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TCP/IP protocols correspond to a four-layer reference model, similar to the seven-layer OSI model, as shown in Figure 1-1. Here also, the four layers represent related standards. These standards serve to define the architecture of a TCP/IP network. They also define how TCP/IP communicates. The four layers that comprise the TCP/IP protocol suite are application, transport, Internet, and network interface. Each layer corresponds to one or more layers of the seven-layer OSI model, as shown in the figure. If you remember your networking essentials, you are aware that logical communication takes place between the corresponding layers of a reference model as found on two mac...


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