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Friday, September 16, 2011

What Is Ethernet?

         Ethernet is the most widely-installed local area network technology. Specified in a standard, IEEE 802.3, Ethernet was originally developed by Xerox from an earlier specification called Aloha net (for the Palo Alto Research Center Aloha network) and then developed further by Xerox, DEC, and Intel. An Ethernet LAN typically uses coaxial cable or special grades of twisted pair wires. Ethernet is also used in wireless LANs. The most commonly installed Ethernet systems are called 10BASE-T and provide transmission speeds up to 10 Mbps. Devices are connected to the cable and compete for access using a Carrier Sense Multiple Access with Collision Detection (CSMA/CD) protocol.

          Fast Ethernet or 100BASE-T provides transmission speeds up to 100 megabits per second and is typically used for LAN backbone systems, supporting workstations with 10BASE-T cards. Gigabit Ethernet provides an even higher level of backbone support at 1000 megabits per second (1 gigabit or 1 billion bits per second). 10-Gigabit Ethernet provides up to 10 billion bits per second.






Related Search Terms:
          What is Ethernet
          Types Of Ethernet Cards
          Standard IEEE 802.3 Ethernet
          Palo Alto Research Center Aloha network

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