MCQ Detailed View

Routers are responsible for routing data packets between different networks. They use IP addresses to decide the best path for sending data from the source device to the destination device, especially when the devices are on different networks.

Key functions of a router:

• Reads IP addresses: Routers look at the destination IP address in a packet to forward it properly.


• Routes data: They determine the best possible path to reach another network.


• Connects networks: Routers link two or more different networks (e.g., your home network to the internet).

In contrast, devices like switches and bridges work at the Data Link Layer (Layer 2), and hubs work at the Physical Layer (Layer 1). Only routers operate at Layer 3, the Network Layer.

Conclusion: The router is a Layer 3 device in the OSI model. It manages logical addressing and routing, making sure data reaches its final destination across networks.