Which two pieces of information are synchronized between FortiGate HA members?

The correct answer highlights that IPsec security associations are indeed synchronized between FortiGate HA (High Availability) members. In an HA cluster, synchronization ensures that all members have a consistent view of active connections and security policies, allowing for seamless failover and continuity of service. IPsec security associations include the parameters necessary for establishing secure connections over IPsec tunnels, and these need to be synchronized to maintain the reliability and security of communication when a primary unit fails and a secondary unit takes over.

The other choices do not exhibit the same requirement for synchronization. For instance, while DHCP leases can be important for maintaining client connections, they are not shared due to the dynamic nature of the leases specific to the unit handling them. Static routing configurations generally do not need synchronization because they can independently operate based on the routing situation of each FortiGate unit, and the cluster's configuration allows for redundancy and management without needing to replicate this data across all devices. Similarly, firewall policies are typically synchronized, but the question emphasizes IPsec security associations specifically, which are critical for maintaining the integrity and state of secure connections.

Understanding the synchronization aspect in an HA environment is vital for maintaining network services without interruption during a failover event.