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A network switch or switching hub is a computer networking device that connects network segments.

The term commonly refers to a network bridge that processes and routes data at the data link layer (layer 2) of the OSI model. Switches that additionally process data at the network layer (layer 3 and above) are often referred to as Layer 3 switches or multilayer switches.

The term network switch does not generally encompass unintelligent or passive network devices such as hubs and repeaters.



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