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    • The Cisco Three Layer Hierarchical Model vs the OSI Model

      The Cisco Three Layer Hierarchical Model vs the OSI Model

      The ISO, International Organization for Standardization is the Emily Post of the network protocol world. Just like Ms. Post, who wrote the book setting the standards or protocols for human social interaction, the ISO developed the OSI model as the precedent and guide for an open network protocol set. Defining the etiquette of communication models,

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