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Wednesday, 22 July 2015

Communication protocols

Explain the role of applications, services and protocols in converting ...

Protocols are sets of rules that are followed by machines to complete ...

Communication protocol:
In telecommunications, a communication protocol is a system of rules that allow two or more entities of a communication system to communicate between 
them to transmit information via any kind of variation of a physical quantity. These are the rules or standard that defines the syntaxsemantics and synchronization of communication and possible error recovery methods. Protocols may be implemented by hardwaresoftware, or a combination of both.
Communicating systems use well-defined formats (protocol) for exchanging messages. Each message has an exact meaning intended to elicit a response from a range of possible responses pre-determined for that particular situation. The specified behavior is typically independent of how it is to be implemented. Communication protocols have to be agreed upon by the parties involved. To reach agreement, a protocol may be developed into a technical standard. A programming language describes the same for computations, so there is a close analogy between protocols and programming languages: protocols are to communications as programming languages are to computations.

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