What does the letter C stand for in the routing table?

• A. Directly connected interfaces
• B. Static routes
• C. Learned dynamically from another router using the EIGRP routing protocol
• D. Learned dynamically from another router using the OSPF protocol

Answer: (A)

The routing table uses codes to show how each route was learned. The letter that marks a route as directly connected means the router has an interface on that network, and the route is automatically present once the interface has an IP address configured. In other words, the router knows how to reach that network because it’s attached to the same physical or logical segment. This is different from routes learned dynamically through a protocol like EIGRP or OSPF, or routes added manually as static routes. So the best description is a directly connected network.