Exam PCNSE topic 1 question 215 discussion

A AND D. having duplicate routes is one of the most common mistakes.

I think A AND D since you can have a duplicate static route in the RIB but not in the FIB since the routes have different metrics/hops. I think this is a poorly written question and left out info related to the question. Or maybe it was transcribed incorrectly from the source, it just seem the question is incomplete and missing information

I chose "AD", because the "no install" option means that the admin never wanted to use that route. A duplicate static route can be configured with a different next hop and metric!

you can no install in static routing by changing the unicast drop list to no install

Ans: B & D. When you Configure Path Monitoring for a Static Route, the firewall uses path monitoring to detect when the path to one or more monitored destination has gone down. The firewall can then reroute traffic using alternative routes. The firewall uses path monitoring for static routes much like path monitoring for HA or policy-based forwarding (PBF) https://docs.paloaltonetworks.com/pan-os/11-0/pan-os-networking-admin/static-routes/static-route-removal-based-on-path-monitoring

I am agreed there is no duplicate and disable routes

How can path monitoring effects static routes?

you cant disabling a route and you can't create a duplicate static route

If "duplicate static route" means same route with "different next hop", A could be the reason.

B and D

When you Configure Path Monitoring for a Static Route, the firewall uses path monitoring to detect when the path to one or more monitored destination has gone down. The firewall can then reroute traffic using alternative routes.

BD is correct "No Install" is used if you do not want to install the route in the forwarding table. And if path monitoring on the route fails it also won't be used