TCP-IP

**T**ransmission **C**ontrol **P**rotocol / **I**nternet **P**rotocol
====TCP/IP is not one specific protocol but a combination of multiple protocols. TCP and IP are two protocols that play an important part of the communication process. TCP/IP is made up of four layers and uses various protocols in each layer to determine how the computer should connect to the Internet and how data is delivered across the Internet====

**TRANSPORT LAYER**- Uses TCP protocol. Gets data from the application layer and uses the TCP protocol to break the data into packets.
====**INTERNET LAYER**- Uses the IP protocol. Takes the packets from the transport layer and adds virtual addressed on to both the sending and receiving computers. Is responsible for actual communication between computers.====

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These protocols began to evolve in the 1960’s and 1970’s though was not tested until 1975. Stanford and the University College of London were the first to try the TCP/IP protocols between two networks. In March of 1982 the United States Military required all military networks to use the TCP/IP protocol.=====

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 * [|Robert Kahn]** and **[|Vinton Cerf]** are credited for the creation of this new protocol. On November 9, 2005 both men were given the Presidential Medal of Freedom for their contribution to American culture.=====