200-301 Question 327
Single answerA network administrator configures a static route on a router with a next-hop IP address of 192.168.1.1. They also configure a floating static route with a next-hop IP address of 192.168.2.1 and an administrative distance of 100. If the primary static route fails, what will happen?
- A
The router will drop all traffic destined for the network.
- B
The router will automatically start using the floating static route.
- C
The router will forward traffic to the secondary route only if the administrative distance is lower than 100.
- D
The router will use the floating static route only if the primary route is removed from the routing table.
Show answer and explanation
Correct answer: D
Explanation
A floating static route acts as a backup for a primary static route. It is configured with a higher administrative distance than the primary route, ensuring it is not used unless the primary route fails and is removed from the routing table. In this scenario, the router will only use the floating static route (with an administrative distance of 100) if the primary route is no longer available.
- A. Incorrect.
This is incorrect because a floating static route is specifically configured to take over when the primary static route fails, not to drop traffic.
- B. Incorrect.
This is incorrect because the floating static route does not take over automatically unless the primary route fails and is removed from the routing table.
- C. Incorrect.
This is incorrect because the administrative distance of 100 for the floating static route is already higher than the default static route (1). The router does not compare distances dynamically but relies on the failure of the primary route.
- D. Correct.
This is correct because a floating static route is designed to serve as a backup and only becomes active when the primary route is removed from the routing table (e.g., due to link failure).