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CompTIA Network+ (N10-004) Cert Guide by Mike Harwood

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Chapter 9. OSI Model

One of the most important networking concepts to understand is the Open Systems Interconnection (OSI) reference model. This conceptual model, created by the International Organization for Standardization (ISO) in 1978 and revised in 1984, describes a network architecture that enables data to be passed between computer systems. Even though the OSI model is conceptual, an appreciation of its purpose and function ...

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