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Understanding Ethernet

As with many of the PC and network technologies that we use today, Ethernet got its start in 1972 at the Xerox Palo Alto Research Center (PARC). Xerox actually released a commercial version of Ethernet in 1975 that provided a transmission speed of 3Mbps.

Ethernet was a big hit, and Xerox, Intel, and the Digital Equipment Corporation (DEC) worked together to modify the Ethernet specifications and produced a version that provided a data transmission speed of 10Mbps. It is this 10Mbps flavor of Ethernet that was standardized by the IEEE in its 802.3 specifications (which we look at later in the chapter).


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