Objective 6: Able to fully understand HTTP

Problem: Suppose within your Web browser you click on a link to obtain a Web page. The IP address for the associated URL has already been cached in your local host so a DNS look-up is unnecessary. Suppose that the Web page associated with the link contains some HTML text and 20 jpeg images that are hosted on the same Web server. Let RTT0 denote the RTT between the local host and the Web server. Assuming 0 transmission time of the HTML text and the embedded images, calculate how much time elapses from when the client clicks on the link until the client receives the Web page (HTML text and the embedded images) under the following scenarios:

1. HTTP 1.1 with pipelining (and with persistent connection)
2. HTTP 1.1 without pipelining (and with persistent connection)
3. HTTP 1.0 with 5 parallel TCP connections created to fetch the 20 referenced jpeg images