what does a switch do in a network

A switch is used in a wired network to connect to other devices via Ethernet cables. The switch allows each connected device to talk to the others. Wireless networks do not use switches because devices such as routers and wireless adapters communicate directly with each other.

what does a switch do in a network

Although you can use the ports on the back of a router or modem to connect certain Ethernet devices, switches offer a number of advantages:

Switches allow you to connect dozens of devices.
The switches prevent traffic between two devices from hindering other devices on the same network.
Switches allow you to control who has access to different parts of the network.
The switches allow you to monitor usage.
The switches allow for even faster communication (within the network) than with the Internet.
High-end switches can be adapted to the needs of your network with plug-in modules.

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