Question: HTTP question: Suppose a server S and client C are connected by an intermediate router X as follows: S- X-C. The capacities of the two

HTTP question:

Suppose a server S and client C are connected by an intermediate router X as follows: S- X-C. The capacities of the two interconnecting links SX and XC are us and dc, respectively, and us > dc. Each of the links has a (one-way) propagation delay dprop. A browser on client C makes an HTTP request for a webpage on server S. The base HTML file is of size F bits and it references six objects, each of size L bits.

(a) Ignoring the time required for DNS lookup, find the approximate total response time for the client to receive the entire webpage in the following cases of non-persistent HTTP with up to four parallel TCP connections. Assume that N parallel connections each get 1/N of the link bandwidth.

(b) Briefly discuss the impact of web caches on todays Internet.

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