TCP/IP model

The TCP/IP Protocol is the protocol or language used in modern communications; it is the only protocol used by the internet. The TCP/IP model is derived from the OSI reference model, and it is a four-layer model:

Layers

TCP/IP model layers

Corresponding OSI layers

4

Application

Application, presentation, and session

3

Transport

Transport

2

Internet

Network

1

Network

Data link and physical

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