Nutanix NCS-CORE Online Practice Questions and Exam Preparation

Nutanix NCS-CORE Online Questions & Answers

• Question 231:

  A three-node cluster has a Nutanix Files instance with three FSVMs. What happens after a node failure?

  A. The affected FSVM will get live-migrated to another node.
  B. The affected FSVM will not be restarted on another node due to its agent VM setting.
  C. The affected FSVM will not be restarted on another node due to its VM-to-VM anti-affinity settings.
  D. The affected FSVM will be restarted on another node.
  D. The affected FSVM will be restarted on another node.

  ---

  Explanation/Reference:

  Ref: https://portal.nutanix.com/page/documents/details?targetId=Files-v3_6:fil-files-high-availability-c.html

• Question 232:

  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 233:

  A consultant is unable to ping the CVM from the hypervisor using the external interface. The customer's network is configured with the 10.3.12.0/24 subnet without VLAN tagging. The CVM and hypervisor are using the same address space.

  What is causing this issue?

  A. The 1GbE and 10GbE NICs have not been separated.
  B. The default gateway is incorrect.
  C. The switch is trunked without a native VLAN.
  D. The CVM/hypervisor only communicates over 192.168.5.0/24.
  B. The default gateway is incorrect.

  ---

  Explanation/Reference:

  If a consultant is unable to ping the CVM from the hypervisor using the external interface in a network without VLAN tagging, and both are using the same subnet, the issue might be related to an incorrect default gateway configuration. The

  default gateway must be correctly set to ensure proper routing of packets between the CVM and the hypervisor. An incorrect gateway can prevent successful communication even if both devices are on the same subnet.

  References:

  Nutanix University - NCS-Core 6.8 Learning Path

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

• Question 234:

  A consultant creates an AHV cluster and connects the Intel X550T NICs to the top of rack switch using Twinax cables. The activity and link lights are green. The cluster cannot communicate over the 10GbE link.

  What is the first command the consultant should perform to troubleshoot the issue?

  A. manage_ovs show_bridges
  B. manage_ovs show_interfaces
  C. manage_ovs update_uplinks
  D. manage_ovs show_uplinks
  B. manage_ovs show_interfaces

  ---

  Explanation/Reference:

  When facing issues with network communication over 10GbE links, the first command to troubleshoot is manage_ovs show_interfaces . This command allows the consultant to review the operational status and settings of each network interface, including those connected via Twinax cables to the top of rack switch. This will show whether the interfaces are correctly configured and functioning, which is essential for establishing a successful network link.

  References: Nutanix Command Reference Guide: https://portal.nutanix.com Nutanix Community Network Troubleshooting Tips: Nutanix Community

• Question 235:

  A consultant is planning an installation and needs to collect configuration items to be used during the install. The data needed from the customer are IP addresses, Gateway, DNS servers, and NTP Servers.

  Which Cluster Deployment document must be completed with the customer?

  A. Project Plan
  B. Operations Guide
  C. Questionnaire
  D. Technical Checklist
  D. Technical Checklist

  ---

  Explanation/Reference:

  The document that needs to be completed with the customer to collect configuration items such as IP addresses, Gateway, DNS servers, and NTP Servers is the Technical Checklist. This checklist is designed to ensure all necessary technical information is gathered prior to the installation, enabling a smooth and efficient setup process.References: Nutanix Cluster Deployment Guide, Pre-installation Planning Documentation.

• Question 236:

  Refer to the exhibit.

  

  On a four-node NX-3460 cluster, two 10G NiCs are connected to redundant Cisco ToR 5K switches as shown in the first exhibit Port On a four-node NX-3460 cluster, two 10G NICs are connected to redundant Cisco TOR Sk switches as

  shown in the fist exthibt. Port failover must be tested.

  The network configuration output from the CVM is shown in the second exhibit. To test fallover, a shut command is executed on the switchport that connects the node to the 5k1 switch.

  Refer to the exhibit.

  

  A. Active link is disconnected. Passive link takes over.
  B. Passive link is disconnected. Active link takes over.
  C. Active link takes over. HA Failover takes place.
  D. Passive link takes over. HA Failover takes place.
  A. Active link is disconnected. Passive link takes over.

  ---

  Explanation/Reference:

  In the scenario described, the configuration shown in the exhibit indicates that there is an "active-backup" bond mode. If a shut command is executed on the switchport that connects the node to the 5k1 switch (assuming it's the active link), the passive link should take over. This response ensures no loss of connectivity as the passive link becomes active in the absence of the primary (active) link.References: Nutanix Bible, Nutanix University NCS-Core 6.8 learning materials

• Question 237:

  An administrator is deploying several new application VMs to a Nutanix cluster. The application is very transactional with a 28/72 random, read/write ratio.

  What should the administrator do?

  A. Add a minimum of four SSDs to each node to ensure all writes go to the SSDs.
  B. Add a minimum of four virtual disks to each VM, and aggregate them on guest OS level.
  C. Add one large SSD to each node and enable Flash Mode for the VMs.
  D. Add one large virtual disk to each VM. and use it for all application data.
  B. Add a minimum of four virtual disks to each VM, and aggregate them on guest OS level.

  ---

  Explanation/Reference:

  Ref: https://next.nutanix.com/server-virtualization-27/iops-latency-issue-1168

• Question 238:

  During a Site Readiness Check, a customer informed the consultant that there is no NTP server currently configured in the environment.

  Which two statements should the consultant consider for continuing the cluster deployment? (Choose two.)

  A. An NTP server is not required for cluster Foundation and can be added later.
  B. If an NTP server is provided using FQDN, a DNS server is required.
  C. At least 3 NTP servers must be provided in a comma-separated list.
  D. At least one external NTP server must be used to complete Foundation process.
  A. An NTP server is not required for cluster Foundation and can be added later.
  B. If an NTP server is provided using FQDN, a DNS server is required.
  C. At least 3 NTP servers must be provided in a comma-separated list.
  D. At least one external NTP server must be used to complete Foundation process.

  ---

  References:Nutanix Installation and Configuration Guide, Nutanix Foundation Tool documentation.

• Question 239:

  Refer to the exhibit.

  

  An administrator logged into Prism Element, notices the following in the home dashboard, and showing the exhibit.

  Which action should the administrator take next?

  A. Configure the fqdn for the hosts indicated
  B. Troubleshoot the zookeeper server issue
  C. Re-run NCC specifying data_resiliency_check
  D. Check the hardware page for disk failures
  A. Configure the fqdn for the hosts indicated

  ---

  Explanation/Reference:

  The exhibit shows a screenshot of a Prism Element home dashboard with a notification that "Data Resiliency not possible" and warnings about the inability to get configured fully qualified domain names (fqdn) for hosts identified by their node

  numbers.

  In this scenario, the administrator should take action A: Configure the fqdn for the hosts indicated. This is because the warnings on hostname resolution indicate issues with fully qualified domain names (fqdn) configuration for specific nodes.

  Configuring the fqdn for these hosts can help resolve these issues and improve the data resiliency of the Nutanix cluster1.

  References:

  Nutanix Prism Guide

  Nutanix Community

  Nutanix Documentation

• Question 240:

  A CEO asks the IT administrator to provide a list of required resources to protect current workloads and the two new SQL servers from a disaster. The Nutanix environment is managed by Prism Central.

  Which option explains how to meet the CEO's request?

  A. In Capacity Runway, select Optimize Resources and select all VMs that must be protected.
  B. Create a new project and assign the VMs to it to get compute and storage requirements.
  C. Create a new scenario based on a new cluster based on a VM Profile and select Recommend.
  D. Create a new Recovery policy by selecting the VM that needs to be protected and get hardware requirements.
  D. Create a new Recovery policy by selecting the VM that needs to be protected and get hardware requirements.

  ---

  Explanation/Reference:

  In a Nutanix environment managed by Prism Central, protecting workloads and SQL servers from a disaster involves creating a recovery policy. A recovery policy in Nutanix is a set of rules that define how data is protected and recovered in

  the event of a disaster.

  Creating a new recovery policy involves selecting the virtual machines (VMs) that need to be protected and specifying the hardware requirements for the recovery environment. This includes the compute and storage resources needed to run

  the protected VMs in the recovery site.

  Once the recovery policy is created, Nutanix's built-in data protection and disaster recovery capabilities can ensure that the protected VMs can be quickly and efficiently recovered in the event of a disaster. This includes capabilities such as

  efficient snapshot, cloning, and replication capabilities to provide a higher level of protection at a lower cost.

  Therefore, to meet the CEO's request, the IT administrator should create a new Recovery policy by selecting the VM that needs to be protected and get hardware requirements.

  References:

  Designing, Optimizing and Scaling Microsoft SQL Server - Nutanix

  Nutanix Data Disaster Recovery - Protect Apps and Data | Nutanix

  Recommendations For Leap And Supported Service-level ... - Nutanix

  Cloud Disaster Recovery Services | Nutanix

  Nutanix High Availability and Data Protection