Exam NCP-NS-7.5 Topic 1 Question 8 Discussion

This item is best solved by thinking like an operator in Prism Central: first identify whether the problem is design, control-plane state, or policy logic, then pick the option tied to that layer. The correct response is A, meaning "MTU on guest VMs exceeds recommended size for IPSec.". A Floating IP is the normal mechanism for exposing a workload in an overlay-backed VPC to external clients. It preserves internal VM addressing while publishing a reachable external address through the VPC's north-south path. A VPN showing an "Up" state confirms tunnel establishment, but it does not guarantee end-to-end reachability.
Actual traffic flow still depends on route advertisement or static routing, proper prefixes, and correct MTU considerations. Operationally, Flow Virtual Networking should be checked from the control plane outward:
gateway health, peering state, route advertisement, ERP coverage, external path, and MTU when encapsulation is involved. By contrast, B does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. C does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. For exam.