An _____ is a type of router that enables an internal network to connect to an external network

• A. Core Router
• B. Edge Router
• C. Distribution Router
• D. Access Router

Answer: (B)

Edge routers sit at the boundary between an internal network and external networks such as the Internet or a WAN. They are the devices that enable traffic to flow from inside the LAN to outside networks and from outside networks back in, often handling tasks like NAT, basic firewalling, and VPN termination. This boundary role is what distinguishes the edge router from other types: a core router stays inside the backbone, focusing on fast internal routing; a distribution router sits between the core and the access layer, aggregating traffic and applying policies; an access router connects directly to end-user devices or switches. Because the question describes connecting an internal network to an external network, the edge router is the most appropriate fit.