Understanding the TCP/IP Model

In Chapter 2, “The OSI Model,” the OSI model and the TCP/IP model were compared side by side. But that chapter only briefly noted the TCP/IP model and focused most of our attention on the OSI model. It is important that equal, if not greater, attention is allotted to the TCP/IP model because it describes the encapsulation process from the perspective of the protocol that is the most widely used networking protocol and the one with which you will probably work the most in your career.

TCP/IP is not the only networking protocol ever used. Other networking protocols were created by networking software and operating system companies to support networking between their products. Some of these protocols worked quite well, ...

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