Which device connects two different networks?

Router. A router is a networking device that connects two or more different networks and forwards data packets between them. Routers operate at the Network Layer (Layer 3) of the OSI model and are used to manage traffic within and between networks, including the Internet.

Explanation of other options:

• Switch: Operates at the Data Link Layer (Layer 2); connects devices within the same network (LAN).


• Hub: A basic device that transmits data to all ports; no intelligence, used within LANs.


• Bridge: Connects two segments of the same network, not different networks.

Routers use IP addresses to determine the best path for forwarding packets and are key to enabling communication between home networks, offices, and the internet.