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Guide for NCS-Core: Nutanix Certified Services Core Infrastructure Professional

Quiz NCS-Core: Nutanix Certified Services Core Infrastructure Professional

Updated on 2026/09/23

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Guide for NCS-Core: Nutanix Certified Services Core Infrastructure Professional

Updated on 2026/09/23

Randomized | 10 Questions per Test | 20 Minutes | 70% to pass

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4.8

Quiz

Question 1/101/10

An administrator responsible for a VDI environment needs to investigate reports of slow logins. The
administrator finds that increasing the number of vCPUs from 2 to 4 will reduce the login times.
Production workloads are consuming 75% of the host CPU on the cluster. The administrator increases
the vCPU count on all of the VDI VMs.
What are two impacts on the cluster? (Choose two.)

Select multiple answer: (Choose 2)Select the answer

2 correct answers

Increase CPU utilization%

Increase CPU ready%

Increase memory utilization%

Increasing CPU counts will decrease memory utilization

Quiz

Question 2/102/10

An administrator is using Nutanix Move to migrate a Windows VM from ESXi to AHV. Automated
guest preparation is failing with an error:
Account has UAC enabled error
The administrator is using the local built-in administrator account for the Windows VM Admin
approval mode must remain enabled.
What should the administrator do to continue with the migration with Nutanix Move?

Select the answer:Select the answer

1 correct answer

Use a Domain Admin account for the Windows VM

Reboot the Windows VM and try the migration again

Follow manual VM preparation guidelines

Place Windows VM in Maintenance Mode

Quiz

Question 3/103/10

A VM is exhibiting one or more of the following baseline values based on the past 30 days:
• CPU usage < 20%
• CPU ready time < 5%
• Memory usage < 50% (moderately) or < 20% (severely)
• Memory swap rate = 0 Kbps
Which type of VM is being described?

Select the answer:Select the answer

1 correct answer

Constrained VM

Inactive VM

Bully VM

Over-Provisioned VM

Quiz

Question 4/104/10

An administrator receives reports that VDI desktop performance in an 8-node Nutanix VDI
environment is poor. Opening applications takes between 1 and 2 minutes.
When investigating the issue, the following conditions are found:
• Cluster memory utilization: 80%
• Cluster SSD utilization: 70%
• Average VM CPU Wait Time: 11%
• CVM CPU utilization: 75%
Which action should be taken to improve VDI performance?

Select the answer:Select the answer

1 correct answer

Increase the amount of SSD storage in the cluster.

Add memory to the nodes in the cluster.

Add CPU resources to the cluster.

Increase the number of vCPU cores allocated to the CVM.

The correct answer is C. Add CPU resources to the cluster.
This question is about identifying the likely performance bottleneck in a Nutanix VDI environment based on the reported cluster statistics.
Let’s look at each metric:
- Cluster memory utilization: 80%
- This is somewhat high, but not automatically a problem.
- Memory pressure would usually become more suspicious if it were much closer to saturation or if there were signs of swapping or ballooning.
- Cluster SSD utilization: 70%
- This is also not excessive.
- If storage were the bottleneck, you would expect much higher utilization, latency symptoms, or storage-related wait issues.
- Average VM CPU Wait Time: 11%
- This is the key indicator.
- CPU wait time reflects how often VMs are ready to run but must wait for available CPU resources.
- An 11% average CPU wait time indicates CPU contention, which can cause sluggish application launches and poor desktop responsiveness.
- CVM CPU utilization: 75%
- The Controller VM is using a fair amount of CPU, but this alone does not point to the primary issue.
- CVM CPU can matter, but the symptom here is broader VDI slowness and high VM CPU wait time, which points more strongly to insufficient compute resources overall.
Why C is correct:
- In a VDI environment, poor application launch performance and high VM CPU wait time usually indicate that the cluster needs more CPU capacity.
- Adding CPU resources reduces contention and lowers wait time, improving desktop responsiveness.
Why the other options are not best:
A. Increase the amount of SSD storage in the cluster.
- SSD utilization is only 70%, so storage capacity does not appear to be the limiting factor.
- This would help only if storage were near full or latency was high.
B. Add memory to the nodes in the cluster.
- Memory utilization is 80%, which is elevated but not the strongest signal.
- There is no indication of memory starvation, swapping, or ballooning as the main cause.
D. Increase the number of vCPU cores allocated to the CVM.
- This might help if the CVM were CPU constrained, but the question points to VM CPU wait time across the VDI workload.
- Increasing CVM vCPUs does not directly solve compute contention for user VMs.
Conclusion:
The main symptom is elevated VM CPU wait time, which indicates CPU contention. The best action is to add CPU resources to the cluster.
Answer: C

Right Answer: C

Quiz

Question 5/105/10

An administrator has a custom backup application that requires a 2TB disk and runs in Windows.
Throughput is considerably lower than expected.
The application was installed on a VM with the following configuration:
• Four vCPUs with one core/vCPU
• 4GB of Memory
• One 50GB vDisk for the Windows installation
• One 2TB vDisk for the application
What is the recommended configuration change to improve throughput?

Select the answer:Select the answer

1 correct answer

Increase the number of cores per vCPU

Increase the vCPUs assigned to the VM

Span the 2TB disk across four vDisks

Add 4GB of memory to the VM

Quiz

Question 6/106/10

A customer recently set up Async Replication between Site A and Site B. The customer wants to
conduct a planned failover and clicks Activate on Site B.
The customer then runs the following command on Site A:
ncli pd deactivate_and destroy_vms name=<protection_domain_name>
What does this do to the customer environment?

Select the answer:Select the answer

1 correct answer

VMs get deleted from Site B. and the protection domain is now Active.

VMs are powered off on Site A and must be manually powered on at Site B.

VMs get deleted from Site A and the protection domain is no longer active.

Customer must then manually power off VMs at Site A and power them on at Site B.

Quiz

Question 7/107/10

An administrator needs to forecast infrastructure requirements for a new program and its associated
applications. Prior to the projected start of the new program, all existing applications will be
decommissioned.
How should the administrator perform this task?

Select the answer:Select the answer

1 correct answer

Check the Disregard Existing Workloads radio button in the Runway scenario.

Check the Disregard Existing Nodes radio button in the Runway scenario.

Add up the recovered workloads and manually remove from the Runway configuration.

Power down the workloads during a maintenance window and run the Capacity Runway.

Quiz

Question 8/108/10

A customer has a primary datacenter with 12 Nutanix blocks distributed across three racks. The
customer wants to achieve the most resiliency possible. They also have a datacenter in a branch
office that is 400 kilometers away from the primary datacenter.
Which two solutions should be used? (Choose two.)

Select multiple answer: (Choose 2)Select the answer

2 correct answers

Time Stream to a remote site

Async DR to a remote site

Rack awareness

Block awareness

The correct answers are B. Async DR to a remote site and C. Rack awareness.
Here is why:
The customer’s goal is to achieve the most resiliency possible in a primary datacenter that contains 12 Nutanix blocks spread across three racks. They also have a branch-office datacenter located 400 kilometers away, which makes it suitable as a remote disaster recovery target.
Let’s look at each option:
A. Time Stream to a remote site
Time Stream is a backup and recovery solution, but it is not the best fit here for maximizing resiliency in a Nutanix cluster across two datacenters. It is not the primary mechanism used for Nutanix disaster recovery in this scenario.
B. Async DR to a remote site
This is correct. Asynchronous disaster recovery to a remote site is the right choice when the secondary site is geographically distant, such as 400 kilometers away. It provides protection against site-level failures by replicating data to the branch office datacenter. Because synchronous replication is generally used only for much shorter distances, async DR is the appropriate resiliency solution here.
C. Rack awareness
This is correct. Rack awareness improves resiliency within the primary datacenter by ensuring data is distributed across different racks. Since the customer has 12 blocks across three racks, rack awareness helps protect against the failure of an entire rack. This is especially important for maximizing resiliency in the local site.
D. Block awareness
This is not the best answer in this case. Block awareness helps distribute data across different blocks, but the question specifically mentions three racks and asks for the most resiliency possible. Rack awareness is the more relevant and stronger fit for protecting against rack-level failures in this environment.
Why B and C together?
The best resiliency strategy here is a combination of local fault tolerance and remote disaster recovery:
- Rack awareness protects against hardware/rack failure within the primary datacenter.
- Async DR protects against a total site outage by replicating data to the distant branch office.
So the final answer is:
B. Async DR to a remote site
C. Rack awareness

Right Answer: B, C

Quiz

Question 9/109/10

An administrator inherits a new Nutanix environment and logs in to a CVM to check the network
configuration. The configuration is as follows:
Certification Exam NCS-Core: Nutanix Certified Services Core Infrastructure Professional Nutanix Nutanix-NCS-Core 4-104605651

Certification Exam NCS-Core: Nutanix Certified Services Core Infrastructure Professional Nutanix Nutanix-NCS-Core 4-104605651

Which action should the administrator take to improve network performance?

Select the answer:Select the answer

1 correct answer

Configure VLAN tagging both on br0 and br1 and their physical interfaces.

Add eth0 and eth1 to the br0-up bond

Configure balance-sib or balance-tcp mode for br0-up if switch configuration allows

Remove one 10 Gbs interface from br0-up to make sure all 10 Gbs can be used.

Quiz

Question 10/1010/10

An administrator is concerned that Prism will be inaccessible if Active Directory is unable to process
logins. Which method should the administrator use to access the cluster in the event of this type of
outage?

Select the answer:Select the answer

1 correct answer

Manage the cluster by using the "nutanix" user on the Prism leader CVM

Create and use an emergency local account on the cluster

Deploy an Active Directory server locally on the cluster

Manage the cluster remotely by downloading ncli to a remote workstation

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Quiz name:NCS-Core: Nutanix Certified Services Core Infrastructure Professional
Total number of questions:192
Number of questions for the test:50
Pass score:80%

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