I thought the answer was "3" also, but found this here showing that "A cluster must contain at least two hosts."
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.avail.doc/GUID-BA85FEC4-A37C-45BA-938D-37B309010D93.html
vSphere HA needs a minimum of 2 hosts. vCenter HA is not the same thing. vCenter HA has three VMs (active, passive, and witness) that SHOULD run on three different hosts but don't technically HAVE to. This is a BS question.
This test directly contradicts itself on two different questions;Question #81Topic 1
What is the minimum number of ESXi hosts required to support vCenter High Availability?
A. 6
B. 3 Most Voted
C. 2
D. 4
Correct Answer: C 🗳️
Community vote distribution
vCenter High Availability (HA) protects vCenter Server against host and hardware failures.
What is the minimum number of ESXi hosts required to enable this capability?
A. 5
B. 7
C. 1
D. 3
Correct Answer: D 🗳️
Correct answer: B
A minimum of three ESXi hosts is strongly recommended.
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.avail.doc/GUID-8FD87389-8CC9-4298-8B08-A1526FB44524.html
For VCENTER YOU NEED 3 hosts în order to have HA.
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.avail.doc/GUID-8FD87389-8CC9-4298-8B08-A1526FB44524.html
B is correct.
"A minimum of three ESXi hosts is strongly recommended."
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.avail.doc/GUID-8FD87389-8CC9-4298-8B08-A1526FB44524.html
2 =
"Minimum 2 ESX hosts are required for setting up HA. However, to ensure redundancy and maximum Fault Tolerance protection, you should have a minimum of three hosts in the cluster."
https://docs.vmware.com/en/VMware-Smart-Assurance/10.1.0/sa-ui-platform-user-config-guide-101/GUID-FCB6D75D-4CFD-4406-88E5-2DE160EBFA3C.html
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