What are the differences between basic concepts such as services, interfaces, and protocols?

September 25, 2019 8:22 am

* Question

* Answer

OSI-RM has three main concepts, namely services, interfaces and protocols.Perhaps the biggest contribution of OSI-RM is the clarification of the three concepts of services, interfaces and protocols.

(1) Each layer provides services for the layers above it.

(3) The peer-to-peer protocol used in a layer is an internal transaction of that layer.It can use any protocol as long as it can do the job, and can change the protocol used without affecting the layer above it.