Saturday, February 9, 2008

Transmission Control Protocol

Transmission Control Protocol (TCP) is the protocol of level of transport of the Suite of Internet protocols. It is defined in RFC 793, and on it great part of the Internet applications is leaned.

The TCP can approximately be classified to the level transport (DARES level 4) of the reference model DARES, and of usual IP is used in combination with the level protocol net (DARES level 3 ). The correspondence with the model DARES is not perfect, in how much the TCP and the IP is born before. Their combination is indicated like TCP/IP and, to the times, erroneously an only protocol is considered.

TCP is planned in order to use the services of protocol IP, than it does not offer some guarantee in order to the delivery of the packages, to the delay, the congestion, and to construct a reliable communication channel between two processes applied to you. The communication channel is constituted from a bidirectional flow of byte. Moreover, some functionalities of TCP are vital for the good total operation of one net IP.

The TCP nacque in 1970 as fruit of the job of a group of search of the department of American defense. Its head of force are the high reliability and robustness. Its popolarità must also to thanks to one its implementazione diffused from the University of Berkeley in California under source shape.

No comments: