Which VxRail model supports 25 Gb NICs?

There is a request to add new disks to an existing VM residing on a VxRail vSAN that you manage. One disk is
250 GB. The VM is using the vSAN default storage policy.
How many vSAN objects will be created?

As an administrator, you are asked to view the health of the vSAN on the VxRail cluster. You select the VxRail cluster in the Navigation panel in vCenter.
Under which tab could you run the vSAN health check?

An application consisting of two VMs must be keep on two separate hosts.
Which VMware feature would enable this?

Using VxRail Manager, what information can you find under the physical health view?