Nutanix NCP-DB Exam - Topic 3 Question 42 Discussion

Actual exam question for Nutanix's NCP-DB exam

Question #: 42
Topic #: 3

[All NCP-DB Questions]

Which NDB HA control plane VM is upgraded first during an NDB upgrade?

ANDB Server

BLeader NDB API Server

CLeader HAProxy

DNDB Agent VMs

Show Suggested Answer

Suggested Answer: B

During an NDB upgrade, the upgrade process follows a specific order to maintain stability and HA. The Leader NDB API Server is upgraded first. This server coordinates API requests and ensures the control plane remains operational. Upgrading the leader first minimizes disruption, as subsequent components (e.g., other API servers, HAProxy) rely on its leadership role. Once the leader is upgraded, the remaining NDB HA control plane VMs (e.g., follower API servers, HAProxy) are updated in sequence.

Other options are incorrect:

A . NDB Server: Refers to the main NDB instance, not upgraded first.

C . Leader HAProxy: Upgraded after API servers to maintain load balancing.

D . NDB Agent VMs: Upgraded last, as they are client-side components.

Thus, the verified answer is B, reflecting the upgrade sequence.

Official Nutanix Database Automation Reference:

Nutanix Database Management & Automation (NDMA) course, Module 2: Deploying and Configuring an NDB Solution, Lesson 2.4: Updating NDB.

Nutanix Certified Professional - Database Automation (NCP-DB) v6.5 Knowledge Objectives, Section 2: Deploy and Configure an NDB Solution, Objective 2.3: Perform NDB Updates (applicable to v6.10).

Nutanix NDB Administration Guide: 'NDB Upgrade Process' section.

by Patria at Jan 05, 2026, 05:16 AM

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Hubert

3 days ago

D) NDB Agent VMs? Really? That's like asking to upgrade the sidekick before the superhero.

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Yvonne

8 days ago

I always get the NDB HA control plane VMs mixed up. This question is a real head-scratcher!

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Tiara

13 days ago

C) Leader HAProxy is the correct answer. The leader HAProxy is upgraded first during an NDB upgrade.

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Tamra

18 days ago

I believe the NDB Agent VMs are usually upgraded last, but I can't remember which one comes first. Was it the Leader NDB API Server?

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Jacquline

23 days ago

I’m a bit confused about this one. I thought the Leader HAProxy was crucial for the upgrade process, but I can't recall the exact order.

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Oliva

28 days ago

I remember discussing the upgrade order, and I feel like the NDB Server was mentioned as being upgraded last.

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Craig

1 month ago

I think it might be the Leader NDB API Server, but I'm not entirely sure. We practiced a similar question in class.

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Tom

1 month ago

I'm a bit confused by the wording of this question. "Control plane VM" - not sure exactly what that refers to. Guess I'll have to use my knowledge of the NDB architecture to figure this out.

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Beth

1 month ago

Okay, I think I've got a strategy here. The key is understanding the NDB HA setup and the order of upgrades. I'll review my notes on that before answering.

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Meaghan

2 months ago

Not sure about this one. The question mentions the "control plane" so I'm guessing it's not the NDB Server itself. Might be one of the other components like the API Server or HAProxy.

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Georgene

2 months ago

I'm pretty sure the NDB Server is upgraded first, since that's the core component. But I'll double-check the details to be sure.

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Cory

2 months ago

Hmm, this one seems tricky. I'll need to think through the NDB architecture and upgrade process carefully.

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