)
- d) āĻā§āĻŦāϞ āĻāϰāĻŽ āĻāϰāĻžāϰ āĻāύā§āϝ (To heat cable)
(Which unit is commonly used with an optical power meter?)
- a) āĻā§āϞā§āĻ (Volt)
- b) āĻ ā§āϝāĻžāĻŽā§āĻĒāĻŋāϝāĻŧāĻžāϰ (Ampere)
- c) dBm
- d) āĻšāĻžāϰā§āĻāĻ (Hertz)
(Why is warm-up time given before fiber testing instruments are used?)
- a) āĻĄā§āϰāĻžāĻŽ āĻāϰāĻŽ āĻāϰāĻžāϰ āĻāύā§āϝ (To heat the drum)
- b) āϝāύā§āϤā§āϰā§āϰ āϰāĻŋāĻĄāĻŋāĻ āϏā§āĻĨāĻŋāϤāĻŋāĻļā§āϞ āĻāϰāϤ⧠(To stabilize instrument readings)
- c) āĻā§āĻāύāĻŋāĻļāĻŋāϝāĻŧāĻžāύāĻĻā§āϰ āĻŦāĻŋāĻļā§āϰāĻžāĻŽā§āϰ āĻāύā§āϝ (For technician rest)
- d) āĻā§āĻŦāϞ āϞāĻŽā§āĻŦāĻž āĻāϰāĻžāϰ āĻāύā§āϝ (To lengthen cable)
(Pass/Fail in a test report is usually based on what?)
- a) āĻā§āĻŦāϞ āϰāĻ āĻ āĻŋāĻ āĻāĻā§ āĻāĻŋ āύāĻž (Whether cable colour is correct)
- b) āϞāϏ āĻ āϰāĻŋāĻāĻžāϰā§āύ āϞāϏ āύāĻŋāϰā§āϧāĻžāϰāĻŋāϤ āϏā§āĻŽāĻžāϰ āĻŽāϧā§āϝ⧠āĻāĻā§ āĻāĻŋ āύāĻž (Whether loss & return loss meet specified limits)
- c) OTDR āĻŽā§āĻ āĻā§āύ āĻā§āĻŽā§āĻĒāĻžāύāĻŋ (OTDR brand)
- d) āĻā§āĻāύāĻŋāĻļāĻŋāϝāĻŧāĻžāύā§āϰ āύāĻžāĻŽ (Technicianâs name)
(Why is labeling important during installation testing?)
- a) āĻā§āĻŦāϞāĻā§ āϏāĻžāĻāĻžāύā§āϰ āĻāύā§āϝ (Just for decoration)
- b) āĻā§āύ āĻĢāĻžāĻāĻŦāĻžāϰ āĻā§āύ āĻā§āϰ/āĻĒā§āϰā§āĻā§ āϝāĻžāĻā§āĻā§ āϤāĻž āĻāĻŦāĻŋāώā§āϝāϤ⧠āĻā§āύāĻžāϰ āĻāύā§āϝ (To identify which fiber goes to which core/port later)
- c) āĻā§āϏā§āĻ āĻĄā§āĻāĻž āύāώā§āĻ āĻāϰāĻžāϰ āĻāύā§āϝ (To destroy test data)
- d) āĻĄā§āϰāĻžāĻŽā§āϰ āĻāĻāύ āϞā§āĻāĻžāϰ āĻāύā§āϝ (To note drum weight)
(What problem may occur if someone steps on fiber cable during testing?)
- a) āĻā§āύ⧠āϏāĻŽāϏā§āϝāĻž āύā§āĻ (No problem)
- b) āĻŦā§āύā§āĻĄ āϞāϏ āĻŦāĻžāĻĄāĻŧāϤ⧠āĻĒāĻžāϰ⧠(Bend loss may increase)
- c) āĻĒāĻžāĻāϝāĻŧāĻžāϰ āĻŽāĻŋāĻāĻžāϰ āĻŦāύā§āϧ āĻšāϝāĻŧā§ āϝāĻžāϝāĻŧ (Power meter switches off)
- d) OTDR āĻŽā§āĻā§ āϝāĻžāϝāĻŧ (OTDR is erased)
(What is the risk if test data is not saved after testing?)
- a) āĻā§āύ⧠āĻā§āĻāĻāĻŋ āύā§āĻ (No risk)
- b) āĻāĻŦāĻŋāώā§āϝāϤ⧠āϤā§āϰā§āĻāĻŋ āĻ āύā§āϏāύā§āϧāĻžāύ⧠āϏāĻŽāϏā§āϝāĻž āĻšāĻŦā§ (Trouble in future fault-finding)
- c) āĻā§āĻŦāϞā§āϰ āϰāĻ āĻŦāĻĻāϞ⧠āϝāĻžāĻŦā§ (Cable colour will change)
- d) āĻā§āĻŦāϞ āϞāĻŽā§āĻŦāĻž āĻšāĻŦā§ (Cable will lengthen)
(How does a macro-bend event usually appear on OTDR?)
- a) āĻšāĻ āĻžā§ āĻŦāĻĄāĻŧ āĻĒāĻŋāĻ (Big upward peak)
- b) āϧā§āϰ⧠āϧā§āϰ⧠āϞāϏ āĻŦāĻžāĻĄāĻŧāĻž āĻŦāĻž āĻāĻāĻāĻŋ āĻā§āĻ āĻĄā§āϰāĻĒ (Gradual loss increase/small drop)
- c) āĻāĻā§āĻŦāĻžāϰā§āĻ āĻāĻŋāĻā§ āύāĻž (No change)
- d) āϏāϰāϞ āϏāĻŽāϤāϞ āϞāĻžāĻāύ (Flat straight line)
(Why is following safety guidelines important during installation testing?)
- a) āĻļā§āϧ⧠āϰāĻŋāĻĒā§āϰā§āĻ āϏā§āύā§āĻĻāϰ āĻāϰāϤ⧠(Only to make report nice)
- b) āĻā§āĻāύāĻŋāĻļāĻŋāϝāĻŧāĻžāύ āĻ āϝāύā§āϤā§āϰāĻĒāĻžāϤāĻŋāϰ āϏā§āϰāĻā§āώāĻžāϰ āĻāύā§āϝ (For safety of technicians and equipment)
- c) āĻāĻžāĻ āϧā§āϰ⧠āĻāϰāĻžāϰ āĻāύā§āϝ (To slow down work)
- d) āĻā§āĻŦāϞā§āϰ āϰāĻ āĻ āĻŋāĻ āϰāĻžāĻāĻžāϰ āĻāύā§āϝ (To keep cable colour right)
Unit 5: Health & Safety Measures and Networking â Multiple Choice Questions (MCQs) â 20 Ã 1 = 20
(What should be used to protect eyes while cutting fibers?)
- a) āϏāĻžāϧāĻžāϰāĻŖ āĻāĻļāĻŽāĻž (Normal spectacles)
- b) āϏā§āĻĢāĻāĻŋ āĻāĻāϞāϏ (Safety goggles)
- c) āĻā§āύ⧠āĻāĻŋāĻā§ āύāϝāĻŧ (Nothing)
- d) āĻšā§āϝāĻžāĻ (Hat)
(What is a special risk while working inside trenches?)
- a) āĻ āϤāĻŋāϰāĻŋāĻā§āϤ āĻāϞ⧠(Excess light)
- b) āϧāϏ, āĻā§āϝāĻžāϏ āĻāĻŽāĻž āĻ āĻ āĻā§āϏāĻŋāĻā§āύā§āϰ āĻāĻžāĻāϤāĻŋ (Collapse, gas accumulation, lack of oxygen)
- c) āĻ āĻžāύā§āĻĄāĻž āĻŦāĻžāϤāĻžāϏ (Cold air)
- d) āĻļā§āϧ⧠āĻļāĻŦā§āĻĻ (Only noise)
(In which case is Lock-Out Tag-Out (LOTO) used?)
- a) āĻāĻžāĻŦāĻžāϰ āĻĒāϰāĻŋāĻŦā§āĻļāύ (Serving food)
- b) āĻŦā§āĻĻā§āϝā§āϤāĻŋāĻ/āϝāĻžāύā§āϤā§āϰāĻŋāĻ āϝāύā§āϤā§āϰ āĻŽā§āĻāύāĻā§āύā§āύā§āϏā§āϰ āĻāĻā§ āĻĒāĻžāĻāϝāĻŧāĻžāϰ āύāĻŋāĻļā§āĻāĻŋāϤāĻāĻžāĻŦā§ āĻŦāύā§āϧ āϰāĻžāĻāϤ⧠(To ensure power is off before electrical/mechanical maintenance)
- c) āĻĄā§āϰāĻžāĻŽ āĻā§āϰāĻžāύā§āϰ āĻāĻā§ (Before rolling drum)
- d) āĻā§āĻŦāϞ āϰāĻ āĻāϰāĻžāϰ āϏāĻŽāϝāĻŧ (While painting cable)
(If a small fiber piece gets stuck in the skin, what should be done first?)
- a) āĻā§āϰ⧠āĻāώāĻž (Rub hard)
- b) āĻĒāϰāĻŋāώā§āĻāĻžāϰ āĻĒāĻžāύāĻŋ āĻĻāĻŋāϝāĻŧā§ āϧā§āϝāĻŧā§ āĻĒā§āϰāϝāĻŧā§āĻāύ āĻšāϞ⧠āĻāĻŋāĻāĻŋā§āϏāĻā§āϰ āĻāĻžāĻā§ āϝāĻžāĻāϝāĻŧāĻž (Rinse with clean water and visit doctor if needed)
- c) āĻāĻĒā§āĻā§āώāĻž āĻāϰāĻž (Ignore it)
- d) āĻĒāĻā§āĻā§ āϰāĻžāĻāĻž (Keep it in pocket)
(Which PPE is especially important when working at heights like poles/towers?)
- a) āϏā§āĻĢāĻāĻŋ āĻā§āϞāĻžāĻāϏ (Safety gloves)
- b) āϏā§āĻĢāĻāĻŋ āĻšāĻžāϰāύā§āϏ (Safety harness)
- c) āĻāĻāύ āĻā§āϝāĻžāĻĒ (Cotton cap)
- d) āϏā§āϝāĻžāύā§āĻĄā§āϞ (Sandals)
(Why are safety cones and barricades used while working near roads?)
- a) āϰāĻžāϏā§āϤāĻž āϏāĻžāĻāĻžāύā§āϰ āĻāύā§āϝ (To decorate roads)
- b) āĻĒāĻĨāĻāĻžāϰ⧠āĻ āϝāĻžāύāĻŦāĻžāĻšāύāĻā§ āϏāϤāϰā§āĻ āĻāϰāĻžāϰ āĻāύā§āϝ (To warn pedestrians and vehicles)
- c) āĻā§āĻŦāϞ āϞāĻŽā§āĻŦāĻž āĻāϰāĻžāϰ āĻāύā§āϝ (To increase cable length)
- d) āĻĄā§āϰāĻžāĻŽ āĻāϰāĻŽ āĻāϰāĻžāϰ āĻāύā§āϝ (To heat drum)
(If a chemical splashes into the eyes, what is the first step?)
- a) āĻā§āĻ āĻŦāύā§āϧ āĻāϰ⧠āĻā§āĻŽāĻŋāϝāĻŧā§ āĻĒāĻĄāĻŧāĻž (Close eyes and sleep)
- b) āĻĒā§āϰāĻā§āϰ āĻĒāϰāĻŋāĻŽāĻžāĻŖ āĻĒāϰāĻŋāώā§āĻāĻžāϰ āĻĒāĻžāύāĻŋ āĻĻāĻŋāϝāĻŧā§ āϧā§āϝāĻŧā§ āĻĢā§āϞāĻž (Flush with plenty of clean water)
- c) āĻāĻžāĻĒāĻĄāĻŧ āĻĻāĻŋāϝāĻŧā§ āĻāώāĻž (Rub with cloth)
- d) āĻāĻŋāĻā§āĻ āύāĻž āĻāϰāĻž (Do nothing)
(What does an IP Address represent in a network?)
- a) āĻāĻŽā§āĻĒāĻŋāĻāĻāĻžāϰā§āϰ āĻāĻāύ (Weight of computer)
- b) āύā§āĻāĻāϝāĻŧāĻžāϰā§āĻā§ āĻĄāĻŋāĻāĻžāĻāϏā§āϰ āĻ āύāύā§āϝ āĻ āĻŋāĻāĻžāύāĻž (Unique address of a device on network)
- c) āĻŽāύāĻŋāĻāϰā§āϰ āϏāĻžāĻāĻ (Monitor size)
- d) āĻā§āĻŦāϞā§āϰ āĻĻā§āϰā§āĻā§āϝ (Cable length)
(What does a firewall do in a network?)
- a) āĻā§āĻŦāϞā§āϰ āϞāϏ āĻāĻŽāĻžāϝāĻŧ (Reduces cable loss)
- b) āĻ āύāύā§āĻŽā§āĻĻāĻŋāϤ āĻ ā§āϝāĻžāĻā§āϏā§āϏ āĻĢāĻŋāϞā§āĻāĻžāϰ āĻāϰ⧠(Filters unauthorized access)
- c) āĻā§āĻŦāϞ āϞāĻŽā§āĻŦāĻž āĻāϰ⧠(Makes cable longer)
- d) āĻŽāύāĻŋāĻāϰā§āϰ āĻāĻā§āĻā§āĻŦāϞāϤāĻž āĻŦāĻžāĻĄāĻŧāĻžāϝāĻŧ (Increases monitor brightness)
(Which device is used to provide wireless internet inside homes?)
- a) āϏā§āĻāĻ (Switch)
- b) āϰāĻžāĻāĻāĻžāϰ/āĻāϝāĻŧāĻžāĻ-āĻĢāĻžāĻ āϰāĻžāĻāĻāĻžāϰ (Router/Wi-Fi router)
- c) āĻĒā§āϰāĻŋāύā§āĻāĻžāϰ (Printer)
- d) āϏā§āĻā§āϝāĻžāύāĻžāϰ (Scanner)
(What type of cable is generally meant by âLAN cableâ?)
- a) āĻ āĻĒāĻāĻŋāĻā§āϝāĻžāϞ āĻĢāĻžāĻāĻŦāĻžāϰ (Optical fiber)
- b) āĻā§āĻāϏā§āĻā§āĻĄ āĻĒā§āϝāĻŧāĻžāϰ (UTP/STP) āĻā§āĻŦāϞ (Twisted pair UTP/STP cable)
- c) āĻā§āĻāĻā§āϏāĻŋāϝāĻŧāĻžāϞ āĻā§āĻŦāϞ (Coaxial cable)
- d) āĻĒāĻžāĻāϝāĻŧāĻžāϰ āĻā§āĻŦāϞ (Power cable)
(What is the role of a server in a network?)
- a) āĻļā§āϧ⧠āĻĒā§āϰāĻŋāύā§āĻ āĻāϰāĻž (Only printing)
- b) āĻā§āϞāĻžāϝāĻŧā§āύā§āĻāĻĻā§āϰ āĻāύā§āϝ āĻĄā§āĻāĻž āĻ āϏāĻžāϰā§āĻāĻŋāϏ āĻĒā§āϰāĻĻāĻžāύ āĻāϰāĻž (Providing data and services to clients)
- c) āĻļā§āϧ⧠āĻā§āĻŦāϞā§āϰ āϞāϏ āĻŽāĻžāĻĒāĻž (Only measuring cable loss)
- d) āĻļā§āϧ⧠āĻŦāĻŋāĻĻā§āϝā§ā§ āϏāϰāĻŦāϰāĻžāĻš āĻāϰāĻž (Only supplying power)
(Which is a good method to improve data security in a network?)
- a) āĻāĻāĻ āĻĒāĻžāϏāĻāϝāĻŧāĻžāϰā§āĻĄ āϏāĻŦ āĻāĻžāϝāĻŧāĻāĻžāϝāĻŧ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻž (Use same password everywhere)
- b) āĻ ā§āϝāĻžāύā§āĻāĻŋāĻāĻžāĻāϰāĻžāϏ āĻ āĻāĻĒāĻĄā§āĻā§āĻĄ āϏāĻĢāĻāĻāϝāĻŧā§āϝāĻžāϰ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻž (Use antivirus and updated software)
- c) āĻĒāĻžāϏāĻāϝāĻŧāĻžāϰā§āĻĄ āϞāĻŋāĻā§ āĻŽāύāĻŋāĻāϰ⧠āϞāĻžāĻāĻŋāϝāĻŧā§ āϰāĻžāĻāĻž (Stick password on monitor)
- d) āĻĒāĻžāϏāĻāϝāĻŧāĻžāϰā§āĻĄ āύāĻž āϰāĻžāĻāĻž (Keep no password)
(What should be done to reduce trip hazards during office cabling?)
- a) āĻŽā§āĻā§āϤ⧠āĻĸāĻŋāϞ⧠āĻā§āĻŦāϞ āϰā§āĻā§ āĻĻā§āĻāϝāĻŧāĻž (Leave loose cables on floor)
- b) āĻā§āĻŦāϞ āĻā§āϰā§/āĻĄāĻžāĻā§āĻ āĻ āĻāĻāĻžāϰ āĻŦā§āϝāĻŦāĻšāĻžāϰ āĻāϰāĻž (Use cable trays/ducts and covers)
- c) āĻā§āĻŦāϞ āĻā§āϝāĻŧāĻžāϰā§āϰ āύāĻŋāĻ āĻĻāĻŋāϝāĻŧā§ āύā§āĻāϝāĻŧāĻž (Route under chairs loosely)
- d) āĻĻāϰāĻāĻžāϰ āĻŽāĻžāĻāĻāĻžāύ⧠āĻā§āĻŦāϞ āϰāĻžāĻāĻž (Keep cable in doorway)
(What is an MSDS â Material Safety Data Sheet?)
- a) āĻĒā§āϰāĻā§āĻā§āĻ āĻāϰāĻā§āϰ āϤāĻžāϞāĻŋāĻāĻž (Project cost sheet)
- b) āĻā§āĻŽāĻŋāĻā§āϝāĻžāϞā§āϰ āϏā§āĻĢāĻāĻŋ āĻ āĻšā§āϝāĻžāύā§āĻĄāϞāĻŋāĻ āϤāĻĨā§āϝā§āϰ āύāĻĨāĻŋ (Document with chemical safety and handling info)
- c) āĻā§āĻŦāϞ āϞā§āĻāĻĨ āĻāĻžāϰā§āĻ (Cable length chart)
- d) āĻļā§āϰāĻŽāĻŋāĻāĻĻā§āϰ āĻāĻĒāϏā§āĻĨāĻŋāϤāĻŋ āϰā§āĻāĻŋāϏā§āĻāĻžāϰ (Attendance register)
(Why is a toolbox talk done before starting work?)
- a) āĻļā§āϧ⧠āĻāϞā§āĻĒ āĻāϰāĻžāϰ āĻāύā§āϝ (Just to chat)
- b) āĻĻāĻŋāύā§āϰ āĻāĻžāĻ, āĻā§āĻāĻāĻŋ āĻ āϏā§āĻĢāĻāĻŋ āύāĻŋāϝāĻŧāĻŽ āĻāĻāϏāĻžāĻĨā§ āĻāϞā§āĻāύāĻž āĻāϰāĻžāϰ āĻāύā§āϝ (To discuss work, risks and safety rules for the day)
- c) āĻŦā§āϤāύ āύāĻŋāϰā§āϧāĻžāϰāĻŖā§āϰ āĻāύā§āϝ (To decide salaries)
- d) āĻāĻžāĻŦāĻžāϰā§āϰ āĻŽā§āύ⧠āĻ āĻŋāĻ āĻāϰāĻžāϰ āĻāύā§āϝ (To decide food menu)
(What does âbandwidthâ mean in a network?)
- a) āĻā§āĻŦāϞā§āϰ āĻāĻāύ (Cable weight)
- b) āύāĻŋāϰā§āĻĻāĻŋāώā§āĻ āϏāĻŽāϝāĻŧā§ āϏāϰā§āĻŦā§āĻā§āĻ āĻĄā§āĻāĻž āĻā§āϰāĻžāύā§āϏāĻĢāĻžāϰ āĻā§āώāĻŽāϤāĻž (Maximum data transfer capacity per time)
- c) āĻā§āĻŦāϞā§āϰ āϰāĻ āϏāĻāĻā§āϝāĻž (Number of colours on cable)
- d) āĻŦā§āϤāύā§āϰ āĻĒāϰāĻŋāĻŽāĻžāύ (Amount of salary)
(How does a âphishingâ attack usually happen?)
- a) āĻā§āĻŦāϞā§āϰ āĻŽāĻžāϧā§āϝāĻŽā§ (Through physical cable)
- b) āĻā§āϝāĻŧāĻž āĻāĻŽā§āĻāϞ/āĻāϝāĻŧā§āĻŦāϏāĻžāĻāĻ āĻĻāĻŋāϝāĻŧā§ āĻŦā§āϝāĻŦāĻšāĻžāϰāĻāĻžāϰā§āϰ āϤāĻĨā§āϝ āĻšāĻžāϤ⧠āύā§āĻāϝāĻŧāĻž (Fake emails/websites to steal user info)
- c) āĻĄā§āϰāĻžāĻŽ āĻā§āϰāĻžāύā§āϰ āϏāĻŽāϝāĻŧ (While rolling drums)
- d) āĻĢāĻžāĻāĻŦāĻžāϰ āϏā§āĻĒā§āϞāĻžāĻāϏā§āϰ āĻŽāĻžāϧā§āϝāĻŽā§ (Through fiber splice)
(If a sudden fire occurs, what should be done first?)
- a) āϏāĻŦāĻžāĻāĻā§ āĻāĻŦāϰ āύāĻž āĻĻāĻŋāϝāĻŧā§ āĻāĻžāĻ āĻāĻžāϞāĻŋāϝāĻŧā§ āϝāĻžāĻāϝāĻŧāĻž (Continue work without informing)
- b) āĻ ā§āϝāĻžāϞāĻžāϰā§āĻŽ āĻŦāĻžāĻāĻžāύ⧠āĻ āĻŽāĻžāύā§āώāĻā§ āύāĻŋāϰāĻžāĻĒāĻĻ āϏā§āĻĨāĻžāύ⧠āĻĒāĻžāĻ āĻžāύ⧠(Raise alarm and move people to safety)
- c) āĻāĻŦāĻŋ āϤā§āϞāĻž (Take photos)
- d) āĻĄā§āϰāĻžāĻŽ āϞā§āĻāĻŋāϝāĻŧā§ āϰāĻžāĻāĻž (Hide the drum)
(What is a good ergonomic practice when working long hours on a computer?)
- a) āĻāĻāĻāĻžāύāĻž āĻŦāϏ⧠āĻĨāĻžāĻāĻž (Sit continuously without break)
- b) āĻĒāϰā§āϝāĻžāϝāĻŧāĻā§āϰāĻŽā§ āĻŦāĻŋāϰāϤāĻŋ āύā§āĻāϝāĻŧāĻž āĻ āϏāĻ āĻŋāĻ āĻāĻā§āĻāĻŋāϤ⧠āĻŦāϏāĻž (Take periodic breaks and maintain proper posture)
- c) āĻā§āϝāĻŧāĻžāϰ āĻāĻžāĻĄāĻŧāĻž āĻĻāĻžāĻāĻĄāĻŧāĻŋāϝāĻŧā§ āĻĨāĻžāĻāĻž (Stand all the time)
- d) āĻ āύā§āϧāĻāĻžāϰ āĻāϰ⧠āĻāĻžāĻ āĻāϰāĻž (Work in a dark room)
Answer Key â 100 MCQs (Set 2)
Unit 1: Fiber Optic Communication and Route Inspection (Q1âQ20)
1. c
2. c
3. c
4. d
5. b
6. c
7. a
8. b
9. c
10. b
11. b
12. b
13. c
14. a
15. b
16. c
17. d
18. b
19. b
20. c
Unit 2: Splicing Tools and Process (Q1âQ20)
1. b
2. a
3. b
4. b
5. b
6. b
7. b
8. b
9. a
10. a
11. b
12. b
13. b
14. b
15. b
16. d
17. a
18. a
19. b
20. c
Unit 3: Cable Laying and Installation (Q1âQ20)
1. c
2. b
3. c
4. b
5. b
6. b
7. b
8. b
9. b
10. b
11. b
12. b
13. b
14. b
15. b
16. b
17. b
18. c
19. b
20. b
Unit 4: Testing Installation of OFC (Q1âQ20)
1. a
2. b
3. b
4. b
5. b
6. b
7. b
8. b
9. d
10. b
11. a
12. b
13. c
14. b
15. b
16. b
17. b
18. b
19. b
20. b
Unit 5: Health & Safety Measures and Networking (Q1âQ20)
1. b
2. b
3. b
4. b
5. b
6. b
7. b
8. b
9. b
10. b
11. b
12. b
13. b
14. b
15. b
16. b
17. b
18. b
19. b
20. b
Fill IN THE BLANKS and True/False
Unit 1: Fiber Optic Communication and Route Inspection â Fill in the Blanks (10 Ã 1 = 10)
(The core of an optical fiber is usually made of ______ material.)
(The outer covering that protects the fiber cable from environmental and mechanical damage is called the ______.)
(Information in optical fiber is mainly transmitted in the form of ______ waves.)
(The device at the transmitting end that converts electrical signals into light is called a/an ______.)
(The main principle of reflection of light in optical fiber is ______ internal reflection.)
(For long-distance telecom links, usually ______-mode fiber is used.)
(Loss of power in a fiber link is usually expressed in ______ per kilometer.)
(One of the commonly used wavelength windows in fiber telecom systems is ______ nanometer (third window).)
(During route inspection, the design of the entire cable path for future reference is called a ______ map.)
(The colored tape placed in the soil above underground cables for warning is called ______ tape.)
Unit 1: Fiber Optic Communication and Route Inspection â True/False (10 Ã 1 = 10)
(Optical fiber is highly affected by electromagnetic interference (EMI). (True / False))
(The refractive index of the fiber core is higher than that of the cladding. (True / False))
(In multimode fiber, light travels through more than one mode or path. (True / False))
(Single-mode fiber is generally used for short LAN links and multimode fiber for submarine cables. (True / False))
(During route inspection, it is necessary to note road crossings, rail crossings, rivers, etc. (True / False))
(While planning an OFC route, possible future network expansion must also be considered. (True / False))
(Fiber link budget never considers connector and splice losses. (True / False))
(Optical fiber cable can be lighter and have a smaller diameter than copper cable. (True / False))
(Route markers help to easily identify underground cable paths. (True / False))
(The light used in optical fiber is generally in the visible band, not in the infrared band. (True / False))
Unit 2: Splicing Tools and Process â Fill in the Blanks (10 Ã 1 = 10)
(The process of joining two fibers using an electric arc is called ______ splicing.)
(The tool used to remove the plastic coating before cutting the fiber is called a fiber ______.)
(The equipment used to cut the fiber end flat and perpendicular before splicing is called a ______.)
(The tube used to protect a fusion splice joint is called a ______ sleeve.)
(In mechanical splicing, a holding ______ or sleeve is used to align the fibers properly.)
(During splicing, fibers are usually cleaned using ______ alcohol and lint-free tissue.)
(The process of splicing multiple ribbon fibers at once is called ______ splicing.)
(After splicing, the fiber joints are usually arranged neatly in a ______ tray.)
(The record that notes the loss and core number of each splice point is called a splicing ______.)
(Before installing the splice closure, the extra cable length kept inside as a loop is called a ______ loop.)
Unit 2: Splicing Tools and Process â True/False (10 Ã 1 = 10)
(Fusion splice generally gives lower loss than mechanical splice. (True / False))
(If the fiber is randomly cut at an angle during cleaving, splice loss decreases. (True / False))
(If dust and dirt on the fiber are not cleaned before splicing, splice quality is not affected. (True / False))
(If the fusion splicer electrodes are very dirty or old, the arc remains stable. (True / False))
(If the protection sleeve is not heat-shrunk properly, the fiber joint may break under mechanical stress. (True / False))
(The splicing log sheet helps in future fault locating and maintenance. (True / False))
(Keeping fibers in very small bend radius in a splice tray causes no problem. (True / False))
(Mechanical splices are generally used more for temporary or emergency work. (True / False))
(If small pieces of fiber are not disposed of properly at the splicing site, health risks may arise. (True / False))
(Fusion splicing is used only for copper cables. (True / False))
Unit 3: Cable Laying and Installation â Fill in the Blanks (10 Ã 1 = 10)
(At the bottom of an underground OFC trench, ______ is usually laid to support the cable softly.)
(To reduce friction while pulling OFC cable, ______ is used.)
(The drawing that shows cable route crossings, manholes, joints etc. is called âas-______ drawingâ.)
(The markings on a cable drum that show total length and cutting lengths are called ______ markings.)
(The portion where the cable rises from the trench to enter a building or premises is called the cable ______.)
(The fully dielectric self-supporting cable used for aerial installation is called ______ cable.)
(When the cable is routed above ground along poles, it is called ______ installation.)
(The plastic ribbon with warning text placed above the cable in the trench is called ______ tape.)
(The loop made with extra cable length for future work convenience is called a ______ loop.)
(The process of taking permission from local authorities before installing OFC underground is called ______-of-way permission.)
Unit 3: Cable Laying and Installation â True/False (10 Ã 1 = 10)
(The shallower the cable trench, the safer the cable is. (True / False))
(It is dangerous to pull the cable over sharp stones during cable laying. (True / False))
(In cable blowing method, the cable mainly moves inside the duct by air pressure. (True / False))
(If the cable drum is not rotated in the correct direction, the cable may twist and get damaged. (True / False))
(At river or major drain crossings, OFC is often routed using the bridge structure. (True / False))
(Updating the cable route map after installation is not important. (True / False))
(Armored cable provides extra protection against mechanical damage. (True / False))
(If traffic management is not proper during cable laying, accident risk increases. (True / False))
(Danger tape is always placed directly below the cable. (True / False))
(While installing aerial OFC lines, proper overhead clearance must be maintained. (True / False))
Unit 4: Testing Installation of OFC â Fill in the Blanks (10 Ã 1 = 10)
(For insertion loss testing, an optical ______ meter and light source are generally used.)
(The full form of OTDR is Optical Time ______ Reflectometer.)
(To properly measure the near-end connector and events on OTDR, a ______ fiber is used.)
(To see far-end events clearly in OTDR testing, a ______ fiber can be added at the far end.)
(Optical power is usually measured in ______ units.)
(For detecting fiber breaks or severe loss, the ______ instrument is very effective.)
(Before insertion loss testing, a ______ link is set as 0 dB to establish reference.)
(A simple tool to check if light is passing through a fiber is ______ (VFL).)
(The process of keeping test data for future analysis is called data ______.)
(In installation test reports, the result of each link is usually mentioned as ______ / Fail.)
Unit 4: Testing Installation of OFC â True/False (10 Ã 1 = 10)
(Warm-up time is not needed for test instruments before installation testing. (True / False))
(If fiber connectors are dirty, the insertion loss usually gets worse. (True / False))
(A sudden steep drop in the OTDR trace may indicate a fiber break. (True / False))
(Testing only from one side with OTDR always gives the exact average loss. (True / False))
(-15 dBm on an optical power meter indicates higher power than -30 dBm. (True / False))
(The higher the dynamic range of an OTDR, the easier it is to see longer distances and smaller events. (True / False))
(If labeling is not done properly during installation tests, future fault tracing may become difficult. (True / False))
(There is no need to store test reports because tests can be redone every time. (True / False))
(If someone steps hard on the fiber during testing, temporary bend loss may increase. (True / False))
(Following safety rules during installation testing is just a formality and not really needed. (True / False))
Unit 5: Health & Safety Measures and Networking â Fill in the Blanks (10 Ã 1 = 10)
(While cutting and stripping fibers, ______ goggles should be used to protect the eyes.)
(Before working inside a trench, a ______ check is required for ventilation and gas.)
(While working at heights, a ______ harness is used to prevent falls.)
(The numerical address used to identify each device in a network is called an ______ address.)
(To prevent unauthorized access in a network, a system called a ______ is used.)
(For providing wireless internet signal at office or home, a ______ router is generally used.)
(Data transfer capacity in a network is usually expressed in ______ (Mbps) units.)
(For safe computing, strong ______ and regularly updated antivirus are essential.)
(To know safe use, storage and hazards of a chemical, the ______ sheet is referred to.)
(While working long hours at a computer, proper posture and periodic ______ are necessary.)
Unit 5: Health & Safety Measures and Networking â True/False (10 Ã 1 = 10)
(Small fiber splinters in skin or eyes pose no health risk. (True / False))
(Using warning boards and safety cones while working near roads reduces the chance of accidents. (True / False))
(In a network, a server provides various services and data to client computers. (True / False))
(Using the same password everywhere is a very safe method for data security. (True / False))
(In a phishing attack, fake emails or websites are used to steal personal information. (True / False))
(Leaving LAN cables scattered loosely on the floor increases trip hazards. (True / False))
(The higher the bandwidth, the more data can be sent per second in a network. (True / False))
(A firewall helps to filter unauthorized traffic in a network. (True / False))
(In case of fire, the first step is to raise an alarm and move everyone to a safe place. (True / False))
(When working long hours on a computer, taking no breaks is good ergonomic practice. (True / False))
Answer Key â Fill in the Blanks (Q1â10, 21â30, 41â50, 61â70, 81â90)
Unit 1 â Fill in the Blanks
1. āĻāĻžāĻāĻ (Glass)
2. āĻā§āϝāĻžāĻā§āĻ / āĻļā§āĻĨ (Jacket / Sheath)
3. āĻāϞ⧠(Light)
4. āĻ
āĻĒāĻāĻŋāĻā§āϝāĻžāϞ āĻā§āϰāĻžāύā§āϏāĻŽāĻŋāĻāĻžāϰ / āĻā§āϰāĻžāύā§āϏāĻŽāĻŋāĻāĻžāϰ (Optical transmitter / transmitter)
5. Total (āĻĒā§āϰā§āĻŖ) internal reflection
6. Single (āϏāĻŋāĻā§āĻā§āϞ)
7. dB (āĻĄā§āϏāĻŋāĻŦā§āϞ) / dB per km
8. 1550 āύā§āϝāĻžāύā§āĻŽāĻŋāĻāĻžāϰ (1550 nm)
9. āϰā§āĻ (Route) āĻŽā§āϝāĻžāĻĒ / āĻā§āĻŦāϞ āϰā§āĻ āĻŽā§āϝāĻžāĻĒ
10. āĻĄā§āĻā§āĻāĻžāϰ / āĻāϝāĻŧāĻžāϰā§āύāĻŋāĻ āĻā§āĻĒ (Danger / warning tape)
Unit 2 â Fill in the Blanks
21. āĻĢāĻŋāĻāĻļāύ (Fusion)
22. āĻĢāĻžāĻāĻŦāĻžāϰ (Fiber) āϏā§āĻā§āϰāĻŋāĻĒāĻžāϰ
23. āĻā§āϞāĻŋāĻāĻžāϰ (Cleaver)
24. āĻĒā§āϰā§āĻā§āĻāĻļāύ (Protection) āϏā§āϞāĻŋāĻ / āĻšāĻŋāĻ-āĻļā§āϰāĻŋāĻāĻ āϏā§āϞāĻŋāĻ
25. āĻ
ā§āϝāĻžāϞāĻžāĻāύāĻŽā§āύā§āĻ (Alignment) āĻŦā§āϞāĻ / āϏā§āϞāĻŋāĻ
26. āĻāĻāϏā§āĻĒā§āϰā§āĻĒāĻžāĻāϞ (Isopropyl) āĻ
ā§āϝāĻžāϞāĻā§āĻšāϞ
27. āĻŽāĻžāϏ (Mass) / āϰāĻŋāĻŦāύ (Ribbon) āϏā§āĻĒā§āϞāĻžāĻāϏāĻŋāĻ
28. āϏā§āĻĒā§āϞāĻžāĻāϏ (Splice) āĻā§āϰā§
29. āϞāĻ (Log) / āϞāĻ āĻļāĻŋāĻ (Log sheet)
30. āϏāĻžāϰā§āĻāĻŋāϏ (Service) āϞā§āĻĒ
Unit 3 â Fill in the Blanks
41. āĻŦāĻžāϞāĻŋ / āύāϰāĻŽ āĻŦāĻžāϞāĻŋ (Sand / soft sand)
42. āϞā§āĻŦā§āϰāĻŋāĻā§āύā§āĻ (Lubricant)
43. As-built (āĻ
ā§āϝāĻžāĻ-āĻŦāĻŋāϞā§āĻ)
44. āϞā§āĻāĻĨ (Length) āĻŽāĻžāϰā§āĻāĻŋāĻ / āĻāĻžāĻāĻŋāĻ āϞā§āĻāĻĨ āĻŽāĻžāϰā§āĻāĻŋāĻ
45. āϰāĻžāĻāĻāĻžāϰ (Riser) / āĻā§āĻŦāϞ āϰāĻžāĻāĻāĻžāϰ
46. ADSS (All-Dielectric Self-Supporting)
47. āĻāϝāĻŧāĻžāϰāĻŋāϝāĻŧāĻžāϞ (Aerial) / āĻāĻāĻžāϰāĻšā§āĻĄ āĻāύāϏā§āĻāϞā§āĻļāύ
48. āĻĄā§āĻā§āĻāĻžāϰ / āĻāϝāĻŧāĻžāϰā§āύāĻŋāĻ āĻā§āĻĒ (Danger / warning tape)
49. āϏāĻžāϰā§āĻāĻŋāϏ (Service) āϞā§āĻĒ
50. Right-of-way (āϰāĻžāĻāĻ-of-way)
Unit 4 â Fill in the Blanks
61. āĻĒāĻžāĻāϝāĻŧāĻžāϰ (Power) āĻŽāĻŋāĻāĻžāϰ
62. Domain (āĻĄā§āĻŽā§āĻāύ)
63. āϞāĻā§āĻ (Launch) āĻĢāĻžāĻāĻŦāĻžāϰ
64. āϰāĻŋāϏāĻŋāĻ (Receive) āĻĢāĻžāĻāĻŦāĻžāϰ
65. dBm
66. OTDR (āĻāĻāĻŋāĻĄāĻŋāĻāϰ)
67. āϰā§āĻĢāĻžāϰā§āύā§āϏ / āĻāĻžāϞ⧠(good) āϞāĻŋāĻā§āĻ
68. āĻāĻŋāĻā§āϝāĻŧāĻžāϞ āĻĢāϞā§āĻ āϞā§āĻā§āĻāϰ (Visual Fault Locator)
69. āϏā§āĻā§āϰā§āĻ (Storage) / āϏā§āĻ (Save)
70. Pass (āĻĒāĻžāϏ)
Unit 5 â Fill in the Blanks
81. āϏā§āĻĢāĻāĻŋ (Safety) āĻāĻāϞāϏ
82. āĻā§āϝāĻžāϏ / āĻŦāĻžāϝāĻŧā§ (Gas / air) āĻā§āϏā§āĻ
83. āϏā§āĻĢāĻāĻŋ (Safety) āĻšāĻžāϰāύā§āϏ
84. IP (āĻāĻāĻĒāĻŋ) āĻ
ā§āϝāĻžāĻĄā§āϰā§āϏ
85. āĻĢāĻžāϝāĻŧāĻžāϰāĻāϝāĻŧāĻžāϞ (Firewall)
86. āĻāϝāĻŧāĻžāĻ-āĻĢāĻžāĻ (Wi-Fi) / āĻāϝāĻŧāĻžāϰāϞā§āϏ āϰāĻžāĻāĻāĻžāϰ
87. āĻŽā§āĻāĻžāĻŦāĻŋāĻāϏ āĻĒāĻžāϰ āϏā§āĻā§āύā§āĻĄ (Megabits per second)
88. āĻĒāĻžāϏāĻāϝāĻŧāĻžāϰā§āĻĄ (Password)
89. MSDS (Material Safety Data Sheet)
90. āĻŦāĻŋāϰāϤāĻŋ (Breaks)
Answer Key â True/False (Q11â20, 31â40, 51â60, 71â80, 91â100)
Unit 1 â True/False
11. āĻŽāĻŋāĻĨā§āϝāĻž (False)
12. āϏāϤā§āϝ (True)
13. āϏāϤā§āϝ (True)
14. āĻŽāĻŋāĻĨā§āϝāĻž (False)
15. āϏāϤā§āϝ (True)
16. āϏāϤā§āϝ (True)
17. āĻŽāĻŋāĻĨā§āϝāĻž (False)
18. āϏāϤā§āϝ (True)
19. āϏāϤā§āϝ (True)
20. āĻŽāĻŋāĻĨā§āϝāĻž (False)
Unit 2 â True/False
31. āϏāϤā§āϝ (True)
32. āĻŽāĻŋāĻĨā§āϝāĻž (False)
33. āĻŽāĻŋāĻĨā§āϝāĻž (False)
34. āĻŽāĻŋāĻĨā§āϝāĻž (False)
35. āϏāϤā§āϝ (True)
36. āϏāϤā§āϝ (True)
37. āĻŽāĻŋāĻĨā§āϝāĻž (False)
38. āϏāϤā§āϝ (True)
39. āϏāϤā§āϝ (True)
40. āĻŽāĻŋāĻĨā§āϝāĻž (False)
Unit 3 â True/False
51. āĻŽāĻŋāĻĨā§āϝāĻž (False)
52. āϏāϤā§āϝ (True)
53. āϏāϤā§āϝ (True)
54. āϏāϤā§āϝ (True)
55. āϏāϤā§āϝ (True)
56. āĻŽāĻŋāĻĨā§āϝāĻž (False)
57. āϏāϤā§āϝ (True)
58. āϏāϤā§āϝ (True)
59. āĻŽāĻŋāĻĨā§āϝāĻž (False)
60. āϏāϤā§āϝ (True)
Unit 4 â True/False
71. āĻŽāĻŋāĻĨā§āϝāĻž (False)
72. āϏāϤā§āϝ (True)
73. āϏāϤā§āϝ (True)
74. āĻŽāĻŋāĻĨā§āϝāĻž (False)
75. āϏāϤā§āϝ (True)
76. āϏāϤā§āϝ (True)
77. āϏāϤā§āϝ (True)
78. āĻŽāĻŋāĻĨā§āϝāĻž (False)
79. āϏāϤā§āϝ (True)
80. āĻŽāĻŋāĻĨā§āϝāĻž (False)
Unit 5 â True/False
91. āĻŽāĻŋāĻĨā§āϝāĻž (False)
92. āϏāϤā§āϝ (True)
93. āϏāϤā§āϝ (True)
94. āĻŽāĻŋāĻĨā§āϝāĻž (False)
95. āϏāϤā§āϝ (True)
96. āϏāϤā§āϝ (True)
97. āϏāϤā§āϝ (True)
98. āϏāϤā§āϝ (True)
99. āϏāϤā§āϝ (True)
100. āĻŽāĻŋāĻĨā§āϝāĻž (False)
- optical fiber splicing questions and answers
- fiber optic communication MCQ class 10
- OFC cable laying and installation MCQ
- OTDR testing questions and answers
- optical fiber health and safety MCQ
- telecom optical fiber splicing class 10
Optical Fiber Splicer QA | Class 10 MCQ, OFC, Splicing, Testing & Safety
Class 10 Optical Fiber Splicer QA set with MCQs on fiber optic communication, splicing tools, OFC installation, OTDR testing, health & safety and basic networking.
Made by Biswarup Santra( M.Tech in ECE)
