Link layer so only complete packets are forwarded

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link layer so only complete packets are forwarded (from the repeaters) 3) How is the Simple Mail Transfer Protocol (SMTP) different from either IMAP or POP mail client access protocols. a. SMTP transports e-mail among mail servers while POP only copies messages from server to client and IMAP only copies message headers and transfers the body. 4) There is the traditional seven-layer OSI networking model. What are the parallels and contrasts that you see with the five-layer Internet model that we discussed in class? a. The seven-layer OSI model has a few of the same layers that are in the five-layer model (Physical, Network, Transport, Application) It also has Data Link, Session and Presentation b. The Internetwork and Network interface layer seems to be broken up and merged into Network and Data Link layers c. The Application layer seems to be broken up into session, presentation and application layers. 5) What is a Datagram? Is there an advantage of using UDP over TCP? a. A datagram is the transfer unit in packet switching networks b. UDP is more advantageous when the speed of delivery is more important than the accuracy of data (such as online gaming)
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6) What are the functionalities (services provided) of the Apache Web Server? How does
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  • Fall '11
  • Ring network, Apache web server

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