A LAN (Local Area Network) is a network that connects computers and devices within a small area, such as a home, school, or office. It is usually fast, reliable, and less expensive because it only covers a limited space.
A WAN (Wide Area Network) is a network that connects multiple LANs over a large geographic area, such as cities, countries, or even worldwide. It is generally slower and more expensive because it covers long distances and uses public communication systems.

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