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Application Layer

Application layer is the seventh top layer in the OSI reference model which provides user interfaces and service utilities to the end user.


Following are the services provided by the application layer :

  • Provides interfaces to user processes.
  • Identifies the communicating users and their authentication.
  • Provides services like browsing, e-mail, file transfer, chatting, directory etc.

Protocols used: HTTP, FTP, SMTP, DHCP, Telnet, SNMP, POP3 etc.

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