NCA-6.10 Nutanix Certified Associate NCA v6.10 Questions and Answers

Nutanix Distributed Storage Fabric (DSF) provides storage access to an ESXi hypervisor using the NFS (Network File System) protocol. DSF abstracts the underlying storage hardware and exposes storage as an NFS datastore to ESXi hosts. This integration enables high performance, data protection, and scalability while simplifying storage management.

Other options:

LVM : Not used in Nutanix storage.

iSCSI : Used for specific use cases, not the default protocol for ESXi.

SMB : Not supported for ESXi environments.

To verify if the cluster is currently protected from potential data loss due to a component failure, the administrator should check the Data Resiliency Status widget on the Prism Element Home dashboard. This widget provides real-time information about the cluster's resiliency status, including warnings or errors about data redundancy or protection.

Other options:

A. Select the gear icon and then select Pulse: Pulse is used for telemetry data, not data resiliency status.

B. Click on Home and then Alerts: Alerts show specific issues but do not directly indicate the overall resiliency status.

D. Navigate to the Health dashboard: The Health dashboard provides detailed health checks but does not display the current resiliency status.

When configuring a physical network switch in Prism Element, SNMP Configuration is required to enable monitoring and communication between the Nutanix cluster and the network switch. SNMP (Simple Network Management Protocol) is used to gather metrics and detect issues such as link failures or performance bottlenecks, ensuring the cluster operates efficiently with the physical network infrastructure.

To enable Windows Defender Credential Guard, the VM must be configured with UEFI (Unified Extensible Firmware Interface) instead of Legacy BIOS. UEFI provides the necessary support for Secure Boot and Virtualization-Based Security (VBS), both of which are prerequisites for Credential Guard.

Steps:

When creating or editing the VM, select UEFI as the firmware type.

Ensure Secure Boot and VBS are enabled in the OS configuration.

Log files requested by Nutanix Support can be collected from the Settings dashboard in Prism Element. Within Settings, administrators can access the "Export Logs" or "Support" section to collect and upload diagnostic data directly to Nutanix Support.

A. Settings: Correct, as logs are collected and uploaded via the Settings dashboard.

B. Alerts: Incorrect, as Alerts display system issues but do not provide log collection options.

C. Health: Incorrect, as the Health dashboard focuses on system checks and cluster status.

D. Analysis: Incorrect, as the Analysis dashboard provides performance monitoring, not log collection.

The correct answer is B. UTC.

When creating Linux VMs in a Nutanix environment (or in any enterprise-grade production environment), it is best practice to use UTC (Coordinated Universal Time) as the system timezone. This ensures:

Consistency across distributed systems

Accurate log correlation

Avoidance of issues with daylight saving time (DST)

Simplified centralized monitoring and troubleshooting

Clarifications:

A (Eastern) and D (Central) are region-specific and may introduce time skew across systems.

C (Local) is ambiguous and depends on the underlying hardware or hypervisor setting, which can lead to inconsistent behavior.

Official Reference:

Linux Admin Best Practices

Nutanix Best Practices Guide – VM Provisioning Section

Excerpt: “For consistency across environments, it is recommended to configure all Linux virtual machines to use UTC timezone, particularly in clustered and distributed applications.”

Nutanix licensing is available in three tiers:

Starter : Entry-level features for basic virtualization and storage requirements.

Pro : Advanced features such as data protection and disaster recovery.

Ultimate : Comprehensive feature set, including advanced analytics and automation.

This tiered approach enables administrators to choose the appropriate license level based on their business requirements.

In Nutanix Prism Element, the red heart icon at the top-right of the UI indicates that there is a critical alert affecting the cluster's health. This icon is part of the Alert Monitoring System , and clicking on it redirects the user to the Alerts dashboard , where all current active alerts—including their severity, source, and recommended remediation steps—are listed.

What to do:

Navigate to the Alerts section.

Review all critical alerts for further diagnosis.

Cross-reference with the Health dashboard if deeper system component checks are needed.

Clarification of Other Options:

A. Health: Summarizes system component states but does not provide detailed alert causes.

B. Tasks: Tracks user-initiated jobs, unrelated to fault diagnosis.

D. Analysis: Used for performance metrics and trends, not fault alerts.

Prism UI Navigation Path:

Click the red heart icon → Alerts Dashboard

Official Reference:

Nutanix Administration Guide – Alerts and Monitoring

Excerpt: “A red heart icon in Prism indicates a critical alert. Use the Alerts dashboard to identify and resolve the issue.”

The correct answer is B. 1

Nutanix Prism Central provides the ability to create and manage support cases directly from the UI , but this functionality requires at least one cluster to be registered to Prism Central. The Support option becomes active once one or more clusters are managed.

Important distinctions:

Zero clusters (Option A): With no clusters registered, Prism Central is effectively disconnected from any environment and thus cannot associate logs or telemetry with a support case.

One cluster (Option B): Enables access to support features, including log bundle generation and direct case submission.

Options C and D (2 or 3 clusters) are incorrect; they are not a requirement for enabling support case functionality.

Prism Central UI Navigation Path:

Settings (gear icon) > Support > Create Support Case

Official Reference:

Nutanix Prism Central Guide – Support Integration Section

Excerpt: "To open a support case through Prism Central, ensure at least one cluster is registered. Support features become available once a cluster is connected."

Conclusion: Only one cluster is required to activate the support case workflow in Prism Central.

Answer: B

To allow Nutanix Support to gather logs automatically without requiring manual intervention, the administrator should enable Pulse . Pulse is a telemetry service that collects and sends system health, log, and usage data to Nutanix Support securely.

Steps:

Navigate to Prism Central > Settings > Pulse .

Enable the service and configure as required for your environment.

Other options:

Self-Service : Refers to role-based access for users, unrelated to log collection.

Proxy Server : Used for network communication, not log gathering.

NKP : Refers to Nutanix Cluster Protocol, unrelated to telemetry.

Applying tags to licenses to streamline future renewals is a task that can be completed in Prism Central Licensing . Prism Central provides centralized license management for clusters, enabling administrators to apply and manage license tags, which simplifies tracking and renewal tasks across multiple clusters. Here's how it works:

Prism Central Licensing Overview : Prism Central includes a dedicated licensing interface that provides a consolidated view of all licenses associated with your clusters. From this interface, administrators can categorize licenses using tags such as "Renewal-2025" or "Production," making it easier to identify and manage renewals or assignments.

Steps to Apply Tags in Prism Central :

Navigate to Prism Central > Settings > Licensing .

Select the desired license(s) from the list.

Use the "Tags" option to create or apply predefined tags to categorize these licenses.

Why Not Other Options? :

A. Clusters in the Support Portal : The Support Portal is primarily used for support-related tasks, such as managing cases or accessing documentation, and does not include license tagging capabilities.

B. License Inventory in the Support Portal : While the Support Portal allows you to view license inventory, it does not support operational tasks like tagging.

D. Prism Element Licensing : Prism Element is focused on managing licensing for individual clusters and lacks the centralized management and tagging functionality available in Prism Central.

The correct answer is D. Select Escalate within the existing ticket.

When working with Nutanix Support, the most effective and structured way to request a callback or faster response is to use the "Escalate" function available in the Support Portal for the specific support case. This formally flags the case for priority handling , prompting action such as:

A direct call back from support.

Assignment of a higher-tier engineer.

Accelerated SLA response.

Clarifications:

A. Emailing the technician may go unnoticed or be delayed.

B. Opening a new ticket introduces duplication and delays.

C. Replying within the case does not prompt immediate re-evaluation unless escalation is used.

Official Reference:

My Nutanix Support Portal Guide – Case Management

Excerpt: “Use the ‘Escalate’ option within an open case to notify Nutanix Support that a higher level of engagement is required.”

The correct answer is B. Group of physical disks.

In Nutanix architecture:

A Storage Pool is the aggregation of physical storage devices (SSD, HDD) across all nodes in a cluster.

Each storage pool backs one or more Storage Containers , which are logical partitions used for data placement.

Storage pools cannot span clusters and are always confined to the cluster in which they are defined.

Clarifications:

A (Storage Containers) : These are logical groupings within storage pools.

C (Boot Drives) : These are not part of the pool.

D (vDisks) : These exist within VMs and are backed by containers, not pools directly.

Prism UI Navigation Path:

Storage > Storage Pools

Official Reference:

Nutanix Bible – Storage Pool Definition

Nutanix Storage Admin Guide

Excerpt: “A storage pool is made up of physical disks from one or more nodes and serves as the physical storage foundation for containers.”

Answer: B

To prevent password access to the CVM for both the nutanix and admin user accounts, Cluster Lockdown should be enabled. Cluster Lockdown restricts SSH access to the Controller VM (CVM), effectively disabling password-based logins for enhanced security. Access is then managed through more secure means, such as console access or specific tools like Nutanix Support.

A. Cluster Lockdown: Correct, as this prevents SSH-based access to the CVM.

B. STIG: Incorrect, as STIG (Security Technical Implementation Guide) focuses on broader compliance measures.

C. RBAC Policy on PC: Incorrect, as RBAC (Role-Based Access Control) controls Prism Central permissions, not CVM access.

D. Data-at-Rest Encryption: Incorrect, as this secures stored data, not access credentials.

When configuring dual encryption in Nutanix, an External Key Manager (EKM) is required. This allows the cluster to use an external hardware-based or software-based key management system to securely store and manage encryption keys. The combination of external and native encryption ensures compliance with high security standards.

A. Trusted Platform Module: Incorrect, as TPM is not used for managing dual encryption keys.

B. External Key Manager: Correct, as dual encryption relies on an external system to manage keys.

C. Native Key Manager: Incorrect, as native key management alone does not support dual encryption.

D. Lockdown Mode Enabled: Incorrect, as Lockdown Mode relates to cluster security, not encryption key management.

The Reserved Capacity option in a storage container explicitly reserves a portion of cluster storage for that container. This reservation reduces the amount of storage available for other containers. Reserved Capacity ensures that specific workloads have guaranteed storage resources, preventing resource contention or overcommitment.

Other options:

Advertised Capacity : Defines the storage limit displayed to users but does not reserve storage.

Erasure Coding : Optimizes storage efficiency but does not reduce available capacity.

Capacity Deduplication : Reduces space consumption by eliminating duplicate data but does not affect other containers' storage.

The correct answer is B. Internal NTP sources.

Nutanix strongly recommends configuring reliable internal NTP sources (e.g., enterprise-managed NTP servers or domain NTP servers) to ensure:

Time consistency across all nodes and CVMs

Accurate logging, monitoring, authentication (e.g., Kerberos), and cluster operations

Avoiding dependency on external/public NTP sources, which may be rate-limited, unavailable, or blocked by firewalls

Clarifications:

A (Windows time sources): Generally discouraged unless they are configured to use a stratum 1/2 reliable upstream source.

C (Rate-limited sources): Not recommended; can result in dropped or inconsistent time updates.

D (External ISP NTP): Not preferred for production clusters due to reliability concerns.

Prism UI Navigation Path:

Settings > NTP Servers

Official Reference:

Nutanix Best Practices Guide – NTP Configuration

Excerpt: “Use reliable and consistent internal NTP servers for all Nutanix clusters to maintain time synchronization.”

Answer: B

The default admin session logout time in Nutanix is 15 minutes . If no activity is detected within this time, the session is automatically logged out for security reasons. This timeout can be adjusted in the system settings if needed, depending on organizational requirements.

Non-migratable VMs in a Nutanix cluster typically include those with attached Volume Groups. This is because such VMs leverage direct-attached storage via iSCSI, which ties them to a specific host, preventing live migration to another host. Volume Groups provide block storage to applications, and the iSCSI protocol does not support live migration of such connections.

Here's a breakdown of the options:

A. VMs without NGT: Nutanix Guest Tools (NGT) are used for guest-level integration but do not affect VM migratability.

B. VMs marked as an Agent: This setting does not inherently make VMs non-migratable. It primarily affects roles and tasks within certain configurations.

C. Memory Overcommitted: While memory overcommitment can affect performance, it does not make VMs non-migratable. Nutanix AHV handles memory allocation dynamically.

D. VMs with attached Volume Groups: Correct answer, as the iSCSI connections used by Volume Groups are host-specific and cannot migrate seamlessly.