Bit-rate

Question 1
Assume that we need to download text documents at the rate of 100 pages per minute. A page is an average of 24 lines with 80 characters in each line and each character requires 8 bits. Then the required bit rate of the channel is _____.
A
1.636 Kbps
B
1.636 Mbps
C
3.272 Mbps
D
3.272 Kbps
E
None of the above
Computer-NetworksBit-rateUGC NET CS 2016 July- paper-3
Question 1 Explanation: 
-- Number of Pages(P)=100 per Minute

-- Number of Lines(L)= 24

-- Number of characters(C) =80

-- One character(O) =8 bits

-- Bit rate of channel=?

Step-1: Bit rate of channel= P*L*C*O

Question 2
A multiplexer combines four 100-Kbps channels using a time slot of 2 bits. What is the bit rate?
A
100 Kbps
B
200 Kbps
C
400 Kbps
D
1000 Kbps
Computer-NetworksBit-rateUGC NET CS 2016 July- paper-2
Question 2 Explanation: 
Frame duration= 1/50,000
= 20 sec
Frame size= No.of bits per frame
= 8 bits
Bit Rate= Frame Rate * No.of bits per frame
= 50000*8
= 400 kbps
There are 2 questions to complete.

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