Which network device forwards data packets between computer networks?

Which network device forwards data packets between computer networks?

• A. Bridge
• B. Hub
• C. Router
• D. Switch

Answer: (C)

Routing between networks is performed by a router. The router sits at the network layer, reads the destination IP address in each packet, and uses its routing table to pick the best next hop toward the destination. This lets it connect different networks (like a local LAN to the Internet) and forward data across network boundaries, adapting paths as needed. A bridge or switch, by contrast, forwards frames within a single local network using MAC addresses, so they don’t route packets to other networks. A hub simply repeats signals to all ports with no path selection, which doesn’t separate or connect networks efficiently.

Routing between networks is performed by a router. The router sits at the network layer, reads the destination IP address in each packet, and uses its routing table to pick the best next hop toward the destination. This lets it connect different networks (like a local LAN to the Internet) and forward data across network boundaries, adapting paths as needed. A bridge or switch, by contrast, forwards frames within a single local network using MAC addresses, so they don’t route packets to other networks. A hub simply repeats signals to all ports with no path selection, which doesn’t separate or connect networks efficiently.