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Protocol

 

A set of formal rules describing how to transmit data, especially across a network. Low level protocols define the electrical and physical standards to be observed, bit- and byte-ordering and the transmission and error detection and correction of the bit stream. High level protocols deal with the data formatting, including the syntax of messages, the terminal to computer dialogue, character sets, sequencing of messages etc.

Some examples of protocols are : TCP/IP, the protocol used on the internet to send and receive information; HTTP - used for Web page communications, is a subset of TCP/IP.


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