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Exam NCP-NS-7.5 Topic 1 Question 78 Discussion

Actual exam question for Nutanix's NCP-NS-7.5 exam
Question #: 78
Topic #: 1
An administrator has a VPC with multiple overlay subnets and a VPN gateway configured for site-to-site connectivity. During testing, the administrator noticed fragmented packets and poor performance. Which configuration change resolves this issue without disabling VPN?

Suggested Answer: C Vote an answer

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 C, meaning "Reduce MTU to 1356 on guest VMs". 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. 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. By contrast, A does not fit because it targets a different layer of the Nutanix networking and security stack than the one causing the outcome here. B 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.

by Paddy at Jul 14, 2026, 05:01 AM

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