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Unformatted text preview: CS 118 Spring 2008 : Homework 2 Problem 1 Problem 1 Assume you are to send a very small mail message. What is the minimum number of round trips required to achieve this? Ignore connection establishment and termination. Explain each round trip. (Clarification: Round trip involves the time for a message to go to the server and a reply from the server to come back to sender. In this case you are asked only for minimum number of such round trips. An easy way to understand this is to connect directly to a mail server as explained on section 2.4.1 of the textbook) The task of sending a small message requires 6 round trips. One round trip is required for the each of the following: a. HELO b. MAIL c. RCPT d. DATA e. Body of message f. QUIT Problem 2 POP3 allows users to fetch and download e-mail from a remote mailbox. Does this mean that the internal format of mail boxes has to be standardized so any POP3 program on the client side can read the mailbox on any mail server? Discuss your answer....
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This note was uploaded on 04/28/2010 for the course CS 118 taught by Professor Chu during the Spring '08 term at UCLA.
- Spring '08