Suppose within your web browser you click on a link to obtain aweb page. The IP address for the associated URL is not cached inyour local host, so a DNS look up is necessary to obtain the givenIP address. Further suppose that 3 DNS servers are visited beforeyour host receives the IP address form DNS. The round trip timebetween the client and the ithDNS server is Ti(1≤i≤3), and thatbetween the jthDNS server and the (j+1)thDNS server is tj(1≤j≤2).Further suppose that thepage contains four objects (including thewebpage) and that the web browser has to fetch the webpage (the.html file) before it knows 3 (other) image objects are containedin the webpage. Assume that it takes negligible time to transmitthe .html file (i.e., the transmission time for the file is zero),but Oitime is required to transmit the ithimage object. LetT0denote the propagation delay (i.e., RTT excluding transmissiontime) between the local host and the server containing theobjects.How much time elapses from the time instant when the clientclicks on the link until the time instant when the client receivesa complete webpage? Assume iterative DNS query service andpersistent HTTP with pipelining.
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Answer to Suppose within your web browser you click on a link to obtain a web page. The IP address for the associated URL is not c…