by Dinesh Thakur Category: Communication Networks

Ethernet(pronounced "eether net") is a local area network, connecting computers together with cables so the computers can share information. Within each main branch of the network, Ethernet can connect up to 1,024 personal computers and workstations. In effect:

• most landlines are sold with an installed Ethernet network adapter but not a WiFi card;
• reliability and throughput of a wired network are far superior to WiFi;
• securing the network is wired trivial since there will be nothing really configure, or at most a firewall (or firewall) and antivirus. It will be complex secure the wireless network.
In addition, it is rare that a company chooses to rely solely on a network Wireless: Most of the time, the wireless network is just an extension of a wired network preexisting. Skip to WiFi, so it's not completely eliminate the son, but the often provide an additional way to access corporate data. It is therefore essential to know the wired technologies for even deploy wireless.
If you need to connect two sites together, WiFi will perhaps not be able to ensure the speed and reliability you need. Gigabit Ethernet Wired may prove to be the best solution.

Ethernet was developed over several years in the early 1970s by a group researchers within the company Xerox Palo Alto Research Center (Xerox PARC) including in particular Robert Metcalfe (who founded later 3Com company). The goal the research project was to connect networked computers and laser printers. Xerox Corporation filed a patent on this technology late 1977. In 1979, companies Digital Equipment Corporation (DEC), Intel and Xerox combined to improve Ethernet and together published the first standard in 1980: Ethernet Blue Book sometimes called TEN (after the initials of the three companies). Finally, the IEEE this technology became standard in 1983: 802.3 was born ... well before the 802.11! A little abuse of language, it is called Ethernet 802.3 standard. The format of DIX Ethernet packets is slightly different from the 802.3 Ethernet packets, but the two can coexist on the same network.The invention of single-chip Ethernet controllers has made Ethernet cards very cheap, and many modern PCs have it built-in on the MOTHERBOARD.

Ethernet is a SHARED MEDIUM network technology, where all the workstations are connected to the same cable and must contend with one another to send signals over it. The algorithm used to resolve collisions - that is, when two workstations try to speak at the same time - is called CSMA/CD, and works by forcing both workstations to back off for random (and hence probably different) intervals before trying again.

The maximum data rate of the original Ethernet technology is 10 megabits per second (Mbps), but a second generation FAST ETHERNET carries 100 Mbps, and the latest version called GIGABIT ETHERNET works at 1000 Mbps. SWITCHED ETHERNET involves adding switches so that each workstation can have its own dedicated 10 Mbps connection rather than sharing the medium, which can improve network throughput - it has the advantage over rival switched technologies such as ASYNCHRONOUS TRANSFER MODE that it employs the same low-level protocols, cheap cabling and NETWORK INTERFACE CARDS as ordinary Ethernet.

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About Dinesh Thakur

Dinesh ThakurDinesh Thakur holds an B.SC (Computer Science), MCSE, MCDBA, CCNA, CCNP, A+, SCJP certifications. Dinesh authors the hugely popular blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps. For any type of query or something that you think is missing, please feel free to Contact us.

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