What are the different types of computer networks based on their size?

Local Area Network (LAN)

A LAN is a network that connects computers and devices within a small geographic area, such as a building or campus.

Advantages:

• High data transfer rates
• Easy to set up and maintain
• Cost-effective
• Secure, as the network is isolated from the outside world

Disadvantages:

• Limited geographic range
• Expensive to expand beyond the initial setup
• Limited scalability

Wide Area Network (WAN)

A WAN is a network that connects multiple LANs and other networks over a large geographic area, such as a city, country, or even the whole world.

Advantages:

• Large geographic range
• Enables communication over long distances
• Supports a variety of communication technologies
• Scalable and flexible

Disadvantages:

• Expensive to set up and maintain
• Lower data transfer rates compared to LAN
• Requires specialized hardware and software
• Security concerns due to wide accessibility

Metropolitan Area Network (MAN)

A MAN is a network that covers a larger geographic area than a LAN, but smaller than a WAN. It is typically used to connect multiple LANs within a city or metropolitan area.

Advantages:

• Larger geographic range than LANs
• Faster data transfer rates than WANs
• Enables communication over a larger area
• Cost-effective compared to WANs

Disadvantages:

• Limited scalability
• Requires specialized hardware and software
• Security concerns due to wide accessibility