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# Consider Figure 1.19(a). Assume that we know the bottleneck link along thepath from the

ISBN: 9780132856201 374

## Solution for problem P23 Chapter 1

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

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Problem P23

Consider Figure 1.19(a). Assume that we know the bottleneck link along thepath from the server to the client is the first link with rate Rs bits/sec. Supposewe send a pair of packets back to back from the server to the client, and thereis no other traffic on this path. Assume each packet of size L bits, and bothlinks have the same propagation delay dprop.a. What is the packet inter-arrival time at the destination? That is, how muchtime elapses from when the last bit of the first packet arrives until the lastbit of the second packet arrives?b. Now assume that the second link is the bottleneck link (i.e., Rc < Rs). Is itpossible that the second packet queues at the input queue of the secondlink? Explain. Now suppose that the server sends the second packet T secondsafter sending the first packet. How large must T be to ensure noqueuing before the second link? Explain.

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Day 12 ­A while loop will only execute when the conditions are met ­Golden rule for while loops: your variable has to change within the loop ­First line is while(condition); last line is end ­If you are stuck in a loop, do Ctrl + C Write a code for how long it will take to pay back the...

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