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Digital Communication MCQ Questions And Answers

Digital Communications MCQs : Here you will find MCQ Questions related to Digital Communication. These MCQ Questions Will help you to improve your Digital Communication knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations.




Question 1

Digital communication is _________ sensitive to environmental changes like temperature etc.

A. more
B. less
C. equal
D. None of the above

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Question 2

Advantages of digital communication are

A. Easy multiplexing
B. Easy processing
C. Reliable
D. All of the above

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Question 3

__________________ is necessary for digital communication. This is considered as a disadvantage of digital communication.

A. Precision timing
B. Frame synchronization
C. Character synchronization
D. All of the above

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Question 4

Digital communication needs _____________ bandwidth occurs during analog to digital conversion and vice versa.

A. more
B. less
C. equal
D. Can not say

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Question 5

The measure of frequencies outside which spectrum is zero is called as?

A. relative bandwidth
B. absolute bandwidth
C. normalized bandwidth
D. null to null bandwidth

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Question 6

The attenuation level in bounded power spectral density is?

A. 35
B. 50
C. Both A and B
D. 45

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Question 7

Analog to digital conversion is a two step process which includes?

A. sampling
B. quantization
C. Both A and B
D. Can not say

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Question 8

Information source comes from a higher networking layer. It can be continuous or packetized.

A. TRUE
B. FALSE
C. Can be true or false
D. Can not say

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Question 9

Matched filter technique is a demodulation process used to?

A. Increase SNR
B. Decrease SNR
C. SNR is not affected
D. Can not say

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Question 10

Which of the following is true?

A. Wired channels are lossy channels.
B. Interpolator corrects the sampling time problem using discrete time processing.
C. Matched filter can also be used as least squares estimator.
D. All of the above

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