What are two prerequisites for adding RDM disks to a VM? (Choose two.)

A vSphere Administrator is tasked with implementing a production VMware vSAN cluster and has followed the design and sizing guide to correctly size the environment.
Which two requirements represent valid VMware recommendations? (Choose two.)

A vSphere administrator has been tasked with enabling upstream failure detection for networking in an environment that does not support link state tracking.
Which statement is a VMware-recommended option?

A vSphere administrator sees the alarm:
vSphere HA virtual machine failed to failover
This occurred for a number of virtual machines on a particular ESXi host in a cluster with vSphere High Availability (HA) enabled. The virtual machines guest operating systems never reported a power event.
What occurred?

What three types of host bus adapters are supported for connecting to shared storage on an ESXi hosts?
(Choose three.)