Palo Alto Networks Certified Network Security Engineer (PCNSE) — Question 394

The same route appears in the routing table three times using three different protocols.

Which mechanism determines how the firewall chooses which route to use?

Answer options

• A. Administrative distance
• B. Metric
• C. Order in the routing table
• D. Round Robin load balancing

Correct answer: A

Explanation

The correct answer is A, Administrative distance, as it is the value that routers use to determine the trustworthiness of routes learned through different protocols. While B, Metric, is used to select the best path among routes from the same protocol, C, Order in the routing table, and D, Round Robin load balancing, do not affect the choice between routes from different protocols.