PCNSA · Question #32
Which two statements are correct regarding multiple static default routes when they are configured as shown in the image? (Choose two.)
The correct answer is C. Path monitoring determines if route is useable D. Route with lowest metric is actively used. When multiple static default routes are configured, path monitoring is crucial for determining their usability, and the route with the lowest metric (highest preference) is actively used as the primary path.
Question
Which two statements are correct regarding multiple static default routes when they are configured as shown in the image? (Choose two.)
Exhibit
Options
- APath monitoring does not determine if route is useable
- BRoute with highest metric is actively used
- CPath monitoring determines if route is useable
- DRoute with lowest metric is actively used
How the community answered
(31 responses)- A6% (2)
- B6% (2)
- C87% (27)
Why each option
When multiple static default routes are configured, path monitoring is crucial for determining their usability, and the route with the lowest metric (highest preference) is actively used as the primary path.
Path monitoring is specifically designed to determine the usability and liveness of a route's next-hop or destination, making this statement incorrect.
The route with the *lowest* metric (or highest priority/preference depending on the routing protocol) is actively used, not the highest metric.
Path monitoring (also known as link monitoring or route monitoring) actively probes the reachability of a next-hop IP address or destination, allowing the firewall to dynamically remove an unreachable route from the routing table and failover to an alternate path.
In routing, when multiple routes exist for the same destination, the route with the lowest administrative distance or metric is always preferred and actively used by the router or firewall as the primary path.
Concept tested: Static routes, path monitoring, route metrics
Source: https://docs.paloaltonetworks.com/pan-os/11-1/pan-os-admin/network/static-routes/configure-a-path-monitor-for-a-static-route
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