what is protocol?

In computing, a protocol is a convention or standard that controls or enables the connection, communication, and data transfer between two computing endpoints. In its simplest form, a protocol can be defined as the rules governing the syntax, semantics, and synchronization of communication. Protocols may be implemented by hardware, software, or a combination of the two. At the lowest level, a protocol defines the behavior of a hardware connection.

Protocol is a set of rules which must be followed while transfering data over the internet.there are specific protocols for separate applications.like http,https,ftp,ppp

protocol is a set of routines that help for data communication b/w systems. it just acts as a bridge for passing the data. there are many types of protocols. internet uses 1) TCP IP Protocol. ie. transmission control protocol. SMTP - simple mail transfer protocol. ip - internet protocol which is 127.0.0.1 by default on ur machine when even not connected to internet. Thank u. good day.