Computer Networks - Data Communication & Network Security

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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
	Answer Report Discuss
	Option: A Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

57:  

Differential Manchester code for the given figure is 

A.	111100101
B.	100010111
C.	101001111
D.	101001101
	Answer Report Discuss
	Option: B Explanation : Click on Discuss to view users comments. ErTheSun said: (8:14pm on Friday 26th 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: Updating your Comments.. Updating your Comments..

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
	Answer Report Discuss
	Option: C Explanation : Maximum number of bps = Hlog2 (1 + SNR). Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

59:  

Minimum number of bits required to represent B is

A.	1
B.	2
C.	3
D.	4
	Answer Report Discuss
	Option: C Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

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
	Answer Report Discuss
	Option: A Explanation : Click on Discuss to view users comments. Write your comments here: Updating your Comments.. Updating your Comments..

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