Exam NCP-NS-7.5 Topic 1 Question 104 Discussion

A reliable method here is to translate the scenario into Nutanix terms-VPC routing, external connectivity, policy scope, identity mapping, or upgrade readiness-and then choose the answer that directly addresses that domain. The correct response is A, meaning "Review the Alerts and Events in Prism Central to confirm if the affected host shows NIC or uplink errors.". MTU planning matters because encapsulation adds overhead.
When overlay, Geneve, VXLAN, or IPSec is present, a path that looks healthy at 1500 bytes can still fragment or drop larger frames unless the underlay and endpoints are sized correctly. 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.
Notice that B is a disruptive action and does not address the actual control-plane or policy requirement being tested. C does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. The key takeaway is that Flow is intentionally modular. Networking objects determine reachability, security objects determine permission, and lifecycle steps determine supportability.
Mixing those layers usually produces the distractor answers.