June 12, 2021

Digital Communication Processing MCQ’s

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This set of Digital Communications Systems Multiple Choice Questions & Answers (MCQs) focuses on “Digital Communication Processing”.

1. What is the code rate?
a) k/n
b) n/k
c) All of the mentioned
d) None of the mentioned

2. The size of the alphabet M in symbol is calculated as?
a) 2(k+1)
b) 2k
c) 2(k-1)
d) 1+2k

3. How many bytes does a gigabyte have?
a) 1 million bytes
b) 10 million bytes
c) 1 billion bytes
d) 10 billion bytes

4. Source coding block is used for?
a) Compressing
b) Digitizing
c) A/D conversion
d) All of the mentioned

5. What is the ASCII value of space?
a) 32
b) 48
c) 96
d) 65

6. What are the advantages of digital circuits?
a) Less noise
b) Less interference
c) More flexible
d) All of the mentioned

7. Which measurement considers phase as an important parameter?
a) Coherent
b) Non-coherent
c) All of the mentioned
d) None of the mentioned

8. Which circuit is called as regenerative repeaters?
a) Analog circuits
b) Digital circuits
c) Amplifiers
d) A/D converters

9. Pulse shaping is done by which block or system?
a) Encoder
b) Baseband modulator
c) Pulse code modulator
d) Demodulator

10. Equalizer is used for?
a) Filtering
b) Diminish distortion
c) All of the mentioned
d) None of the mentioned

11. How many different combinations can be made from a n bit value?
a) 2(n+1)
b) 2(n)
c) 2(n)+1
d) None of the mentioned

12. Which block or device does the data compression?
a) Channel encoder
b) Source encoder
c) Modulator
d) None of the mentioned

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