What function does Enhanced vMotion Compatibility (EVC) provide?
A.
The ability to enable Fault Tolerance on virtual machines that are not members of a
cluster.
B.
The ability to use vMotion to migrate virtual machines between ESXi hosts with different
CPU vendors.
C.
The ability to replace manual CPU identification masks with an automated process
managed by the cluster.
D.
The ability to use vMotion to migrate virtual machines between hosts with identical CPUs
but different vSphere versions.
Explanation:
Different CPUs having different CPU features ok, if the lowest CPU feature set is opted for, but different vendors ? AMD versus Intel
B surely wrong
FT VMs are not possible outside a cluster -> A nok
CPU identification is masked for the Guest OS and a common CPU identification is set by the Kernel. Is activated via the cluster (DRS)
To me C is valid
D is even more valid, as I surely did vSPhere 4 to vSphere 5 migrations even outside a cluster (provided the same EVC mode is set)
Final answer D
D is wrong, the aim of EVC is to be able to present a common feature set even on host with different CPU features. Its primary aim is not to migrate between different vSphere versions though it is possible.
B should more precisely state CPU features (instead of vendors)
See KB 1010631 (for requirements as towards FT)