What are the 4 types of computer networks?

A computer network is a group of interconnected computers that enables communication and resource sharing. Networks can be categorized based on their size and scope. Here are the four main types of computer networks:

1. Local Area Network (LAN)

• Definition: A LAN connects computers within a small area, such as a building or office.
• Characteristics:
  • Uses inexpensive hardware like hubs and Ethernet cables.
  • Offers high-speed data transfer.
  • Provides enhanced security.

2. Personal Area Network (PAN)

• Definition: A PAN is a small network for personal devices, typically within a range of 10 meters.
• Characteristics:
  • Connects devices like smartphones, laptops, and tablets.
  • Can be wired (using USB) or wireless (using Bluetooth or Wi-Fi).
• Examples:
  • Body Area Network: Moves with a person, like a mobile network.
  • Home Network: Connects devices within a home without internet access.

3. Metropolitan Area Network (MAN)

• Definition: A MAN covers a larger geographic area, connecting multiple LANs within a city.
• Characteristics:
  • Used by government agencies and businesses for local communication.
  • Connects various LANs through telephone lines or fiber optics.
• Uses:
  • Banking communication, airline reservations, and educational institutions.

4. Wide Area Network (WAN)

• Definition: A WAN spans a large geographical area, such as states or countries.
• Characteristics:
  • Connects multiple LANs and MANs over long distances using telephone lines, fiber optics, or satellite links.
  • The internet is the largest example of a WAN.
• Advantages:
  • Centralized data management and high bandwidth for efficient communication.
  • Facilitates global business operations.
• Disadvantages:
  • Higher security risks and setup costs.
  • Troubleshooting can be complex due to the vast area covered.