OSI Model

The OSI Stands for Open Systems Interconnection. It is the model system for computer networking IP Networks technology. It defines seven layers. The layers are:

7 Application layer

6 Presentation layer

5 Session layer

4 Transport layer

3 Network layer

2 Data link layer

1 Physical layer

Application layer works behind the application softwares in our computers.

Presentation layer is responsible for formatting and conversion of data from one form to another form.

Session layer manages different sessions of different programs running at the same time.

Transport layer is responsible for transfer of data of UDP and TCP.

Network Layer works on L3 logical addressing (IP addressing).

Data link layer transfer data on the same network with the help of MAC addressing or Hardware addressing.

Physical layer is physical media of the link and transmits the data in form of bits and bytes.