Homework 4 problems and solutions

Homework 4 problems and solutions - Homework 4 solutions...

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Homework 4 solutions Chapter 2 R.13) Describe how Web caching can reduce the delay in receiving a requested object. Will Web caching reduce the delay for all objects requested by a user or for only some of the objects? Why? R.15) Why is it said that FTP sends control information “out-of-band”? R.21) Consider a new peer Alice that joins BitTorrent without possessing any chunks. Without any chunks, she cannot become a top-four uploader for any of the other peers, since she has nothing to upload. How then will Alice get her first chunk?
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P7) Suppose within your Web browser you click on a link to obtain a Web page. The IP address for the associated URL is not cached in your local host, so a DNS lookup is necessary to obtain the IP address. Suppose that n DNS servers are visited before your host receives the IP address from DNS; the successive visits incur an RTT of RTT 1 ,…, RTT n . Further suppose that the Web page associated with the link contains exactly one object, consisting of a small amount of HTML text. Let RTT
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This note was uploaded on 04/15/2010 for the course ECE 465 taught by Professor Paris,b during the Spring '08 term at George Mason.

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Homework 4 problems and solutions - Homework 4 solutions...

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