200-301 Question 326
Single answerA network administrator configures a static route with the following command: ip route 192.168.10.0 255.255.255.0 10.10.10.1 200. What is the purpose of the administrative distance value of 200 in this configuration?
- A
To ensure the route is used as a primary route
- B
To allow the route to act as a backup route if no better route exists in the routing table
- C
To prioritize this route over dynamically learned OSPF routes
- D
To prevent the route from being advertised to other routers
Show answer and explanation
Correct answer: B
Explanation
A floating static route is a static route configured with a higher administrative distance than the primary route. This ensures that the static route is only used as a backup route when the primary route (e.g., OSPF or EIGRP) is unavailable. In this scenario, the administrative distance of 200 ensures the static route will only be used if no other route with a lower administrative distance exists in the routing table.
- A. Incorrect.
This is incorrect because a static route with an administrative distance of 200 will not be used as a primary route. Lower administrative distances are preferred.
- B. Correct.
This is correct because an administrative distance of 200 makes this static route a floating static route, meaning it will only be used if no other route with a lower administrative distance is available.
- C. Incorrect.
This is incorrect because OSPF routes typically have an administrative distance of 110, which is lower than 200. A static route with an administrative distance of 200 would not take priority over OSPF routes.
- D. Incorrect.
This is incorrect because the administrative distance does not control whether the route is advertised. Route advertisement is managed by the routing protocol or static route redistribution configurations.