# What is a Computer Network?

Think of computer networking like your neighborhood postal system, but for digital messages. Every house needs an address, every person needs a name, and there's a post office that makes sure mail gets delivered correctly

What is a Computer Network?

A computer network is simply a group of devices that can talk to each other.

Just like houses in a neighborhood are connected by roads so people can visit each other.

**Real-Life Example**:

1. Your home WiFi network = Your neighborhood
    
2. Your laptop, phone, smart TV Different houses
    
3. Your router = The post office that delivers messages
    

Network Topologies

![](https://cdn.hashnode.com/res/hashnode/image/upload/v1756749974374/38aaa7ad-11e9-40a5-af98-1f9a7cb06d69.png align="center")

Diagram showing four main network topologies: bus, ring, mesh, and star with labeled illustrations.

Practical : Look around your room right now. Count how many devices are connected to your WiFi. Each one is part of your network!