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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