Reference no: EM133240262
Problem 1: Consider an e-commerce site that wants to keep
a purchase record for each of its customers. Briefly describe how this can be done with cookies.
Problem 2: Suppose within your Web browser you click on a link to obtain a Web page. The IP address for the associated
URL is not cached in your local DNS server, so a DNS lookup is necessary to obtain the IP address through the hierarchy of the DNS servers.
Suppose that 4 DNS servers (1 root DNS server, 1 TLD DNS server, 2 authoritative DNS servers) are visited before your host receives the IP address from DNS; the successive visits incur an RTT of RTT1, RRT2, RRT3, and RTT4, respectively.
Question
how much time elapses from when the client clicks on the link until the client receives the IP address of the target reserve?
Further suppose that the Web page associated with the link contains exactly one object, consisting of a small amount of HTML text. Let RTT0 denote the RTT between the local host and the server containing
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