Ethernet technology

Ethernet - a technique in which standards used in the construction of mainly local computer networks are included. It includes the specification of wires and the signals transmitted. Ethernet also describes the frame format and protocols of the two lowest layers of the OSI Model. Its specification is given in the IEEE 802.3 standard. Ethernet is the most popular standard in local networks. Other specifications used are Token Ring, FDDI or ARCNET. Ethernet was developed by Robert Metcalfe at Xerox PARC, a research center of Xerox and published in 1976. It is based on the idea of ‚Äč‚Äčnodes connected to a common medium and sending and receiving special messages (frames). All nodes have a unique MAC address. Classic Ethernet networks have four common features. These are: time parameters, frame format, transmission process basic rules for designing them. The standard is insulation with a minimum strength of 250 V ~ between the cable and the computer (some companies, eg 3Com, used a better one, which resulted in a much greater durability of their network cards) source: