Router between networks

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

Answer: (A)

The key idea is routing traffic between different networks. A router operates at the network layer and uses IP addresses to determine where a packet should go next, choosing the appropriate path toward the destination network based on its routing table. It’s the device that sits at the boundary between networks, letting devices in one subnet communicate with devices in another.

Bridges and switches stay within a single network by forwarding frames using MAC addresses, so they don’t route between distinct IP networks. A hub simply repeats electrical signals to every port, offering no path selection or network separation. In contrast, a router can connect separate networks, handle inter-network communication, and even provide features like NAT or routing protocols to manage paths between networks. This makes it the correct choice for connecting networks.