A protocol is set of rules that are to be followed to perform an activity or task.
• A diplomatic protocol is set of rules that are specified by the heads of nations or countries.
• A diplomatic protocol is to be followed for making deals with other countries.
• It is an art of conducting negotiations between the representatives of different countries.
In network terminology, a protocol is a set of rules that are followed to control the exchange of data between two communicating devices.
Standards for protocols are important because they specify the manner and order of sending and receiving data between the communicating devices.