From a Nutanix exam perspective, this question is really testing whether the administrator understands the control point that actually governs the behavior shown in the scenario. The correct response is B, meaning “The Allow All IPv6 option in the policy was selected.”. An Isolation Policy is built to stop communication between defined groups. Unlike an application policy, it is intended to create a hard boundary, making it the correct choice when the requirement is “no traffic between these entities.” Application Policies are the most appropriate way to model legitimate workload communication in a tiered application. They allow administrators to express which sources, destinations, and services are required instead of relying on broad network access. 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. C sounds plausible, but it does not align with the specific.