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# Consider the discussion in Section 1.3 of packet switching versus circuitswitching in

ISBN: 9780132856201 374

## Solution for problem P9 Chapter 1

Computer Networking: A Top-Down Approach | 6th Edition

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Problem P9

Consider the discussion in Section 1.3 of packet switching versus circuitswitching in which an example is provided with a 1 Mbps link. Users aregenerating data at a rate of 100 kbps when busy, but are busy generatingdata only with probability p = 0.1. Suppose that the 1 Mbps link is replacedby a 1 Gbps link.a. What is N, the maximum number of users that can be supportedsimultaneously under circuit switching?b. Now consider packet switching and a user population of M users. Give aformula (in terms of p, M, N) for the probability that more than N users aresending data.

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­last resort, use else statement. Cannot put anything after the “else” expression or it won’t read it ­only “if” and “end” are needed ­ the “elseif” and and “else” are not NEEDED >> %Day 7 MATLAB examples >> a=10;b=15;c=20; >> x=a> y=a>c||b> %one means yes, zero means no >> z=a>c&&b> %these are 3 logical operators >>...

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