A switch is the building block of business communication. They are used in a computer network to connect devices together. This includes devices like computers, printers, phones, cameras, and many others. The switch is responsible for controlling the flow of data through the network. Their responsibility is to receive, process, and forward data to its correct destination device.
Switches are considered superior to hubs which simply retransmit data packages to all other ports. Switches on the other hand deliver the packet only to the one or more devices which are intended to receive it. This allows switches to be more efficient and to reduce network latency.