A special-purpose computer that receives and transmits wired traffic on the LAN is a switch.
Switches refer to networking devices or hardware that centralizes communications among several connected devices in one local area network (LAN). They are the building blocks for any network. They provide the means for connected devices to share information and converse.
Switches have many ports into which computers are plugged. They support and aid unicast, multicast as well as broadcast communications. They utilize the packet switching technique to receive and forward data packets from the source to the destination device. Switches are active devices, equipped with network software and network management capabilities.
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