Ethernet is a type of computer networking technology that is commonly used for transmitting data through cable in local area networks (LANs). Ethernet is a form of communication protocol used to connect various numbers of computers with each other to transmit data. it is invented by Robert Metcalfe. An Ethernet is also known as Alto Aloha Network and it is a commonly used LAN and WAN protocol. It is wired connections are used for faster maximum data transfer rates and are more secure & less susceptible to interference than wireless networks. Different types of ethernet are following: ?Types of ethernet Features Fast Ethernetsupported by a twisted pair or CAT5 cable. transfer or receive data at around100 Mbpsoptic fiber cable and twisted pair cable are usedGigabit Ethernetuses optic fiber cable and twisted pair cabletransfer data at a rate of 1000 Mbps or 1Gbpsuses CAT5e or other advanced cables10-Gigabit Ethernettransmit data at a rate of 10 Gigabit/secondCAT6a or CAT7 twisted-pair cables and fiber optic cablesexpended up to nearly 10,000 meters with the help of using an optical fiber cable. Switch Ethernettype of network involves adding switches or hubsthe network can have its own dedicated 10 Mbps connection instead of sharing the mediumit supports 1000Mbps to 10 Gbps and 10Mbps to 100Mbps for fast Ethernetit is the latest ethernet one. Therefore, Ethernet is a system that connects a number of computers or devices together to form a LAN