Which two options can be used for vCenter Server 6.x database availability?
(Choose two.)
A. Microsoft SQL Server 2012/2014 AlwaysOn Availability Groups (AG)
B. vCenter Server Watchdog
C. NSX load balancer
D. vCenter Server Heartbeat
E. Microsoft Windows Server Failover Clustering
no, this is for vCenter Server 5.x
B&E are correct
As written in the KB:
Microsoft SQL Server 2012/2014 AlwaysOn Availability Groups (AG) for high availability and disaster recovery solution (Non-shared disk configuration)
Microsoft SQL Server 2012/2014 AlwaysOn Failover Cluster Instance (FCI) for high availability, and Availability Groups (AG) for disaster recovery solution (Shared Disk Configuration).
so A & E is right