What is Ethernet?

Ethernet is a protocol that controls the way data is transmitted over a local area network (LAN). It uses wires (meaning it is not a wireless technology). IEEE 802.3 CSMA/CD. These we are mostly using as a cable for connecting the internet modem and PC or in  Local Area Network Let see some features of Ethernet

 Ethernet transmits data at up to ten million bits per second (10Mbps). Fast Ethernet supports up to 100Mbps and Gigabit Ethernet supports up to 1000Mbps.

Ethernet supports a wide array of data types, including TCP/IP, AppleTalk, and IPX.

To prevent the loss of data, when two or more devices attempt to send packets at the same time, Ethernet detects collisions. All devices immediately stop transmitting and wait a randomly determined period of time before they attempt to transmit again.

Ethernet Terminology


    Medium - Ethernet devices attach to a common medium that provides a path along which the electronic signals will travel. Historically, this medium has been coaxial copper cable, but today it is more commonly a twisted pair or fiber optic cabling.

     Segment - We refer to a single shared medium as an Ethernet segment.

    Node - Devices that attach to that segment are stations or nodes.

    Frame - The nodes communicate in short messages called frames, which are variably sized chunks of information.