Question

what is protocol? ? ? ? ? ? ​

Answer 1

$\huge\mathbb\color{red}{ANSWER}$

A communication protocol is a system of rules that allow two or more entities of a communications system to transmit information via any kind of variation of a physical quantity. The protocol defines the rules, syntax, semantics and synchronization of communication and possible error recovery methods.

Answer 2

Answer:

$\huge\sf\underline\blue{Answer}$

A communication protocol is a system of rules that allow two or more entities of a communications system to transmit information via any kind of variation of a physical quantity. The protocol defines the rules, syntax, semantics and synchronization of communication and possible error recovery methods.