What is a Network?
Network is a system where two or more devices are connected to communicate with each other.
01Networks in Daily Life
We actually use networks every day:
- When you send a message on WhatsApp
- When you watch videos on YouTube
- When you play online games
All these operations happen over a network!
02How is Data Transmitted?
Think of it like sending a letter to a friend:
- You write the letter (data)
- You put it in an envelope (packaging)
- You write the address (IP address)
- You give it to the post office (router)
- It reaches your friend (destination)
The same logic applies in networks! Data is divided into small pieces called packets and sent to the destination.
03Basic Concepts
| Concept | Description |
|---|---|
| Packet | Small piece of data |
| IP Address | Device's address |
| Router | Device that routes packets |
| Protocol | Communication rules |
04Summary
- Network = System of connected devices
- Data is transmitted in packets
- Each device has a unique address