Nutanix NCS-CORE Online Practice Questions and Exam Preparation

Nutanix NCS-CORE Online Questions & Answers

• Question 1:

  A consultant is not able to run the As-Built Tool for a technical reason.

  What action should the consultant take to gather information and provide customer documentation?

  A. Manually create documentation using As-Built document template.
  B. Use RVTools for vSphere and Hyper-V deployments.
  C. Create a support case on behalf of a customer.
  D. Access portal.nutanix.com, search Software Documentation.
  A. Manually create documentation using As-Built document template.

  ---

  explanation:

  Explanation/Reference:

  If the As-Built Tool cannot be run due to technical reasons, the next best action for the consultant is to manually create documentation using an As-Built document template. This approach ensures that documentation is still provided to the customer detailing the setup, configuration, and operational state of their environment, which is crucial for ongoing management and future audits. This method is proactive and ensures customer needs are met despite technical setbacks. References: Nutanix Technical Documentation Guidelines, Best Practices in Nutanix System Documentation.

• Question 2:

  According to Nutanix best practices, which interface configuration should be used when setting up the default bond?

  A. One 10G uplink only
  B. 10G uplinks only or 25G uplinks only
  C. One 10G uplink paired with one 25G uplink
  D. One 1G uplink paired with one 10G uplink
  B. 10G uplinks only or 25G uplinks only

  ---

  explanation:

  Explanation/Reference:

  According to Nutanix best practices for network configuration, it is recommended to use either:

  10G uplinks only: This provides sufficient bandwidth for typical data center operations.

  25G uplinks only: This option is suitable for higher bandwidth requirements. Mixing uplinks with different speeds, such as 10G and 25G, is not recommended as it can lead to non-optimal performance and complexity in handling traffic.

  References:

  Nutanix Bible (https://www.nutanixbible.com), specifically sections discussing network interface configurations.

  Nutanix Network Administration Guide, which details best practices for network setup.

• Question 3:

  During Foundation, all nodes are imaged successfully. The cluster creation step fails. The consultant troubleshoots the issue and verifies that all Hosts and CVMs are up and running and responding to network pings.

  Which method should the consultant select to create the cluster?

  A. Log into one of the hosts and run the cluster create command.
  B. Image the Bare Metal nodes.
  C. Log into one of the CVMs and run the cluster create command.
  D. Factory reset the nodes and re-start the Foundation process.
  C. Log into one of the CVMs and run the cluster create command.

  ---

  explanation:

  Explanation/Reference:

  After confirming that all nodes (Hosts and CVMs) are operational and network accessible, the next step in troubleshooting a failed cluster creation process is to use one of the CVMs to manually initiate the cluster creation. This is done using

  the command cluster create from a CVM, which allows you to establish the cluster management and data services provided by Nutanix. This approach is recommended when the Foundation process has successfully imaged the nodes but the

  automatic cluster creation has failed.

  References:

  Nutanix University - NCS-Core 6.8 Learning Path

  The Nutanix Bible, Cluster Initialization chapter (https://www.nutanixbible.com/)

• Question 4:

  Refer to the exhibit.

  

  User 1 and User 2 belong to the AAPM group

  What are two descriptions of how Files perform quota management? (Choose two.)

  A. User 2 can continue to add another 3GB file but will receive a daily notification email.
  B. User 1 can continue to add another 5GB file but will receive a daily notification email.
  C. User 1 can add an 8GB file to the share without receiving notification.
  D. User 2 can add an 8GB file without receiving a notification email.
  B. User 1 can continue to add another 5GB file but will receive a daily notification email.
  D. User 2 can add an 8GB file without receiving a notification email.

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  explanation:

  Explanation/Reference:

  https://portal.nutanix.com/page/documents/details?targetId=Files-v3_6:fil-file-server-quotas-c.html#nconcept_amp_xsm_bx

• Question 5:

  During the Foundation imaging process, nodes are successfully imaged, but the cluster creation fails.

  Which log should the consultant review to determine the cause?

  A. service.log
  B. foundation.out
  C. first_boot.log
  D. genesis.out
  B. foundation.out

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  explanation:

  Explanation/Reference:

  During the Nutanix Foundation process, if imaging succeeds but cluster creation fails, the foundation.out log is the primary resource for investigating issues related to cluster creation. This log file contains detailed information about the steps

  undertaken by the Foundation process, including any errors or issues encountered during the cluster creation phase, making it invaluable for diagnosing problems that prevent successful cluster configuration.

  References:

  Nutanix Bible (https://www.nutanixbible.com), particularly the sections on troubleshooting with logs.

  Nutanix University: NCS-Core 6.8 Training (https://university.nutanix.com), where log file analysis is discussed in the context of deployment troubleshooting.

• Question 6:

  In preparing to install a new cluster for a company, a consultant needs to complete an installation worksheet.

  Which values must be documented prior to initial base system setup?

  A. Block Serial Numbers
  B. Hypervisor, CVM, and IPMI IP Addresses
  C. DNS and NTP IP Addresses
  D. Prism Central IP Address
  C. DNS and NTP IP Addresses

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  explanation:

  Explanation/Reference:

  Prior to the initial base system setup for a new cluster installation, the consultant needs to document several critical infrastructure details. Among the most important are the DNS and NTP IP addresses (C). These addresses are crucial because they ensure that all nodes within the cluster can resolve domain names properly and synchronize their clocks accurately, which is vital for cluster operations and management. Proper DNS and NTP configurations help prevent many common issues related to name resolution and time synchronization that could affect the performance and stability of the cluster.References: Nutanix Installation Prep Guide, Nutanix Network Configuration Requirements.

• Question 7:

  A VM does not have enough resources for the demand, which leads to performance bottlenecks. The VM is exhibiting one or more of following baseline values, based on the past 30 days:

  1.

  CPU usage>; 90% (moderate), 95% (high)

  2.

  CPU ready time>; 5%, 10%

  3.

  Memory usage>; 90%, 95%

  4.

  Memory swap rate>; 0 Kbps (no moderate value)

  Which type of VM is being described?

  A. Constrained VM
  B. Bully VM
  C. Inactive VM
  D. Over-provisioned VM
  A. Constrained VM

• Question 8:

  A consultant asks a customer to verify the ToR Switch data port configuration was done according to Nutanix best practices. The switch configuration must simplify future deployments and expansions.

  Which two configuration actions will satisfy this requirement? (Choose two.)

  A. Disable multicast and broadcast flood optimizations.
  B. Configure the CVM and hypervisor host VLAN as the native.
  C. Use a tagged VLAN for the CVM and hypervisor hosts.
  D. Configure the connected switch ports as access.
  A. Disable multicast and broadcast flood optimizations.
  C. Use a tagged VLAN for the CVM and hypervisor hosts.

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  explanation:

  Explanation/Reference:

  For a Nutanix cluster configuration that simplifies future deployments and expansions, disabling multicast and broadcast flood optimizations (A) and using a tagged VLAN for the CVM and hypervisor hosts (C) are the best practices. Disabling these optimizations helps in reducing unnecessary network traffic and potential broadcast storms in a growing environment. Using tagged VLANs for CVM and hypervisor hosts ensures proper network segmentation and scalability, allowing for easier management and expansion without reconfiguring the native network setup for each expansion or deployment.References: Nutanix Network Configuration Best Practices, Nutanix Deployment Guide.

• Question 9:

  An administrator needs to expand a cluster based on AHV and running on Nutanix G5 hardware with a new Nutanix G7 system. The cluster is running AOS 5.10 but the operation fails when expanding the cluster. AOS is running on the new system. There are no issues discovering the node.

  Why is the operation failing?

  A. AOS version running on G7 is older than the version on the cluster.
  B. Foundation software has not been updated on the cluster.
  C. G7 hardware cannot be added to a G5 cluster.
  D. EVC needs to be configured before cluster expansion
  A. AOS version running on G7 is older than the version on the cluster.

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  explanation:

  Explanation/Reference:

  Ref: https://next.nutanix.com/installation-configuration-23/product-mixing-restrictions-37231

• Question 10:

  While trying to upgrade AOS in a cluster, a consultant receives a warning message that there are two powered-on VMs that need to be powered off for the upgrade to proceed.

  What would cause this warning to be issued?

  A. Upgrading a single-node cluster requires the VMs to be shut down.
  B. Upgrading a two-node cluster requires the VMs to be shut down.
  C. There are not enough resources left in the single-node cluster.
  D. There are not enough resources left in the two-node cluster.
  B. Upgrading a two-node cluster requires the VMs to be shut down.

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  explanation:

  Explanation/Reference:

  The warning message about powering off VMs during an AOS upgrade in a two-node cluster is issued because, in smaller clusters such as two-node configurations, resource availability and redundancy are limited. To safely perform an upgrade without risking service disruption, the VMs need to be powered down to free up resources and ensure that there is sufficient capacity to handle the cluster operations during the upgrade process.References: Nutanix Bible, NCS-Core

  6.8 course content, and Nutanix upgrade best practices.