Digital Communication Questions and Answers, Set 65

Digital Communication Questions and Answers

Q1. 

Which method has two way link?

Answer :   

Closed loop method

Q2. 

Which reduces the effective distance between signals in signal space?

Answer :   

Time error & Frequency offset

Q3. 

Which is more bandwidth efficient?

Answer :   

Time hopping spread spectrum

Q4. 

Frequency planning is very essential in

Answer :  

FDMA & TDMA

Q5. 

Which has lower noise immunity?

Answer :   

TDM

Q6. 

A mechanism for breaking the problem down is

Answer :  

Abstraction

Q7. 

Example of reservation system is

Answer :  

Synchronous TDM

Q8. 

Minimum packet size increases as

Answer :  

Speed & Distance increases

Q9. 

Which method is better when traffic is heavy?

Answer :  

SPADE & Binary tree search

Q10. 

Which technique needs precise synchronization?

Answer :   

TDMA

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