A network is a system of interconnected devices that can communicate and share information, data, and resources. There are different types of networks based on various factors, such as size, coverage, design, and topology. Some of the most common types of networks are:

• Personal Area Network (PAN): A PAN is the smallest and simplest type of network that connects devices within the range of an individual, usually within 10 meters. A PAN can be wireless, using technologies like Bluetooth or infrared, or wired, using technologies like USB. A PAN is useful for personal use, such as connecting a wireless headset to a smartphone or a laptop. A PAN is portable, affordable, reliable, and secure².

• Local Area Network (LAN): A LAN is a network that connects devices within a limited geographic area, such as a home, office, or school. A LAN can use wired technologies, such as coaxial cables, optical fibers, or twisted pair wires, or wireless technologies, such as Wi-Fi or Ethernet. A LAN enables users to share devices, resources, and information within the same network. A LAN is fast, efficient, and easy to maintain¹³.

• Campus Area Network (CAN): A CAN is a network that connects multiple LANs within a campus or an organization. A CAN can span across buildings or locations within a few kilometers. A CAN can use routers and switches to create the network infrastructure and provide high-speed connectivity. A CAN is useful for educational institutions, research labs, or corporate offices that need to share data and resources among different departments or units³.

• Metropolitan Area Network (MAN): A MAN is a network that connects multiple LANs or CANs within a metropolitan area, such as a city or a town. A MAN can cover an area of up to 50 kilometers. A MAN can use technologies like fiber-optic cables, microwave links, or satellite links to provide high-capacity and high-performance communication. A MAN is useful for public services, such as transportation, health care, or government agencies that need to coordinate and collaborate across different locations¹³.

• Wide Area Network (WAN): A WAN is the largest and most complex type of network that connects multiple LANs, CANs, or MANs across geographically dispersed areas, such as countries or continents. A WAN can span across thousands of kilometers. A WAN can use technologies like leased lines, circuit switching, packet switching, or cellular networks to provide long-distance and global communication. A WAN is useful for multinational corporations, international organizations, or internet service providers that need to access and exchange information and resources across the world¹³.