What is an Edge Router?

An Edge Router is indeed defined as a router that connects internal networks to external networks. This type of router typically serves as a gateway, managing data traffic between different network environments, such as a private local area network (LAN) and the internet.

Edge routers are crucial for directing incoming and outgoing data and often incorporate features for network security, traffic management, and routing efficiency. They handle all internet-bound traffic that needs to flow from the internal network to the outside world and vice versa, making them a critical component in network infrastructure for organizations.

The other options do not accurately reflect the role of an Edge Router. For instance, an internal router focuses on managing traffic within a specific network rather than connecting to external ones. A router used solely for local network traffic does not interact with external networks, while a wireless access point primarily functions to extend a network's wireless coverage and does not provide routing capabilities by itself.