SWITCH

A network is a small hardware device that joins multiple computers together within one local area network(LAN).Technically network switches operate at layer two(Data link layer) of the OSI model.

A network switch (sometimes known as a switching hub) is a computer networking device that is used to connect many devices together on a computer network. A switch is considered more advanced than a hub because a switch will only send a message to the device that needs or requests it, rather than broadcasting the same message out of each of its ports.