Introduction
TCP/IP stands for Transmission Control Protocol/Internet Protocol and refers to a collection of data transmission protocols used for sending messages among a distributed network of computers.
The examples in this section will be based on the following network (see Figure 31-1):
Figure 31-1. Sample Network
Open System Interconnect (OSI) Reference Model
Most discussions of TCP/IP open with a few words about the OSI reference model. The OSI model was created in 1978 to specify a standard used for the development of network systems. Real world protocol designers have been cheerfully ignoring it ever since, but it comes up whenever people ...
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