What are two requirements to enable EVC in a vSphere DRS cluster? (Choose two.)

Question

Options

• ACPU must be in the same family and of the same speed.
• BCPUs must be from the same vendor.
• CEVC must use the lowest possible baseline supported by the hardware.
• DNo VMs may be running in the cluster.

• A
  5% (1)
• B
  89% (17)
• D
  5% (1)

Explanation

Enhanced vMotion Compatibility (EVC) masks CPU feature differences between hosts so VMs can vMotion freely across the cluster. Two hard requirements apply: (B) All hosts must use CPUs from the same vendor - you cannot mix Intel and AMD hosts in an EVC-enabled cluster because their instruction sets are fundamentally incompatible and no common baseline exists across vendors. (C) The EVC baseline must be set to the lowest CPU feature set supported by ALL hosts in the cluster. This ensures every host can present the same masked CPU feature set to VMs, which is the whole point of EVC. Option A is incorrect because CPU speed does not matter - EVC is about CPU feature flags, not clock frequency. Option D is incorrect in modern vSphere (6.0+): you can enable EVC on a cluster that already has powered-on VMs, provided those VMs' virtual CPU feature sets fall within the chosen baseline; vSphere will simply require non-compliant VMs to be powered off and back on before they benefit from EVC.

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