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10: Ethernet - What is Ethernet ? part 1

What is Ethernet ?
This lesson is critically significant in computer networks on the grounds that it includes both the Data-link Layer and Physical Layer specifications. Besides, it primarily demonstrates one of the most important technologies, which is Ethernet, in networking and how it evolved over the last few decades until becoming a worldwide and well-developed technology, without which there would be no internet as such. This lesson will first trace back the development of Ethernet by elucidating how it was initially used, then a thorough explanation will be devoted to its related protocols, standards, frames, and topologies. Thus, as usual the lesson is split up into parts for the purpose of facilitating reading and comprehension.

Covering Ethernet technology  obliges us to deal with every small detail so as to give a full picture and remove ambiguities.  Providing a history overview of Ethernet is the first brick in building this lesson, with a view to its importance in showing  to the reader  where and when this technology was invented, who invented it, what it was like in its first years of emergence, how it is evolving, and what it will be like in the future.

 Ethernet definition

Let us start with defining what Ethernet is. It is a computer networking technology developed by Robert Metcalfe in Xerox in the late 1970 ; it is commonly used in Local Area Networks (LANs) and Metropolitan Area Networks (MANs). Simply put, the internet that you are accessing now is itself this technology. A computer connected to a switch, hub, repeater,  or router to get access to the internet is done through the use of Ethernet. I know you are still confused about  which devices, protocols, or cables you can regard as part of this sophisticated technology. To make it plain for you, every device and cable used now in a LAN or MAN networks, you can regard it to belong to the Ethernet.

The coaxial cable that you use at home to connect your Satellite TV Receivers to the dish was once the only cable relied on to get access to the internet, albeit being much slower than what it is today. Cables kept developing and diverging into different types to the extent that there are some cables that can work at the speed of more than 100Gigabit per second, regardless of the high new speeds, designed for a datacenter environment,  reaching 1Terabit per second that are under development.[post_ad]
10: Ethernet - What is Ethernet ? part 1 Reviewed by BOUFTIRA on 9:35:00 AM Rating: 5

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