Question Bank - Computer Networks

Here's the question bank on all the computer networks topics.

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In a communication network. 4 T1 streams are multiplexed to form 1 T2 stream and 7 T1 streams are multiplexed to form 1 T3 stream. Further 6 T3 streams are multiplexed to form 1 T4 stream. If each T1 stream is of 1.544 Mbps, the data rate of 1 T4 stream should be

A.
211.8 Mbps
B.
232.6 Mbps
C.
243.4 Mbps
D.
274.2 Mbps

Solution:

Given:T1 = 1.544 Mbps4T1 = 1T27T2 = 1T36T3 = 1T4T2 = 4T1 = 4 x 1.544T3 = 7T2 = 7 x 4 x 1.544T4 = 6T3 = 4 × 7 × 6 × 1.544? T4? 274.2 MbpsNote:The question statement is little wrong. It must be œ7T2 streams are multiplexed to form 1T3 stream.

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