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Local Area High Speed Networks by Dr. Sidnie Feit

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Summary Points

  • A LAN connects a set of computers so that they can communicate with one another directly.

  • Ethernet, Token Ring, FDDI, fibre channel, and ATM are described in published standards documents.

  • Classic Ethernet, Token Ring, and FDDI all were half-duplex protocols—they allowed only one station to transmit successfully at a given time. Currently, switched "full-duplex" implementations of Ethernet, Token Ring, and FDDI enable multiple systems to communicate concurrently.

  • Price/performance and an expanding set of usability features have made Ethernet the dominant LAN technology in use today.

  • LAN technology operates at the physical and data link layers of theOSI model.

  • The job of Layer 1, the physical layer, is to transmit 0s and 1s acrossa ...

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