Differences between Hub, Switch and Router?
| Hub | Switch | Router |
| Physical Layer Device | Data Link Layer Device | Network Layer Device |
| Simply repeats signal to all ports | Doesn’t simply repeat, but filters content by MAC or LAN address | Routes data based on IP address |
| Connects devices within a single LAN | Can connect multiple sub-LANs within a single LAN | Connect multiple LANS and WANS together. |
| Collision domain of all hosts connected through Hub remains one. i.e., if signal sent by any two devices can collide. | Switch divides collision domain, butbroadcast domain of connected devices remains same. | It divides both collision and broadcast domains, |
Explanation from : GeeksForGeeks
Next Generation of Computer Engineers 