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What is Ethernet?

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Ethernet is a standard communications protocol embedded in software and hardware devices, intended for building a local area network (LAN). It was designed by Bob Metcalfe in 1973, and through the efforts of Digital, Intel and Xerox (for which Metcalfe worked), "DIX" Ethernet became the standard model for LANs worldwide.

 

 

A basic hard-wired LAN consists of the following components:

 

 

  • Two or more computers to be linked together, or networked.
  • A network interface card (NIC) in each computer.
  • Ethernet cable to connect to each computer.
  • A networking switch or networking hub to direct network traffic.
  • Networking software.
 

A NIC is installed in each computer and is assigned a unique address. An Ethernet cable runs from each NIC to the central switch or hub. The switch or hub will act as a relay (though they have significant differences in how they handle network traffic), receiving and directing packets of data across the LAN. This type of networking, therefore, creates a communications system that allows the sharing of data and resources, including printers, fax machines and scanners.

 

 

These networks can also be wireless. Rather than using a cable to connect the computers, wireless NICs use radio waves for two-way communication with a wireless switch or hub. In lieu of Ethernet ports, wireless NICs, switches, and hubs each feature a small antenna. Wireless networks can be more flexible to use, but also require extra care in configuring security.

 

 

 
 
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Article details
Article ID: 11
Category: Networking
Date added: 29-Nov-2013 12:49am
Views: 408
Rating (Votes): Article rated 3.4/5.0 (45)

 
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