200-301 Question 304
Single answerA network administrator is troubleshooting a routing issue in a multi-protocol environment. The router is configured with routes learned via OSPF, EIGRP, and a static route to the same destination. All routes have the same prefix and subnet mask. Which route will the router prefer to reach the destination?
- A
The route learned via OSPF
- B
The route learned via EIGRP
- C
The static route
- D
The route learned via RIP
Show answer and explanation
Correct answer: C
Explanation
The administrative distance (AD) is a measure of trustworthiness for routes learned by different routing protocols. Lower AD values are preferred over higher ones. In this scenario, the static route has the lowest AD of 1, followed by EIGRP (90), OSPF (110), and RIP (120). Therefore, the static route will be selected by the router to reach the destination.
- A. Incorrect.
OSPF has an administrative distance of 110, making it less preferred than EIGRP (90) and a static route (1).
- B. Incorrect.
EIGRP has an administrative distance of 90, which is higher than a static route's administrative distance of 1, so it will not be selected.
- C. Correct.
Static routes have the lowest administrative distance of 1, making them the most preferred choice in this scenario.
- D. Incorrect.
RIP has the highest administrative distance of 120 among the options, so it will not be selected.