Simple explanation about router and switch differences.
Both are used to move computer data, but with two very
different functions.

Routers are used to connect an outside network (think
Internet Service Provider's modem) with a local area
network. Whereas a switch is mostly to multiply the network
connections with the same local area network.

The specifics can certainly be more confusing. Some routers
to act like switches. And, some switches can act like
routers (VLANs). But, for the purposes of this simple
explanation will stick with the basic functions of a router
and a dumb switch (layer 2).

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