Assume you use your Web browser to access a Web page by clicking on a link. Because the IP address for the related URL is not cached on your local host, a DNS search is required to acquire it. Assume that n DNS servers are contacted before your host obtains the IP address from DNS; each subsequent visit incurs an RTT of RTT1,..., RTTn. Assume that the Web page connected with the link has only one item, which is a little bit of HTML text. Let RTT0 represent the RTT between the local host and the server that has the item. Assuming that the item has a zero transmission time, how much time elapses between when the client clicks on the link and when the client receives the object?

Assume you use your Web browser to access a Web page by clicking on a link. Because the IP address for the related URL is not cached on your local host, a DNS search is required to acquire it. Assume that n DNS servers are contacted before your host obtains the IP address from DNS; each subsequent visit incurs an RTT of RTT1,..., RTTn. Assume that the Web page connected with the link has only one item, which is a little bit of HTML text. Let RTT0 represent the RTT between the local host and the server that has the item. Assuming that the item has a zero transmission time, how much time elapses between when the client clicks on the link and when the client receives the object?

MIS

9th Edition

ISBN:9781337681919

Author:BIDGOLI

Publisher:BIDGOLI

Chapter7: The Internet, Intranets, And Extranets

Section: Chapter Questions

Problem 1RD

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Suppose within your Web browser you click on a link to obtain a Web page. The IP address for the associated URL isnot cached in your local host, so a DNS lookup is necessary to obtain the IP address. Suppose that n DNS servers arevisited before your host receives the IP address from DNS; the successive visits incur an RTT of RTT1, . . ., RTTn.Further suppose that the Web page associated with the link contains exactly one object, consisting of a small amount ofHTML text. Let RTT0 denote the RTT between the local host and the server containing the object. Assuming zerotransmission time of the object, how much time elapses from when the client clicks on the link until the client receivesthe object?
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