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Consider a webpage consisting of a base HTML file and 2 embeded GIF objects on the...

Consider a webpage consisting of a base HTML file and 2 embeded GIF objects on the same web server. The IP address for the server is initially not known to the client. Suppose that one DNS server in each class of DNS hierarchy should be visited before the client receives the IP address. Suppose the time needed to contact any (web or DNS) server and receive a response is RTT . How much time elapses from when the client clicks on the webpage link until its receives the webpage? The client’s browser uses non-persistent HTTP with no parallel TCP connections.

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Answer #1

Since the given connection is non-persistent HTTP and no parallel TCCP connections.

No of RTT required for one TCP connection- 1RTT

No of RTT required for one HTML base file - 1RTT

Total number of gifs - 2

No of RTT required for each gif - 2RTT

Time to transmit 2 Gifs = 2* 2 RTT = 4 RTT

Total time elapsed = time to transmit (1 TCP connection) + (1 HTML base file ) + 2 GIf

= 1RTT + 1RTT + 4 RTT

= 6 RTT

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