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The Internet Protocol Suite (commonly known as TCP/IP) is the set of communications protocols used for the Internet and other similar networks.
It is named from two of the most important protocols in it: the Transmission Control Protocol (TCP) and the Internet Protocol (IP), which were the first two networking protocols defined in this standard.
The TCP/IP model consists of four layers. From lowest to highest, these are the:
- Link Layer (2)
- Internet Layer (3)
- Transport Layer (4)
- Application Layer (7)
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