What is the difference between switch, hub and router?

Question

Accepted Answer

Switch forwards data to specific devices based on MAC addresses, hub broadcasts data to all devices, router connects different networks.

Switch operates at layer 2 of the OSI model, hub operates at layer 1, and router operates at layer 3.
Switch forwards data only to the intended device based on MAC addresses, while hub broadcasts data to all connected devices.
Router connects different networks and routes data between them based on IP addresses.
Switches are more efficient than hubs as they reduce network congestion by only sending data to the intended recipient.
Example: A switch is used in a local area network to connect multiple devices, a hub is used to connect devices in a small network, and a router is used to connect different networks like a home network to the internet.

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