Local area network
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A local area network is a computer network that interconnects computers within a limited area such as a residence, campus, or building, and has its network equipment and interconnects locally managed.
Twisted pair LAN cable
Network switch
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A network switch is networking hardware that connects devices on a computer network by using packet switching to receive and forward data to the destination device.
Avaya ERS 2550T-PWR, a 50-port Ethernet switch
A modular network switch with three network modules (a total of 36 Ethernet ports) and one power supply
A five-port layer-2 switch without management functionality
A rack-mounted 24-port 3Com switch