What is the difference between protocol and interface?

Answer 1

Port is nothing but physical ports that means the cables are connected physically. For Instance : There are 24 ports in the switch, which means 24 physicall cables can be connected. Interface is nothing but the an interface that means GUI interface. For Instance : There is an ADSM interface in the PIX ASA box where we can do the configuration in the GUI interface. I think it helps you to undestand very well. by, Iyyappan

Answer 2

An interface refers to a point of interaction between components, whether a piece of hardware such as a graphics card or a piece of software such as an internet browser to function independently while communicating with other components via protocol. A protocol is a convention or standard that controls or enables the connection, communication, and data transfer between computing endpoints, or interfaces.

Answer 3

Interfaces change constantly. Data does not.