Wikipedia
A network switch (also called switching hub, bridging hub, officially MAC bridge) is a computer networking device that connects devices together on a computer network by using packet switching to receive, process, and forward data to the destination device. Unlike less advanced network hubs, a network switch forwards data only to the devices that need to receive it, rather than broadcasting the same data out of each of its ports.
A network switch is a multiport …
Network switch - Wikipedia, the free encyclopedia