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You download a small HTML file that references 8 small objects (that is, ignore transmission times)....

You download a small HTML file that references 8 small objects (that is, ignore transmission times). All these 8 objects reside on the same server. One RTT is 300 ms. How much time does it take to download all 9 objects using persistent HTTP connection? Assume no pipelining. Give answer in seconds to one decimal digit.

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Answer #1

Persistent connection does not require connection setup again and again. Multiple objects can use same connection.

1 RTT = 300 ms
2RTT is the initial required one for TCP connection and one for HTML base file.
And for 8 objects it requires -> 8 RTT
Total time = 2 RTT + 8 RTT = 10 RTT

Total time = 10 *300 = 3000 ms = 3.0 seconds

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