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Chapter 7: Application layer

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Chapter 2 Application Layer

Chapter 2 Application Layer. Part 4: DNS & P2P. Computer Networking: A Top Down Approach , 5 th edition. Jim Kurose, Keith Ross Addison-Wesley, April 2009. . 2.1 Principles of network applications 2.2 Web and HTTP 2.3 FTP 2.4 Electronic Mail SMTP, POP3, IMAP 2.5 DNS.

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Naming

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FTP, SMTP and DNS

FTP, SMTP and DNS. FTP client contacts FTP server at port 21, specifying TCP as transport protocol Client obtains authorization over control connection Client browses remote directory by sending commands over control connection.

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Domain Name System (DNS)

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CS 4396 Computer Networks Lab

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