Classical

Computer Networks - Data Communication & Network Security

56:  

Adaptive or dynamic directory used in packet routing changes

A.

within each user session

B.

with each user session

C.

at system generation time only

D.

none of these

 
 

Option: A

Explanation :

Click on Discuss to view users comments.

Write your comments here:



57:  

Differential Manchester code for the given figure is 

manchester code

A.

111100101

B.

100010111

C.

101001111

D.

101001101

 
 

Option: B

Explanation :

Click on Discuss to view users comments.

ErTheSun said: (6:14am on Saturday 27th August 2016)
Answer would not be given in question itself.. Morover it is based on change in bit value.. when value is changed at that time the output changed.

Write your comments here:



58:  

Maximum data rate of a channel of 3000 Hz bandwidth and SNR of 30 dB is

A.

75,000 bps

B.

60,000 bps

C.

30,000 bps

D.

3,000 bps

 
 

Option: C

Explanation :

Maximum number of bps = Hlog2 (1 + SNR).

Click on Discuss to view users comments.

Write your comments here:



59:  

Minimum number of bits required to represent B is

A.

1

B.

2

C.

3

D.

4

 
 

Option: C

Explanation :

Click on Discuss to view users comments.

Write your comments here:



60:  

A 3000 Hz bandwidth noisy channel transmits bits with a signal to thermal noise ratio of 30 dB. What is the maximum data rate of the channel ?

A.

30 kbps

B.

00 kbps

C.

60 kbps

D.

none of these

 
 

Option: A

Explanation :

Click on Discuss to view users comments.

Write your comments here:







Suggest an improvement