Nutanix NCS-CORE Online Practice Questions and Exam Preparation

Nutanix NCS-CORE Online Questions & Answers

• Question 11:

  A consultant wants to expand a Nutanix cluster based on Dell PowerEdge servers and notices the nodes have arrived software-less.

  Which two actions should the consultant take to expand the cluster? (Choose two.)

  A. Image nodes using Foundation VM/App.
  B. Use Expand cluster to expand duster.
  C. Return nodes to factory for imaging.
  D. Use Expand cluster to image the nodes.
  A. Image nodes using Foundation VM/App.
  B. Use Expand cluster to expand duster.

  ---

  Explanation/Reference:

  For expanding a Nutanix cluster with software-less Dell PowerEdge servers, the consultant should: A. Image nodes using Foundation VM/App. This tool is designed for initial imaging and configuration of Nutanix nodes, including software installation, which is necessary since the nodes arrived without any software. B. Use the Expand cluster functionality within the existing Nutanix environment once the nodes are imaged. This feature will integrate the newly imaged nodes into the existing cluster, enhancing the cluster's capacity and performance. Options C and D are not applicable as returning nodes to the factory for imaging is unnecessary with the availability of the Foundation tool, and "Expand cluster to image the nodes" is not a correct procedure as imaging must be completed before expansion.References: Nutanix Foundation Tool Documentation, Nutanix Cluster Expansion Guide.

• Question 12:

  A consultant is planning a new cluster installation and needs to locate the Shared IPMI port for each of the specific nodes that the customer has bought. Which Support Portal location contains the document that would identify the port?

  A. Solutions Documentation
  B. Hardware Replacement Documentation
  C. Software Documentation
  D. Knowledge Base
  B. Hardware Replacement Documentation

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  Explanation/Reference:

  When looking for documents that identify specific ports such as the Shared IPMI port on nodes, the best location within the Nutanix Support Portal is the Hardware Replacement Documentation. This section specifically deals with physical components and their configurations, making it the most appropriate resource for identifying physical port locations and specifications related to specific Nutanix hardware models.References: Nutanix Support Portal, Nutanix Bible, and NCS-Core 6.8 materials specifically mentioning hardware documentation.

• Question 13:

  Refer to Exhibit:

  NX-3460-G9

  

  A Foundation install must be done on four NX nodes for a new customer. A consultant need to set up the network onsite before imaging the nodes through the Foundation tool.

  The nodes are equipped with two SFP28 25GbE NICs with dual ports, and a 10GBase-T NIC with dual ports as well The customer's ToR switches are 25GbE datacenter switches, already in production.

  What is the appropriate hardware to perform the most reliable imaging of these NX nodes?

  A. A flat Ethernet switch, 4 compatible IGBase-T GBiCs, five Ethernet cables and a laptop.
  B. The 25GbE production switches. 4 DAC cables and 5 Ethernet cables with a flat Ethernet switch, and a laptop.
  C. A flat Ethernet switch. 9 Ethernet cables, and a laptop.
  D. The 25GbE production switches. 4 DAC cables, only one Ethernet cable with a 10GBase-T GBIC, and a laptop.
  B. The 25GbE production switches. 4 DAC cables and 5 Ethernet cables with a flat Ethernet switch, and a laptop.

  ---

  Explanation/Reference:

  Given that the customer's ToR switches are 25GbE and are already operational, the most reliable and straightforward method for imaging these NX nodes with dual 25GbE and 10GbE ports is to use the 25GbE production switches. The

  appropriate hardware setup includes:

  4 DAC (Direct Attach Cable) cables for connecting the 25GbE NICs on the nodes to the ToR switches.

  5 Ethernet cables to manage connectivity between nodes and potentially to a flat Ethernet switch and a laptop for Foundation process control. This setup ensures the fastest and most reliable network performance during imaging, leveraging

  the existing high-speed infrastructure.

  References : Nutanix Hardware and Installation Guide, Best Practices for Network Configuration during Foundation.

• Question 14:

  A consultant is onsite with a customer to expand an existing eight-node cluster with four new GPU nodes. The consultant plugs the nodes into the network switch and follows the procedure to expand the cluster in Prism Element, but the new nodes cannot be found.

  Which issue is preventing the new nodes from being discovered?

  A. IPMI is not plugged into the network.
  B. IPv6 is disabled on the ToR switch.
  C. Node discovery is disabled in the BIOS.
  D. Active Directory is not configured appropriately.
  A. IPMI is not plugged into the network.

  ---

  Explanation/Reference:

  If new GPU nodes cannot be found during an attempt to expand an existing cluster:

  IPMI is not plugged into the network: IPMI must be connected and functional for node discovery and management during expansion processes. If IPMI ports are not connected to the network, the nodes will not be discoverable in Prism

  Element.

  References:

  Nutanix Bible (https://www.nutanixbible.com), particularly the sections discussing network requirements for cluster expansion. Nutanix University: NCS-Core 6.8 Training (https://university.nutanix.com), focusing on troubleshooting and

  resolving issues during hardware expansions.

• Question 15:

  A consultant attempts to perform an LCM inventory after successfully creating the cluster, but is met with the following error:

  LCM Exception [LcmExceptionHandler]: Could not find a module for entity with reference name nutanix.ncc.update

  What is the most likely reason LCM inventory/update is failing?

  A. Nameservers are not reachable.
  B. IPMI network is unable to reach the internet.
  C. Clusters must be licensed before LCM inventory.
  D. Nutanix CVMs are blocking TCP port 54.
  C. Clusters must be licensed before LCM inventory.

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  Explanation/Reference:

  The error encountered during the LCM inventory process, which mentions "Could not find a module for entity with reference name nutanix.ncc.update," typically indicates that the cluster has not yet been licensed. The Life Cycle Management (LCM) functionality in Nutanix systems requires a valid license to perform operations such as inventory checks and updates. Without this license, LCM cannot retrieve or update the necessary software modules, leading to the stated error. Licensing the cluster would resolve this issue and allow the LCM processes to proceed normally.References: Nutanix LCM Documentation, Nutanix Licensing Guidelines.

• Question 16:

  A consultant successfully installs the Foundation VM on a laptop and needs to ensure the VM can communicate externally.

  Which two configuration changes should the consultant make next? (Choose two.)

  A. Ensure the vNIC is set to bridged adapter.
  B. Configure the static IP address through the desktop virtualization software.
  C. Open terminal and configure via ifconfig command.
  D. Run the set_foundation_ip_address application on the VM desktop.
  A. Ensure the vNIC is set to bridged adapter.
  D. Run the set_foundation_ip_address application on the VM desktop.

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  Explanation/Reference:

  To ensure that the Foundation VM can communicate externally, the virtual network interface card (vNIC) should be set to a bridged adapter. This setting allows the VM to appear as a unique entity on the network, receiving its own IP address accessible from outside the host machine. Additionally, running the 'set_foundation_ip_address' application on the VM desktop enables the consultant to configure a specific, reachable IP address for the Foundation VM, ensuring it can communicate effectively with external network resources and devices.

  References: Nutanix Bible: Networking Setup for Foundation Nutanix University: Foundation VM Configuration

• Question 17:

  An administrator needs to replace an aging SAN and move to a hyper-converged infrastructure. The existing environment consists of the following hosts that are connected to the SAN:

  1.

  5xAIX hosts

  2.

  3x Hyper-V hosts

  3.

  9xESXi hosts

  4.

  2x physical SQL Clusters (Windows Server 2012R2 hosts)

  After deploying a Nutanix AHV cluster, which two actions should the administrator take to meet the requirements? (Choose two.)

  A. Deploy Volumes to support the AIX and SQL workloads.
  B. Migrate the ESXI workloads to AHV using Move.
  C. Deploy Files to support the AIX hosts.
  D. Migrate the ESXi and Hyper-V workloads using Move.
  A. Deploy Volumes to support the AIX and SQL workloads.
  D. Migrate the ESXi and Hyper-V workloads using Move.

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  Explanation/Reference:

  Ref: https://portal.nutanix.com/#page/kbs/details?targetId=kA00e000000Cr7GCAS

• Question 18:

  A consultant creates a four-node AHV cluster with two 1GbE (eth0, etc1) and two 10GbE (eth2, eth3) NICs per node. The 1GbE NICs will not be placed into service, but the customer wants the network to be preconfigured for their eventual

  use.

  The consultant removes the 1GbE NIC from the default bond and creates a second bridge(br1), but is unable to add the 1GbE NIC using the below command:

  manage_ovs -bridge_name br1 -interfaces 1g -bond_name br1-up update_uplinks

  Which parameter is missing from this command?

  A. --bond_duplex full
  B. --require_link=false
  C. --interfaces eth0
  D. --bridge_duplex full
  C. --interfaces eth0

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  Explanation/Reference:

  The manage_ovs command requires specific interface names to be added or configured under a bridge or bond. In the provided scenario, the command failed because it generically referred to '1g' which is not a recognized interface or valid parameter syntax. For the command to work correctly, each individual interface name must be specified. In this case, the missing parameter was the specific interface name 'eth0' for one of the 1GbE NICs. The corrected command should explicitly include the NIC names, e.g., --interfaces eth0,eth1 . References: Nutanix Bible Nutanix University NCS-Core Materials

• Question 19:

  How should a consultant validate the installed version of an NVIDIA driver in a Nutanix VDI deployment?

  A. [root@ahvrpm qa I grep i nvidia
  B. nutanix@cvm~$ rpm -qa I grep -i nvidia
  C. adminGcvm^S rpm -qa I grep i nvidia
  D. [rootQesxi -)# rpm -qa I grep -i nvidia
  B. nutanix@cvm~$ rpm -qa I grep -i nvidia

  ---

  Explanation/Reference:

  To validate the installed version of an NVIDIA driver in a Nutanix environment with AHV or within the CVM, use the command:

  This command checks for all RPM packages related to NVIDIA installed on the Controller Virtual Machine, providing details about the driver version.

  References:

  Nutanix Bible (https://www.nutanixbible.com), especially sections on AHV and CVM maintenance commands.

  Nutanix University: NCS-Core 6.8 Training (https://university.nutanix.com), which covers command-line tools and driver management.

• Question 20:

  A customer wants to ensure that the Data Protection configuration using Protection Domains is fully functional.

  The consultant has configured a protection domain for newly-created VMs with static IP addresses on multiple VLANs. The network administrator confirmed that the correct subnets exist at both physical sites.

  After performing a failover operation, the virtual machines are turned back on but have no network access.

  Which statement describes this issue?

  A. Network mappings are not configured for the Remote Site.
  B. Nutanix Guest Tools (NGT) are mandatory to use Data Protection.
  C. VirtIO drivers need to be reinstalled after a failover.
  D. Remote Virtual IP addresses are missing for the Remote Site.
  A. Network mappings are not configured for the Remote Site.

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  Explanation/Reference:

  If after performing a failover operation the virtual machines have no network access despite the network administrator confirming the correct subnets at both sites, the likely issue is:

  Network mappings are not configured for the Remote Site: This configuration oversight means that although the VMs are online, they do not have appropriate network settings that correspond to the network environment at the failover site,

  resulting in connectivity issues.

  References:

  Nutanix Bible (https://www.nutanixbible.com), specifically the sections on disaster recovery and network configurations in failover scenarios.

  Nutanix University: NCS-Core 6.8 Training (https://university.nutanix.com), covering Data Protection and failover operations.