P7. Suppose within your Web browser you click or a link to obtain a Web page. The IP address for the associated URL is ntot cached in your local host, so a DNS lookup is necessary to obtain the IP address. Suppose that n DNS servers are visited before your host receives the IP address from DNS; the successive visits incur an RTT of RTT, . . ., Web page associated with the link contains exactly one object, consisting ofa small amount of HTML text. Let RTTo denote the RTT between the local host and the server containing the object. Assuming zero transmission time of the object, how much time elapses from when the client clicks on the link until the client receives the object? RTT Further suppose that the P8. Referring to Problem P7, suppose the HTML file references eight very small tbes on th er Neglecting tammision tings, how much ting elapses with a. Non-persistent HTTP with no parallel TCP connections? b. Non-persistent HTTP with the browser configured for 5 parallel connections? c. Persistent HTTP