Switch is a term for a device in a computer network that connects individual devices on the network (network segments). Switch is one of the active network elements.
Use of the switch in practice: Switch is used to connect individual devices within a network of computer networks. From the technical point of view, switch checks the addresses of sender and recipient contained in the transmitted data packet and based on this the switches packet only to the port, where the destination device is located. This leads to relief of the other ports. The switch has replaced the previously used hubs, which only copied the signal.
The most commonly the switches are used in topology of local network and use the Ethernet protocol.
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