Which statement best describes the role of a router in routing traffic between networks?

• A. It only forwards traffic within the same network
• B. It connects networks, determines the best path, and uses a routing table to forward traffic
• C. It primarily provides firewall functionality
• D. It converts between different electrical standards

Answer: (B)

A router’s job is to connect different networks and move traffic between them. It examines the destination IP in a packet, consults its routing table to find the best next hop toward that destination, and forwards the packet accordingly. This is what enables communication across subnetworks that are separated by routers. While some routers can add firewall features or perform address translation, the core idea here is that routing involves linking networks, choosing the optimal path, and directing traffic through the appropriate next hop based on the routing table.