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 What is a switch, router Introduction to Wide Area Networks

Data Layers

Data Application (Network Process to Application)

Data Presentation (Data Representation & Encryption)

Data Session ( Inter-Host Communication)

Segments Transport (End-to-End Connections & Reliability)

Packets Network (Path Detemination &IP)

Frames Data Link (Mac & LLC physical Addressing)

Bits Physical (Media,Signal& Binary Transmission)

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