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it's a little choppy, but a start
A '''Network Switch''' is a telecommunication device which facilitates communication within networks. It are classified as a layer-two device on the [[OSI model]]. It isolates collision domains, and uses MAC addresses to communicate. Broadcasts are not isolated by standard switches, meaning they offer less network security than [[Router (computing)|routers]]. However, some switches can be configured with VLANs, to serve this function. (This requires a layer 3 switch to enable the VLANs to communicate.
[[Category:Networking]]
[[Category:Networking]]