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Nutanix NCS-Core exam is a certification exam that is designed to test the proficiency of professionals in the field of core infrastructure services. NCS-Core exam is intended for those who work with Nutanix infrastructure and want to validate their knowledge and skills in this area. Nutanix Certified Services Core Infrastructure Professional certification is recognized globally and is highly valued by organizations that use Nutanix infrastructure.
NEW QUESTION # 172
A consultant installs a new AHV cluster and moves the cluster into the customer's environment. Alter the move, the consultants notice that traffic is not being balanced across the physical NICs. The ToR switches have been configured with LACP.
Within Prism Element, which AHV network option should be set to resolve the issue?
- A. Active-Active
- B. No Uplink Bond
- C. Active-Active with MAC Pinning
- D. Active-Backup
Answer: A
Explanation:
In a situation where traffic is not being balanced across the physical NICs and the Top-of-Rack (ToR) switches have been configured with LACP (Link Aggregation Control Protocol), the appropriate AHV network configuration to resolve this issue within Prism Element is "Active-Active." This setting enables both NICs to actively handle traffic, which, combined with LACP, allows for load balancing and redundancy, effectively utilizing all available network paths. This setup ensures that traffic is spread evenly across the physical NICs, maximizing network throughput and resilience.
References:
* Nutanix Prism User Guide
* Nutanix AHV Administration Guide
In a scenario where a new AHV cluster is installed and the traffic is not being balanced across the physical NICs despite the ToR switches being configured with LACP, the appropriate network option to set within Prism Element is Active-Active. This configuration allows for a traffic-hashing algorithm, such as balance-TCP, to split traffic between multiple links in an active-active fashion. Since the uplinks appear as a single L2 link, the algorithm can balance the traffic among bond members without any regard for switch MAC address tables1.
References:
* Nutanix Community: AHV Networking | Enable, Disable and Verify LACP1
* Nutanix Support & Insights: Layer 2 Network Management2
* Nutanix Support & Insights: Enabling LAG and LACP on the ToR Switch (AHV Only)
NEW QUESTION # 173
What should a consultant consider when completing a bare-metal imaging process?
- A. Enable STP by using PortFast or an equivalent feature on the ports that are connected to the Nutanix host.
- B. Ensure that the CD ROM appears last in the BIOS boot order to avoid Foundation timeout.
- C. Connect to a managed switch with routing tables to protect the production environment against configuration errors.
- D. Avoid connecting any device to the node USB port that presents virtual media such as a CD-ROM.
Answer: D
Explanation:
When completing a bare-metal imaging process, it is crucial to avoid connecting any device to the node's USB port that presents virtual media such as a CD-ROM. This is important because such devices can interfere with the imaging process, potentially leading to errors or misconfigurations by presenting alternative boot options or media.
References:
* Nutanix Bible (https://www.nutanixbible.com), where hardware setup and imaging process precautions are discussed.
* Nutanix University: NCS-Core 6.8 Training (https://university.nutanix.com), which covers the best practices for physical setup and foundation imaging.
NEW QUESTION # 174
The customer notices storage latency issues with their new Nutanix AHW cluster. The deployment includes the following components:
2 ToR switches
7 nodes
Which command should the consultant run to identify issues?
- A. manage_ovs show bridges
- B. manage_ovs show_11dp
- C. manage_ovs show_uplinks
- D. manage_ovs show_interfaces
Answer: D
Explanation:
To troubleshoot storage latency issues in a Nutanix cluster, it is vital to examine the state and performance of the network interfaces. The command manage_ovs show_interfaces provides comprehensive details about each interface's status, including any errors or drops that could contribute to network-related latency. This information is crucial for identifying problematic nodes or interfaces that may be causing storage access delays. This command effectively presents the operational status of network interfaces, which can help pinpoint issues directly affecting storage performance.
References:
* Nutanix Command Reference Guide: https://portal.nutanix.com
* Nutanix University Troubleshooting Network Issues:
https://www.nutanix.com/support-services/training-certification
NEW QUESTION # 175
An administrator is deploying a three-tier application on a Nutanix Enterprise Cloud consisting of web, application, and database VMs. Traffic between the servers must be limited to specific services/ports. There is an application layer firewall VM deployed on one host in the cluster.
In which way should the administrator meet this requirement?
- A. Categorize the VMs in Prism Central and utilize Flow to set a security policy
- B. Create a network for each type of VM, and use policy-based routing to control the traffic flow
- C. Separate the web. application and database VMs on to dedicated VLANs
- D. Configure a security policy and service chain redirecting the server traffic through the firewall
Answer: A
Explanation:
For a multi-tier application where traffic must be limited to specific services and ports across web, application, and database VMs, the optimal approach is to use microsegmentation features provided by Nutanix. Option D,
"Categorize the VMs in Prism Central and utilize Flow to set a security policy," is the correct choice.
Nutanix Flow allows for detailed security policies that control VM-to-VM traffic within the same cluster, effectively managing access and communication based on specified criteria like VM category, service, or application type. This solution enables precise control over traffic flows, enhancing security without requiring additional physical or virtual network segmentation.
References:Nutanix Flow capabilities are detailed in Nutanix Prism Central's documentation, which explains how to implement microsegmentation and security policies for application-specific traffic management.
NEW QUESTION # 176
An administrator receives a notification that storage in a Nutanix cluster is unavailable. The cluster consists of five nodes and is configured with a Fault-Tolerance level of 1 (FT-1).
Upon investigation, the administrator finds the following:
* All AHV hosts are powered on and the CVMs are running
* Nodes A, B, and C are connected to one top of rack switch
* Nodes D and E are connected to a second top of rack switch
* The cluster status command run on Node A shows that CVM services on nodes D and E are down Which issue is causing the storage outage?
- A. The default gateway for the CVMs and AHV hosts is down.
- B. The switch connecting Nodes D and E is down.
- C. Nodes D and E are inmaintenance mode.
- D. The genesis process is down on both Nodes D and E.
Answer: B
Explanation:
https://hyperhci.com/2020/07/29/nutanix-cluster-services-down-troubleshooting/
NEW QUESTION # 177
An administrator is trying to correct high cluster IOPs and Cluster Controller Latency. Networking is the suspected issue.
Which networking parameters should be configured in the Nutanix cluster?
- A. Number of NICs connected and network latency.
- B. Number of NICs connected and bond state.
- C. Bond State and network latency
- D. Number of NICs connected and frame size
Answer: D
NEW QUESTION # 178
A consultant notes that a customer environment requires Nutanix storage containers to be mounted on non-Nutanix hosts for manual data migration workflows.
What configuration should the consultant validate to ensure setup was performed properly?
- A. Prism Element * Settings - Filesystem Whitelist
- B. Prism Central - Settings - Filesystem Whitelist
- C. Prism Central - Settings - Cluster Details
- D. Prism Element - Settings - Cluster Details
Answer: A
Explanation:
For ensuring that Nutanix storage containers can be mounted on non-Nutanix hosts for data migration workflows, the consultant should validate the configuration under: A. Prism Element - Settings - Filesystem Whitelist. This setting allows specific non-Nutanix hosts to access the Nutanix storage containers, which is essential for environments where data must be accessible to systems outside the Nutanix cluster. By whitelisting the IP addresses or hostnames of these external systems, they are granted the necessary permissions to mount and interact with the Nutanix file systems.References: Nutanix Prism Element User Guide, Nutanix Storage and Filesystem Configuration Best Practices.
NEW QUESTION # 179
Refer to the exhibit.
An administrator creates a security policy that isolates their financial application from accessing the Internet When viewing the policy in Prism Central, several connections from the application are outbound to the Internet.
What is causing this issue with the policy?
- A. The policy has been left in monitor mode instead of enforcing mode.
- B. The blockedconnections are illustrated for information only.
- C. The 0.0.0.0 address was not specified in the outbound rule.
- D. The Activate box was not checked in the rule, so it is not enforcing.
Answer: A
Explanation:
Explanation
https://portal.nutanix.com/page/documents/details?targetId=Prism-Central-Guide-Prism-v510:mul-security-polic
NEW QUESTION # 180
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. Questionnaire
- B. Project Plan
- C. Technical Checklist
- D. Operations Guide
Answer: C
Explanation:
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.
NEW QUESTION # 181
A consultant runs the Foundation Applet and discovers all the nodes. The consultant wants to use the latest version of Foundation for imaging for support purposes and to cover the latest hardware and software hypervisor support.
What should the consultant do to upgrade Foundation on a node?
- A. Use crash cart and manually upgrade Foundation files on one node.
- B. Use the Foundation VM to upgrade Foundation on all nodes.
- C. Use latest version of Foundation to reimage all the nodes.
- D. Use the Foundation Applet to upgrade Foundation on a single node.
Answer: B
Explanation:
To ensure that the Foundation Applet is up-to-date across all nodes, the best approach is to use the Foundation VM. The Foundation VM allows consultants to manage and upgrade Foundation on all nodes centrally. This method avoids the necessity of manual upgrades on each node individually, thus ensuring a more efficient and error-free process, aligning with Nutanix's best practices for scalability and management of infrastructure.References: The Nutanix Bible, the Nutanix University's NCS-Core 6.8 materials, and official Nutanix documentation on the Foundation VM.
To ensure the latest version of Foundation is used for imaging to support the latest hardware and software hypervisor configurations, the consultant should utilize the Foundation VM. This tool allows for upgrading the Foundation on all nodes simultaneously, ensuring consistency across the cluster. It streamlines the process by leveraging the existing Foundation infrastructure rather than requiring manual updates via a crash cart or the limited capabilities of the Foundation Applet for single node upgrades.
References:
* Nutanix Foundation Documentation: https://portal.nutanix.com
* Nutanix Upgrade Guide: Nutanix Foundation Upgrade Process
NEW QUESTION # 182
In a 20-node ESXi deployment, the customer needs additional resiliency to survive the loss of two nodes concurrently.
Which configuration should the consultant use to ensure that the appropriate resources are available?
- A. Storage reservation for 5%; HA admission control for 5%, cluster RF2
- B. Storage reservation for 10%; HA admission control for 10%, cluster RF3
- C. Storage reservation for 5%; HA admission control for 5%, cluster RF3
- D. Storage reservation for 10%; HA admission control for 10%, cluster RF2
Answer: C
Explanation:
To ensure additional resiliency in a 20-node ESXi deployment capable of surviving the concurrent loss of two nodes, the consultant should configure the system with a storage reservation and HA (High Availability) admission control each set to 5%, combined with a cluster redundancy factor (RF) of 3. RF3 provides the capability to tolerate the failure of up to two nodes without data loss, thus enhancing the cluster's resilience.
This configuration is optimal for maintaining cluster availability and integrity during multiple node failures.References: Nutanix Bible, Nutanix University
NEW QUESTION # 183
A consultant is preparing to add new nodes into an existing cluster. The current cluster AOS version is 5.8.
The new expansion node is currently running AOS 5.9 code. The cluster must continue to run at its current AOS version.
Which method can be used to successfully add the node?
- A. Use Prism Element, which will downgrade the node by default during the node add process.
- B. Upgrade the cluster to 5.9 and add the node through Prism Element.
- C. Use the CLI and enter cluster add-node node-serial="node_serial".
- D. Use Prism Element to Expand the cluster and select the re-image option.
Answer: D
Explanation:
When adding a new node with a higher AOS version (5.9) into an existing cluster running an older version (5.8), the recommended method is to use Prism Element to expand the cluster and select the re-image option.
This process involves re-imaging the new node to the AOS version currently running in the cluster (5.8), ensuring compatibility and stability across the cluster without requiring an overall upgrade to a newer version.
This approach maintains the cluster's operational integrity while integrating the new hardware.References:
Nutanix Bible, NCS-Core 6.8 official training materials, and Nutanix support documentation on cluster expansion.
NEW QUESTION # 184
An administrator deletes a large amount of data from a Volume Group presented to a Linux VM. The administrator notices that the deleted data has not been reclaimed as usable storage.
Whataction should be taken to reclaim the storage capacity?
- A. Shrink the Volume Group that is associated with the Linux VM
- B. Enable the unman operation on the Linux VM
- C. Run Defrag on the Linux VM
- D. Unmount the Volume Group and then Remount the Volume Group
Answer: D
Explanation:
Explanation
https://next.nutanix.com/how-it-works-22/vm-capacity-and-prism-capacity-are-different-33134
NEW QUESTION # 185
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
Answer: A
NEW QUESTION # 186
In which two ways can the IPMI address be set on a Nutanix hardware installation? (Choose two.)
- A. ipmitool
- B. Nutanix Network Crashcart
- C. BIOS configuration
- D. iLO configuration utility
Answer: A,C
Explanation:
The IPMI address on a Nutanix hardware installation can be set in two ways:
* BIOS configuration: Access the BIOS settings during boot-up to manually configure the IPMI address directly on the hardware.
* ipmitool: Use the ipmitool command-line utility to configure the IPMI address from a remote session or script, which provides a way to automate or manage IP settings without needing physical access to the BIOS.
References:
* Nutanix Bible (https://www.nutanixbible.com), particularly the sections on hardware installation and IPMI settings.
* Nutanix University: NCS-Core 6.8 Training (https://university.nutanix.com), detailing tools and techniques for IPMI configuration.
NEW QUESTION # 187
A consultant is installing Nutanix AOS on Cisco UCS.
Which method should be used to install AOS on UCS hardware platforms?
- A. Foundation VM
- B. Foundation as a Service
- C. Foundation Applet
- D. Foundation Central
Answer: A
NEW QUESTION # 188
A consultant deploys a four-node VMware ESXi cluster and vCenter server. An HA/DRS cluster is configured for all four nodes. The customer deploys five new VMs on the cluster.
During the knowledge Transfer, a network cable on one node is removed to demonstrate HA and migration of the VMs to another host. In the HA/DRS cluster settings, the VM Restart Priority for all CVMs is set to Disabled. The customer observes warnings that the CVM on the ejected host is no longer powered on.
Which ESXi HA/DRS cluster setting is missing?
- A. Enable EVC for the cluster.
- B. Disable VM Monitoring on all CVMs.
- C. Enable Host Monitoring.
- D. Disable Automation Level on all CVMs.
Answer: C
Explanation:
The issue indicated is that the VMs, specifically the CVMs (Controller VMs), do not restart on the remaining nodes after a network cable is removed, demonstrating a failure of HA (High Availability). The setting that should be verified is "Host Monitoring" within the ESXi HA/DRS settings. This setting enables the host to monitor the state of other hosts in the cluster and take necessary actions like VM restarts on other hosts in the event of failures. If it's disabled, the cluster wouldn't automatically manage the failover of VMs upon host disconnection. References: Nutanix Bible (https://www.nutanixbible.com/), Nutanix Official YouTube Training Series
NEW QUESTION # 189
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?
- A. Span the 2TB disk across four vDisks
- B. Increase the vCPUs assigned to the VM
- C. Add 4GB of memory to the VM
- D. Increase the number of cores per vCPU
Answer: A
NEW QUESTION # 190
What is the minimum number of nodes required for a Nutanix Cluster to support Replication Factor 3 (RF3) on a storage container?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: B
NEW QUESTION # 191
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The NCS-Core certification exam is intended for IT professionals who are responsible for designing, implementing and maintaining Nutanix solutions. NCS-Core exam covers the essential concepts of Nutanix's core infrastructure services, including storage, networking and virtualization. Candidates who pass NCS-Core exam will have the skills and knowledge required to implement and manage Nutanix solutions in enterprise environments.
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