A computer network is a system that connects multiple devices to share data, software, and hardware resources. The most common types of networks include:

Local Area Network (LAN) – Used in homes, offices, and schools for high-speed communication within a limited area.
Wide Area Network (WAN) – Covers large geographic areas, such as the internet.
Metropolitan Area Network (MAN) – Connects multiple LANs within a city or large campus.
Personal Area Network (PAN) – Used for personal devices like smartphones and laptops.
Networks enable users to access shared resources like printers, files, applications, and internet connections, improving efficiency and collaboration.