Palo Alto Networks Certified Network Security Engineer (PCNSE) — Question 497

Which function does the HA4 interface provide when implementing a firewall cluster which contains firewalls configured as active-passive pairs?

Answer options

• A. Perform session cache synchronization for all HA cluster members with the same cluster ID.
• B. Perform synchronization of sessions, forwarding tables, and IPSec security associations between firewalls in an HA pair.
• C. Perform packet forwarding to the active-passive peer during session setup and asymmetric traffic flow.
• D. Perform synchronization of routes, IPSec security associations, and User-ID information.

Correct answer: A

Explanation

The correct answer is A because the HA4 interface is specifically designed to enable session cache synchronization among HA cluster members with a shared cluster ID, ensuring seamless failover. Options B, C, and D describe other functions that are not the primary role of the HA4 interface in an active-passive setup.