What are different types of computer network?

Types of Computer Networks

1. LAN (Local Area Network)

   • Description: A LAN connects systems in a small geographical area, such as a building or a small office.
   • Characteristics:
     • Inexpensive to set up and maintain.
     • Typically uses Ethernet or Token Ring technology.
     • Allows two or more personal computers to connect via wires or cables acting as nodes.
     • Data transfer speeds are fast, and it is highly secure.

2. PAN (Personal Area Network)

   • Description: The smallest type of computer network.
   • Characteristics:
     • Devices can be connected through Bluetooth or infrared-enabled devices.
     • Connectivity range is up to 10 meters (approximately 30 feet).
     • Primarily connects personal devices belonging to a single user.

3. MAN (Metropolitan Area Network)

   • Description: A network that covers a larger area, such as a city.
   • Characteristics:
     • Can be implemented using Ethernet, ATM, Token Ring, and FDDI technologies.
     • Offers a higher range compared to LAN.
     • Often used to connect citizens with various organizations, such as cable TV services.

4. WAN (Wide Area Network)

   • Description: A network that spans a large geographical area, potentially covering an entire country.
   • Characteristics:
     • Can connect multiple LANs and MANs.
     • Utilizes telephonic lines and satellite links.
     • The Internet is the largest WAN globally.
     • Primarily used by government organizations and large enterprises for data management and communication.

5. VPN (Virtual Private Network)

   • Description: A network that uses public internet infrastructure to connect to a private network securely.
   • Characteristics:
     • Enables the creation of secure networks over the Internet.
     • Utilizes encryption and other security mechanisms to ensure that only authorized users can access the network.
     • Commonly used for secure remote access to private networks.

This structure provides a clear understanding of each network type, its purpose, and its key features, which can be useful for your studies or presentations. If you need further elaboration on any specific type or concept, feel free to ask!