What is communication protocol?

What Does communication protocol Mean

The protocols are instructions, regulations or rules that guide an action or establish certain foundation for the development of a procedure. Communication , for its part, is a notion with multiple uses that, generally speaking, is used to name the diffusion and reception of messages.

With these definitions, we can begin to understand the concept of communication protocol . It is the set of guidelines that enable different elements that are part of a system to establish communications with each other, exchanging information.
Communication protocols establish the parameters that determine what is the semantics and what is the syntax that must be used in the communication process in question. The rules set by the protocol also make it possible to recover any data that is lost in the exchange.

If we focus on computers , the communication protocol determines how messages should circulate within a network. When the circulation of information takes place on the Internet, there are a series of specific protocols that make the exchange possible.
The most important communication protocols on the Internet are TCP (whose acronym can be translated as Transmission Control Protocol) and IP (Internet Protocol). Their joint action ( TCP / IP ) enables the link between all the computers that access the network.
POP , SMTP and HTTP are other protocols linked to the Internet , which users often use on a daily basis, even if they do not realize it or know how they work. These protocols allow browsing through websites, sending email, listening to music online, etc.
The Transmission Control Protocol is, as explained above, one of the basic elements of the Internet. Its creation dates from the period between 1973 and 1974 and is awarded to the engineer Vinton Gray Cerf and the researcher Robert Elliot Kahn.
Among the utilities of this communication protocol is the creation of connections between various programs present in a data network to carry out a flow of information. Thanks to its application in such a case, it is guaranteed that the data reaches its destination without errors and ordered in the same way in which it was found before being sent. In addition, TCP offers the possibility of recognizing each application from the rest, thanks to the use of ports .

When communication is carried out over the Internet, for example, the router must simply take care of sending data but not monitoring it, since this is done by TCP, which is also known by the layer name. transport , between the application and the Internet Protocol (IP).
This communication protocol is much better known by Internet users , although only experts know in depth what it really is. The function of IP, which is found in the network layer , is to allow communication in two directions, at destination or origin, so that data transmission is possible through a connectionless protocol that sends packets switched by means of of different physical networks that have been linked previously following the OSI standard .
The three concepts highlighted in the previous paragraph are defined below:
* Non-connection-oriented protocol : it is a communication between two nodes of a network in which messages can be sent without the need to have requested approval;
* switched packet : a packet is information grouped in such a way that each one contains data and control information, which serves to specify the path that the packet must follow until it reaches its destination;
* norma OSI: viene de la sigla Open System Interconnection, que en inglés quiere decir Sistema de Interconexión Abierto aunque también se conoce como modelo de interconexión de sistemas abiertos. Su creación tuvo lugar en el año 1980 con la intención de establecer un contexto en el cual se pudieran basar las arquitecturas de comunicación entre diferentes sistemas.

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