The AI assistant suggests a different answer, which is B and D.
Reasoning:
Let's analyze each option based on HA behavior and the provided exhibit:

A. If port7 becomes disconnected on the secondary, both FortiGate devices will elect itself as primary.
- This statement is incorrect. Port7 is the HA heartbeat interface based on the exhibit. If a heartbeat interface fails on the secondary, it will not cause both FortiGates to become primary. The primary will continue to function as the primary, and the secondary will likely go into a down state.
B. If FGVM...649 is rebooted, FGVM...650 will become the primary and retain that role, even after FGVM...649 rejoins the cluster.
- This statement is correct. The exhibit shows "override: disabled". This means that if the primary (FGVM...649) goes down, the secondary (FGVM...650) will take over, and when FGVM...649 comes back up, it will remain as the secondary. With override disabled, the original primary will not automatically regain its primary role.
C. If no action is taken, the primary FortiGate will leave the cluster because of the current sync status.
- This statement is incorrect. The 'Sync Status' indicates an issue where configuration changes are not being synchronized to the secondary device. While this is an issue that should be addressed, it does not mean the primary device will leave the cluster automatically. HA cluster members do not leave the cluster due to synchronization issues; manual intervention or a more severe failure is typically required for a device to leave the cluster.
D. If a configuration change is made to the primary FortiGate at this time, the secondary will initiate a synchronization reset.
- This statement is correct. The 'Sync Status' indicates an unsynchronized state. When the devices get out of sync, the secondary can trigger a synchronization reset in an attempt to get back into sync. Based on Fortinet documentation, under HA, when configuration changes are made on primary, if it fails to synchronize with secondary, secondary will initiate a synchronization reset.

Therefore, the correct answers are B and D.

Reasons for not choosing A and C:

A is incorrect because a disconnected heartbeat on the secondary will not cause both devices to become primary.
C is incorrect because synchronization issues do not automatically cause a device to leave the cluster.

Title: FortiGate HA Administration Guide, https://docs.fortinet.com/document/fortigate/7.4.0/administration-guide/881711/ha-operation