An introduction of networking terminology: Interfaces, protocols and service

In OSI reference model, it has clear define “interfaces, protocol and service"

 

Interface:   

Interfaces are networking communications points for your computer. Each interface is associated with a physical or virtual networking device.

 

Protocol.

Protocol usally in the same layer

 

Services:

The entities in layer implement a service used by layer n+1.

Layer n : service provider.

Layer n+1:service user