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Question 209 - PCNSE discussion

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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?

A.
Administrative distance
Answers
A.
Administrative distance
B.
Round Robin load balancing
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B.
Round Robin load balancing
C.
Order in the routing table
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C.
Order in the routing table
D.
Metric
Answers
D.
Metric
Suggested answer: A

Explanation:

Administrative distance is the measure of trustworthiness of a routing protocol. It is used to determine the best path when multiple routes to the same destination exist. The route with the lowest administrative distance is chosen as the best route.

When the same route appears in the routing table three times using three different protocols, the mechanism that determines which route the firewall chooses to use is the administrative distance.

This is explained in the Palo Alto Networks PCNSE Study Guide in Chapter 6: Routing, under the section "Route Selection":

"Administrative distance is a value assigned to each protocol that the firewall uses to determine which route to use if multiple protocols provide routes to the same destination. The route with the lowest administrative distance is preferred."

asked 23/09/2024
Louis Reeves
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