1. What is a Computer Network?
A Computer Network is a group of 2 or more connected devices that can share data and resources.
Example: Laptop, Router, Computer- Shared Resources, Files, Printers, Internet connection
Key Idea: No network without at least 2 connected devices sharing something.
2. Types of Computer Networks
LAN, Local Area Network
- Covers a small area
- Examples: home, school, office
MAN, Metropolitan Area Network
- Covers a city or large town
- Larger than a LAN
WAN, Wide Area Network
- Covers a very large area
- Connects countries or continents
Network Range
LAN
↓
MAN
↓
WAN
Key Idea: Coverage area grows in order, LAN → MAN → WAN.
Memory Tip
- LAN, Small area
- MAN, City
- WAN, World / Large area
Summary
- Computer Network, 2+ devices sharing data and resources
- LAN, small area (home, school, office)
- MAN, city or large town
- WAN, very large area, connects countries (Internet)
Remember: LAN, small area. MAN, city. WAN, world.