Digital Communication Questions and Answers, Set 6

Digital Communication Questions and Answers

Q1. 

Transmission media used for medium frequency band are

Answer : 

Copper cable

Q2. 

Digital communication is ____ to environmental changes?

Answer : 

Less sensitive

Q3. 

Which system uses digital transmission?

Answer : 

ISDN & LANs

Q4. 

Analog to digital conversion includes

Answer : 

Sampling & Quantization

Q5. 

Thermal noise is

Answer : 

Power signal

Q6. 

Which consists of less ISI?

Answer : 

Raised cosine filter

Q7. 

Shot noise is produced by

Answer : 

Electrons & Photons

Q8. 

Which has the same power spectral density?

Answer : 

White noise

Q9. 

For the number of bits, k=1 and number of symbols, M=2 the system is called as

Answer : 

Binary

Q10. 

What are the characteristics of an ideal transmission line?

Answer : 

1. Different amplitude

2. No distortion

3. Time delay

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