Data Communication Reference Models

Although each data communication protocol has its own operational reference model, all are contrasted to the Open Systems Interconnect Reference Model (OSI-RM) and the Institute of Electrical and Electronics Engineers (IEEE) model. The OSI-RM is the basis for discussing the various elements of the data communication process. The IEEE extension model defines the operational specifications for the transport layer protocols.

An understanding of these models and their relationship to the logical computer network elements, which was already covered, is crucial to forming an understanding of internetworking. Protocol reference models exist to serve as road maps to illustrate how the different protocols perform in ...

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