Switches

In this article we will discuss Switches, will make brief discussion on Switches, In last article we discuss about Network Bridges.

A network switch is a computer networking device that connects devices on a computer network by using packet switching to receive, process, and forward data to the destination device.

Switched communication networks are those in which data transferred from source to destination is routed between various intermediate nodes. Switching is the technique by which nodes control or switch data to transmit it between specific points on a network.

The most basic explanation is that a switch is designed to connect computers within a network, while a router is designed to connect multiple networks together. Even though routers and switches are different, they can be used interchangeably. For example, a router typically has several LAN ports and a single WAN port.

How does a network switch work as compared to a router? Switches allow different devices on a network to communicate. Routers allow different networks to communicate. A router also connects networked computers to the Internet, so multiple users can share a connection. You connect devices to a hub using Ethernet cable and any signal sent from a device to the hub is simply repeated out on all other ports connected to the hubHubs are considered Layer 1 (Physical) devices whereasswitches are put into Layer 2 (Data Link). This is where hubs and switches differ.


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