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Recent questions tagged application-layer-protocols

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True or false? A user requests a Web page that consists of some text and three images. For this page, the client will send one request message and receive four response messages. Two distinct Web pages (for example, www.mit.edu/research.html and www. ... the HTTP response message indicates when the object in the response was last modified. HTTP response messages never have an empty message body.
asked Apr 10, 2019 in Computer Networks ajaysoni1924 609 views
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Look over your received emails, and examine the header of a message sent from a user with a .edu email address. Is it possible to determine from the header the IP address of the host from which the message was sent? Do the same for a message sent from a Gmail account.
asked Apr 10, 2019 in Computer Networks ajaysoni1924 95 views
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Suppose Alice, with a Web-based e-mail account (such as Hotmail or Gmail), sends a message to Bob, who accesses his mail from his mail server using POP3. Discuss how the message gets from Alice’s host to Bob’s host. Be sure to list the series of application-layer protocols that are used to move the message between the two hosts.
asked Apr 10, 2019 in Computer Networks ajaysoni1924 234 views
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Write a program in JavaScript that accepts an integer greater than 2 and tells whether it is a prime number. Note that JavaScript has if and while statements with the same syntax as C and Java. The modulo operator is %. If you need the square root of x, use Math.sqrt (x).
asked Mar 19, 2019 in Computer Networks ajaysoni1924 59 views
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Numerous people have registered DNS names that consist of www.word.com, where word is a common word. For each of the following categories, list five such Web sites and briefly summarize what it is (e.g., www.stomach.com belongs to a gastroenterologist on Long ... of categories: animals, foods, household objects, and body parts. For the last category, please stick to body parts above the waist.
asked Mar 19, 2019 in Computer Networks ajaysoni1924 80 views
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Rewrite the server of Fig. 6-6 as a true Web server using the GET command for HTTP 1.1. It should also accept the Host message. The server should maintain a cache of files recently fetched from the disk and serve requests from the cache when possible.
asked Mar 19, 2019 in Computer Networks ajaysoni1924 47 views
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