Which statements about the firmware upgrade process on an active-active HA cluster are true? (Choose two.)

In a FortiGate HA cluster, the firmware image only needs to be uploaded to the primary (master) FortiGate device, which then automatically synchronizes and pushes the firmware to all secondary (slave) devices in the cluster.

During a firmware upgrade in an HA cluster, all FortiGate devices in the cluster, including both primary and secondary units, are rebooted one by one as part of the upgrade process, managed by the U-upgrade feature to prevent service interruption.

Uninterruptable Upgrade (U-upgrade) is a feature designed for HA clusters to minimize downtime during firmware upgrades, allowing the cluster to continue processing traffic. In active-active HA, this capability is typically enabled by default to ensure high availability during maintenance by upgrading units sequentially.

During a firmware upgrade on an active-active HA cluster, the cluster temporarily operates in active-passive mode, meaning that traffic load balancing is temporally disabled. This ensures a smooth upgrade process by preventing traffic from being directed to a device that is currently offline or rebooting, maintaining service continuity on the active unit.