Nutanix NCS-CORE Online Practice Questions and Exam Preparation

Nutanix NCS-CORE Online Questions & Answers

• Question 1:

  A company needs to replicate their VMs to a remote site and must have an RPO of less than 1 hour. When creating a protection domain, what should an administrator do to meet this requirement?

  A. Enable Async Replication with an RPO of 60 minutes
  B. Enable Near-Sync Replication with an RPO of 15 minutes
  C. Enable Entity Sync on the designated VMs
  D. Enable Availability Zones and send the VM to multiple targets
  A. Enable Async Replication with an RPO of 60 minutes

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  Explanation/Reference:

  https://portal.nutanix.com/page/documents/details?targetId=Web-Console-Guide-Prism-v5_10:sto-pd-guidelines-r.html

• Question 2:

  A consultant is installing Nutanix AOS on Cisco UCS.

  Which method should be used to install AOS on UCS hardware platforms?

  A. Foundation Central
  B. Foundation Applet
  C. Foundation VM
  D. Foundation as a Service
  C. Foundation VM

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  Explanation/Reference:

  When installing Nutanix AOS on Cisco UCS hardware platforms, the recommended method is to use the Foundation VM. This approach allows for the deployment of Nutanix software onto bare metal hardware from a virtual machine that can manage the installation process across multiple nodes simultaneously. The Foundation VM simplifies the installation and initial configuration process, ensuring that all nodes are correctly configured and integrated into the Nutanix ecosystem.References: Nutanix Bible, Nutanix University

• Question 3:

  During a pre-engagement call, a customer explains that network cables are missing from the boxes. The consultant examines the bill of materials more closely to verify the quantity and type required by the hardware. The rack is already equipped with one OOBM Ethernet switch and two 10GbE SFP+ ToR switches.

  

  Which cables should the consultant recommend to the customer for implementing in this scenario?

  A. Six Ethernet Cat7 cables
  B. Six DAC 10GbE cables and 3 Ethernet cables
  C. Six lOGbE cables
  D. Three DAC 10GbE cables and 3 Ethernet cables
  B. Six DAC 10GbE cables and 3 Ethernet cables

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  Explanation/Reference:

  Considering the equipment setup with one Out-of-Band Management (OOBM) Ethernet switch and two 10GbE SFP+ Top of Rack (ToR) switches, the consultant should recommend six DAC (Direct Attach Cable) 10GbE cables and three Ethernet cables. The DAC 10GbE cables are suitable for connecting the nodes to the ToR switches to handle high-speed data transfers, while the Ethernet cables are necessary for connections related to management purposes, such as connecting to the OOBM switch for remote management tasks. This recommendation ensures adequate connectivity for both data and management networks.References: Nutanix Hardware and Installation Guide, Best Practices for Network Cable Management.

• Question 4:

  An administrator needs to make sure an RF3 cluster can survive a failure of two complete racks without negatively affecting performance.

  The current cluster configuration consists of the following:

  1.

  30 All Flash Nodes: distributed 10 nodes per rack across three 42U racks

  2.

  Each node is configured with 20TB usable storage all flash (Cluster Total 600TB Usable)

  3.

  Current cluster utilization is 500TB storage

  4.

  Storage containers have Erasure Coding enabled

  Which configuration changes should be made to make sure the cluster meets the requirements?

  A. Expand the cluster to 50 nodes distributed evenly across 5 racks
  B. Expand the cluster to 48 nodes distributed evenly across 6 racks
  C. Expand the cluster to 60 nodes distributed evenly across 6 racks
  D. Expand the cluster to 40 nodes distributed evenly across 5 racks
  C. Expand the cluster to 60 nodes distributed evenly across 6 racks

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  Explanation/Reference:

  https://portal.nutanix.com/page/documents/details?targetId=Web-Console-Guide-Prism-v5_17:arc-configure-fault-tolerance-rack-prism-c.html

• Question 5:

  A consultant creates a new cluster using ESXi as the hypervisor. After creating the cluster, the consultant begins to run Life Cycle Manager (LCM) updates. During the LCM upgrade pre-checks, an error is returned.

  Which configuration is causing this issue?

  A. ESXi cluster admission control is disabled.
  B. ESXi cluster DRS is enabled.
  C. ESXi cluster HA is enabled.
  D. ESXi cluster admission control is enabled.
  D. ESXi cluster admission control is enabled.

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  Explanation/Reference:

  The error during LCM pre-checks in an ESXi-based Nutanix cluster with HA enabled is most likely due to the ESXi cluster admission control being enabled. Admission control is a feature in VMware ESXi that reserves resources for HA purposes to ensure that sufficient resources are available in the event of host failures. When admission control is enabled, it can interfere with Nutanix LCM operations, which may require resource reallocation or reconfiguration that conflicts with the reserved capacities set by admission control. Disabling admission control during LCM updates would typically resolve this issue.References: VMware documentation on HA and Admission Control, Nutanix LCM documentation.

• Question 6:

  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:

  1.

  Cluster memory utilization: 80%

  2.

  Cluster SSD utilization: 70%

  3.

  Average VM CPU Wait Time: 11%

  4.

  CVM CPU utilization: 75%

  Which action should be taken to improve VDI performance?

  A. Increase the amount of SSD storage in the cluster.
  B. Add memory to the nodes in the cluster.
  C. Add CPU resources to the cluster.
  D. Increase the number of vCPU cores allocated to the CVM.
  C. Add CPU resources to the cluster.

• Question 7:

  A consultant is unable to install virtualization software on a laptop.

  Which two versions of Foundation can be used to resolve this issue? (Choose two.)

  A. Foundation VM
  B. Foundation Portable
  C. Foundation Central
  D. Foundation Applet
  B. Foundation Portable
  D. Foundation Applet

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  Explanation/Reference:

  When a consultant is unable to install virtualization software on a laptop, the most suitable versions of Foundation to resolve this issue would be Foundation Portable (Option B) and Foundation Applet (Option D). Both these versions are designed to be used in environments where installing additional virtualization software might not be feasible. Foundation Portable can be run from a USB drive, and the Foundation Applet is a Java-based tool that can run directly on a host machine without the need for a full virtual machine environment.References: Nutanix Foundation Installation Guide, Nutanix Support Portal.

• Question 8:

  Microsegmentation was recently enabled in a Nutanix environment. The administrator wants to leverage Prism Central to create a policy that will block all traffic, regardless of direction, between two groups of VMs identified by their category. Which policy should be used to meet this requirement?

  A. A Quarantine Policy
  B. An Isolation Environment Policy
  C. An Application Security Policy
  D. A Whitehst-Based Policy
  B. An Isolation Environment Policy

• Question 9:

  For several days, an administrator notices the following alerts:

  1.

  CVM NIC Speed Low Warning Alerts

  2.

  Warning Alerts of CVM NIC not performing at optimal speed

  3.

  CVM is disconnected from the network Critical Alert

  4.

  Network Visualization page shows excessive dropped packets on CVM/Host

  Which steps should be taken to determine which problem should be addressed first?

  A. Access the Hardware Page to verify resources are available Analyze ail CVM Speed Alerts in the Alerts/Events page Analyze output for the network and interface properties and connectivity issues
  B. Verify Host/CVM connectivity on the Network Visualization page Use to verify the bridge and bond configuration Review alerts/events page for the CVM disconnected error
  C. Review Alerts page for NIC speed alerts and alert timing Analyze the genesis.out log file for process failures Assess the NIC properties in the Network Visualization>; Host Properties page
  D. Restart networking services on the CVM Determine the current configuration of the affected CVM via output Access the Alerts/Events page for the CVM network connection failures
  B. Verify Host/CVM connectivity on the Network Visualization page Use to verify the bridge and bond configuration Review alerts/events page for the CVM disconnected error

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  Explanation/Reference:

  Ref: https://portal.nutanix.com/page/documents/kbs/details?targetId=kA00e000000CuaDCAS

• Question 10:

  What is the default password shipped on new NX hardware from the factory for the ADMIN user on IPMI?

  A. node-serial-number
  B. nutanix/4u
  C. block-serial-number
  D. ADMIN
  A. node-serial-number

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  Explanation/Reference:

  Nutanix Security: As part of security improvements (complying with California statute SB-327), Nutanix changed the default IPMI password policy. Node-Specific Password: Each Nutanix NX hardware node now ships with a unique default

  IPMI password for the ADMIN user.expand_more This password is the node's serial number (using capital letters).expand_more Finding the Serial Number: You can locate the node's serial number either on a physical sticker or by running the

  ipmitool fru print command on the node.

  References:

  Nutanix Support Portal - Knowledge Base Article 1091: https://portal.nutanix.com/kb/1091