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Consider Figure 2 . 1 2 , for which there is an institutional network connected to the Internet. Suppose that the average object size is
Consider Figure for which there is an institutional network connected to the Internet. Suppose that
the average object size is bits and that the average request rate from the institution's browsers
to the origin servers is requests per second. Also suppose that the amount of time it takes from when
the router on the Internet side of the access link forwards an HTTP request until it receives the response is
three seconds on average see Section Model the total average response time as the sum of the
average access delay that is the delay from Internet router to institution router and the average Internet
delay. For the average access delay, use where is the average time required to send an object
over the access link and is the arrival rate of objects to the access link.
a Find the total average response time.
b Now suppose a cache is installed in the institutional LAN. Suppose the miss rate is Find the total
response time.
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