Networks can range in size and complexity, each designed to fit different purposes. A Local Area Network (LAN) is ideal for smaller spaces like homes or offices, where devices are in close proximity and can share resources such as printers and files. In contrast, a Wide Area Network (WAN) connects multiple LANs over vast distances, enabling communication across cities, countries, or even continents. The Internet is the most common example of a WAN.

For medium-sized areas, we use Metropolitan Area Networks (MANs), which link buildings within a city or campus. In personal spaces, Personal Area Networks (PANs) connect devices like smartphones, tablets, and laptops through technologies such as Bluetooth. Finally, Virtual Private Networks (VPNs) provide secure access to a network over the internet, often used by remote workers to access company systems.

Companies often set up Local Area Networks (LANs) in each office to enable efficient file sharing, printer access, and resource management. For example, a small business might connect all its computers to a LAN to share a single printer and quickly exchange files.

In addition, businesses use Virtual Private Networks (VPNs) to allow employees working remotely to securely access company resources. For instance, a remote worker can connect to their office’s network from home to access files and applications securely, even when they are thousands of miles away.