An administrator needs to configure a security policy that controls VM-to-VM communication within a category...

What makes this a strong certification question is that several answers look technically related, but only one aligns with the exact behavior of Flow networking or Flow security. The correct response is D, meaning “Use deny-all intra-tier traffic configuration in the policy.”. The winning option is the one tied to the native Nutanix object or control that governs the outcome described in the scenario. This is a Flow policy design question, so categories, secured entities, rule direction, policy mode, and policy precedence matter more than simple IP connectivity assumptions.

Seen from a design perspective, the correct answer is the least ambiguous and most supportable implementation path inside Prism Central and AHV. Notice that A sounds plausible, but it does not align with the specific Flow policy object or precedence rule that controls this case. B sounds plausible, but it does not align with the specific Flow policy object or precedence rule that controls this case. For exam preparation, remember that Nutanix usually separates discovery from enforcement, routing from NAT, and access policy from identity mapping. Choosing the layer that truly owns the function is what leads to the right answer.