A router that directs packets inside a LAN is called what?

• A. Interior Router
• B. Exterior Router
• C. Edge Router
• D. Core Router

Answer: (A)

The main idea is how a router is placed and what network scope it serves. When a router’s job is to move packets between devices that are all inside the same local network, it’s performing internal routing. That role is captured by the term interior router. It handles routing decisions within the LAN, using routes learned from internal protocols to reach machines on different subnets or segments inside that local network.

Exterior router would be at the boundary between networks, handling traffic to other autonomous systems. Edge router sits at the network’s edge where the internal network meets an external network like an ISP, managing external traffic. Core router is part of the backbone inside a large network, handling high-speed internal routing across many networks. None of those describe the router strictly directing traffic inside the LAN, so the interior router is the best fit.