WHAT IS A NETWORK SWITCH

A network switch is a device that connects multiple devices (like computers, printers, and servers) within the same network. Think of it like a smart power strip for data—it lets devices talk to each other quickly and efficiently.

MAIN FUNCTION OF A NETWORK SWITCH

1. Connects devices in a local network
A switch links devices together so they can communicate inside a home, school, or office network.

2. Sends data to the correct device
Unlike older hubs, a switch is smart—it sends data only to the device it’s meant for, not everyone.

3. Improves network speed and performance
By reducing unnecessary traffic, switches make data transfer faster and smoother.

4. Supports wired connections
Devices connect to a switch using Ethernet cables, which are often faster and more stable than Wi-Fi.

5. Works with routers
A switch expands the number of devices you can connect to a router, especially in offices or labs.

HOW A NETWORK SWITCH WORKS

a) Each device has a unique address (called a MAC address)
b) The switch learns these addresses
c) When data is sent, the switch checks the address
d) It forwards the data only to the correct device

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