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You are here: Home / CompTIA / Network+ / Section I: Networking Concepts / Chapter 1: The OSI and TCP/IP Models / TCP/IP Protocol Suite

TCP/IP Protocol Suite

Although the OSI model does a great job of describing in detail how the network operates, it is actually considered a reference model. To ensure proper communication between network devices, the TCP/IP protocol suite is used instead.

 

Note:    The OSI reference model was created by the International Organization for Standardization (ISO), while the TCP/IP protocol suite was created and first implemented by the Internet Engineering Task Force (IETF).

 

The TCP/IP protocol suite is a modern adaptation of the OSI reference model and it contains five layers:

  • Application Layer
  • Transport Layer
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