LAN, A network that connects computers and devices in a small, specific area such as a home, school, computer laboratory, or office building., WAN, A network that covers a broad area (e.g., any network whose communications links cross metropolitan, regional, or national boundaries)., PAN, A network for personal devices typically within the range of an individual person, typically within a range of 10 meters., Advantages of Networks, Sharing, Accessibility, Communication, Collaboration, Efficiency, Centralisation and Storage, Disadvantages of Networks, Security, Dependency, Maintenance, Complexity, Compatibility.

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