If a destination is reachable via both a directly connected route and a dynamically learned route, which is typically preferred?

If a destination is reachable via both a directly connected route and a dynamically learned route, which is typically preferred?

• A. RIP Route
• B. Directly Connected Route
• C. OSPF Route
• D. Static Route

Answer: (B)

The main idea here is how a router decides which path to use when it has two options: a route it can reach directly on its own interface and another learned through a routing protocol. The decision is governed by administrative distance, which is how much the router trusts a given source of routing information. A directly connected route has the lowest possible trust value (administrative distance of 0) because the router knows that network is attached to one of its own interfaces. That makes it the most reliable and fastest path to reach the destination, so it is chosen over any route learned via a dynamic protocol, which have higher administrative distances. If the directly connected interface remains up, packets are forwarded via that local path. If that interface goes down, the directly connected route would disappear, and the router would then rely on the dynamically learned route (if available) as the next best option.

The main idea here is how a router decides which path to use when it has two options: a route it can reach directly on its own interface and another learned through a routing protocol. The decision is governed by administrative distance, which is how much the router trusts a given source of routing information. A directly connected route has the lowest possible trust value (administrative distance of 0) because the router knows that network is attached to one of its own interfaces. That makes it the most reliable and fastest path to reach the destination, so it is chosen over any route learned via a dynamic protocol, which have higher administrative distances.

If the directly connected interface remains up, packets are forwarded via that local path. If that interface goes down, the directly connected route would disappear, and the router would then rely on the dynamically learned route (if available) as the next best option.