Difference Between. Switch , Hub, Router..

Hub:

• It Is A Layer1 Device..Used To Connect Various Machine On Lan.
• It Forwards Broadcast By Default.
• It Supports One Collision Domain And One Broadcast Domain.
• It Works On Bus Topology Resulting Less Speed.

Switch:

• A Layer2 Device.
• Forward Broadcast First Time Only.
• One Broadcast Domain & Collision Domains Depends On No. Of Ports.
• It Is Based On Star Topology Giving 100mbps To Every Pc On Lan.

Router:

• Does Not Broadcast By Default.
• Breaks Up Broadcast Domain.
• Also Called Layer3 Switch.