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Written By nuriyati mauji on Monday, 21 October 2013 | Monday, October 21, 2013

  The TCP/user interface provides for calls made by the user on the TCP  to OPEN or CLOSE a connection, to SEND or RECEIVE data, or to obtain  STATUS about a connection.  These calls are like other calls from user  programs on the operating system, for example, the calls to open, read  from, and close a file.

  The TCP/internet interface provides calls to send and receive  datagrams addressed to TCP modules in hosts anywhere in the internet  system.  These calls have parameters for passing the address, type of  service, precedence, security, and other control information.


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