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2. Ethernet > Summary

Summary

Ethernet is by far the most used LAN standard for contemporary networks. Existing at Layers 1 and 2 of our networking models, Ethernet drives many of the decisions we make regarding network equipment. The signaling, physical characteristics, framing, low-level error checking, and operation of LANs are all determined by this protocol.

Historically, Ethernet has used several media types and topologies. Today, we consistently see the use of UTP for end nodes wired in switched star or tree configurations, with fiber typically reserved for network backbones.

Ethernet is standardized in the IEEE 802.3 series.


  

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