Router inter network device – UGC NET Question

Routers operate at the network layer and use logical IP addresses in routing tables to determine the best path for packets. They interconnect different networks, such as linking a local area network to the wider internet. This makes them fundamental components in complex network architectures. Therefore, the device described is a router.

Option A:
Option A, switch, primarily operates at the data link layer and forwards frames within a single local network segment rather than between different networks. It does not typically make routing decisions based on network layer addresses.

Option B:
Option B, hub, is a basic device that simply repeats incoming electrical signals to all ports without any intelligent forwarding, and it does not examine logical addresses.

Option C:
Option C is correct because routers are defined by their ability to connect multiple networks and route packets based on IP addressing information. This matches the description given in the question.

Option D:
Option D, repeater, amplifies or regenerates signals to extend the distance they can travel on a cable but does not make decisions about packet paths between networks.