Computers communicate through the net, on a local and/or global scale.
It plays a big role in today's computing world

Networks are comprised of nodes that are able to share resources. With the boom of the Internet of Things, not only are people communicating through the internet with other people, but now more internet or local traffic is between people to computers.

The internet is one large network that includes all of these various devices that communicate. A network does not necessarily mean the internet, rather the internet is a subset idea of a network. The internet can be thought of as a global version of a Local Area Network.

Computers are wired, or wirelessly connected to a router which can be connected to a modem that connects your LAN to the internet. The router provides the connected devices the LAN.

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