Which two mechanisms help prevent a split brain scenario in an Active/Passive High Availability (HA) pair?
(Choose two.)
Correct Answer: B,E
Explanation/Reference:
E: For firewalls without dedicated HA ports, select two data interfaces for the HA2 link and the backup HA1 link. Then, use an Ethernet cable to connect these in-band HA interfaces across both firewalls.
Use the management port for the HA1 link and ensure that the management ports can connect to each other across your network.
B:
1. In Device > High Availability > General, edit the Control Link (HA1) section.
2. Select the interface that you have cabled for use as the HA1 link in the Port drop down menu. Set the IP address and netmask.Enter a Gateway IP address only if the HA1 interfaces are on separate subnets. Do not add a gateway if the devices are directly connected.
References: https://www.paloaltonetworks.com/documentation/60/pan-os/pan-os/high-availability/ configure-active-passive-ha