Understanding Layer 2, 3, and 4 Protocols - pearsoncmg.com

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3, and 4 Protocols hile many of the concepts well known to traditional Layer 2 and Layer 3 net- ... 3 Network Layer 2 Data Link Layer 1Physical Layer. ... The Session layer is used by applications at either end of the communication between end devices to tie together multiple Trans-port layer sessions and provide synchronization between them.

  Network, Communication, Protocol, Early, Layer 3, 3 network layer