How does a Palo Alto Networks NGFW respond when the preemptive hold time is set to 0 minutes during configuration of route monitoring?

Question

Options

• AIt does not accept the configuration.
• BIt accepts the configuration but throws a warning message.
• CIt removes the static route because 0 is a NULL value
• DIt reinstalls the route into the routing information base (RIB) as soon as the path comes up.

• B
  4% (1)
• C
  4% (1)
• D
  93% (25)

Explanation

Route monitoring on PAN-OS allows the firewall to remove a static route from the RIB when a monitored path (e.g., an IP host or next hop) becomes unreachable. The 'preemptive hold time' defines how long the firewall waits after a monitored path recovers before it reinstalls the route back into the RIB. This timer prevents route flapping - if a path bounces up and down, you want to wait for stability before relying on it. Setting this value to 0 means there is no hold time: the firewall immediately reinstalls the route the moment the monitored path comes back up. The firewall accepts 0 as a valid value without warnings or errors, making options A and B incorrect. Option C is wrong because 0 is a valid numeric value, not NULL.

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