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Computer Networks
Understanding connections from PAN to WAN
Takshil Jain
Class X • Session 2024-25
What is a Network?
A collection of computers and devices connected to share resources.
📂
Data
🖨️
Resources
💬
Comms
🌐
Internet
Smallest Range
PAN
Personal Area Network
- ● Range: ~10 Meters
- ● Bluetooth / USB
- ● Ex: Phone to Laptop
Building Scale
LAN
Local Area Network
- ● Range: Home / Office
- ● High Speed
- ● Ex: School Lab, Wi-Fi
City Scale
MAN
Metropolitan Area Network
- ● Range: Entire City
- ● Connects multiple LANs
- ● Ex: Cable TV Network
Global Scale
WAN
Wide Area Network
- ● Range: Country / World
- ● Uses Satellites / Fiber
- ● Ex: The Internet
Scale Comparison
Logarithmic Scale of Coverage Area
| PAN | ~10m |
| LAN | Building |
| MAN | City |
| WAN | Global |
The Internet
🌍
The largest WAN connecting billions of devices.
“Network of Networks”
Thank You!
Hope you learned something new about networks.
Resources:
NCERT • Wikipedia
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