Fiber Optic Communication MCQs with Answers

adminApril 10, 2024

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Welcome to the Fiber Optic Communication MCQs with Answers. In this post, we have shared Fiber Optic Communication Online Test for different competitive exams. Find practice Fiber Optic Communication Practice Questions with answers in Physics Tests exams here. Each question offers a chance to enhance your knowledge regarding Fiber Optic Communication.

Fiber Optic Communication Online Quiz

By presenting 3 options to choose from, Fiber Optic Communication Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Fiber Optic Communication Questions and Answers and click over the correct answer.

Test Name: Fiber Optic Communication MCQ Quiz Practice
Type: Quiz Test
Total Questions: 40
Total Marks: 40
Time: 40 minutes

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Fiber Optic Communication

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1 / 40

What is the principle behind Fiber Optic Communication?

Diffraction

Interference

Total internal reflection

2 / 40

Which type of dispersion causes different wavelengths to travel at different speeds?

Chromatic dispersion

Modal dispersion

Material dispersion

3 / 40

What is the typical diameter of the core in single-mode fibers?

100-200 micrometers

8-10 micrometers

50-100 micrometers

4 / 40

Which type of optical fiber has a single core surrounded by cladding?

Single-mode

Multi-mode

Graded-index

5 / 40

Which parameter determines the bandwidth of an optical fiber?

Cladding thickness

Refractive index

Core diameter

6 / 40

Which type of dispersion is caused by variations in the refractive index of the core?

Chromatic dispersion

Material dispersion

Modal dispersion

7 / 40

Which component is used to couple light into a fiber optic cable?

Photodetector

Laser diode

Optical amplifier

8 / 40

Which type of optical fiber has a larger core diameter?

Graded-index

Multi-mode

Single-mode

9 / 40

What is the name of the process where light signals are converted into electrical signals?

Photonic conversion

Photodetection

Electroluminescence

10 / 40

What is the purpose of using graded-index fibers?

Increase bandwidth

Reduce modal dispersion

Enhance signal strength

11 / 40

What is the main disadvantage of multi-mode fibers compared to single-mode fibers?

Higher attenuation

Modal dispersion

Lower bandwidth

12 / 40

What is the function of dispersion compensating fibers in fiber optic communication?

Filter out noise

Increase signal strength

Reduce dispersion effects

13 / 40

Which type of dispersion can be minimized through the use of dispersion-shifted fibers?

Chromatic dispersion

Material dispersion

Modal dispersion

14 / 40

Who is credited with the invention of the optical fiber?

John Tyndall

Charles K. Kao

Narinder Singh Kapany

15 / 40

What is the function of the cladding in an optical fiber?

Increase flexibility

Protect the core

Reflect light back into the core

16 / 40

What is the refractive index of the cladding compared to the core in a step-index fiber?

Same

Higher

Lower

17 / 40

Which property of optical fibers allows them to transmit data over long distances?

Low cost

Low attenuation

High bandwidth

18 / 40

Which type of fiber optic cable is more resistant to bending and stretching?

Glass optical fiber

Polymer optical fiber

Plastic optical fiber

19 / 40

What is the primary cause of signal loss in optical fibers?

Absorption

Reflection

Scattering

20 / 40

What is the typical range of attenuation for optical fibers?

10-20 dB/km

0.2-0.5 dB/km

2-5 dB/km

21 / 40

What is the function of an optical isolator in fiber optic communication?

Prevents signal reflections

Boosts signal strength

Filters out noise

22 / 40

What is the name of the phenomenon where light leaks out of the fiber core due to imperfections?

Scattering

Leakage

Attenuation

23 / 40

What is the term for the spreading of light pulses as they travel through an optical fiber?

Attenuation

Dispersion

Reflection

24 / 40

What is the term for the process of encoding data onto light signals in fiber optic communication?

Demodulation

Multiplexing

Modulation

25 / 40

What is the term for the loss of signal strength in optical fibers?

Attenuation

Dispersion

Refraction

26 / 40

What is the primary advantage of single-mode fibers over multi-mode fibers?

Lower modal dispersion

Larger core diameter

Higher bandwidth

27 / 40

Which type of fiber optic cable is typically used for short-distance communication within buildings?

Multi-mode fiber

Plastic optical fiber

Single-mode fiber

28 / 40

What is the function of a fiber optic receiver?

Generate light signals

Amplify light signals

Convert light signals to electrical signals

29 / 40

What is the term for the phenomenon where light pulses spread out over distance due to different travel paths?

Modal dispersion

Polarization dispersion

Chromatic dispersion

30 / 40

What type of modulation is commonly used in fiber optic communication?

Amplitude modulation

Phase modulation

Frequency modulation

31 / 40

What is the purpose of using wavelength division multiplexing in fiber optic communication?

Enhance signal quality

Increase bandwidth

Reduce attenuation

32 / 40

Which optical component is used to combine multiple optical signals into a single fiber?

Optical amplifier

Optical isolator

Wavelength division multiplexer

33 / 40

What is the term for the bending of light rays as they pass through a medium?

Refraction

Reflection

Diffraction

34 / 40

What is the core material of most optical fibers?

Plastic

Metal

Glass

35 / 40

Which parameter determines the number of modes in a multi-mode optical fiber?

Cladding thickness

Core diameter

Refractive index

36 / 40

What is the primary advantage of fiber optic communication over copper wire?

Higher bandwidth

Lower cost

Easier installation

37 / 40

Which type of dispersion is caused by different propagation speeds of different modes?

Material dispersion

Modal dispersion

Chromatic dispersion

38 / 40

What is the function of a fiber optic transmitter?

Convert electrical signals to light signals

Convert light signals to electrical signals

Boost light signals

39 / 40

What is the typical operating wavelength range for fiber optic communication?

300-500 nm

1000-2000 nm

800-1600 nm

40 / 40

What is the function of the optical amplifier in fiber optic communication?

Boost signal strength

Filter out noise

Convert light to electricity

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adminApril 10, 2024

0 5 1 minute read