Explanation
Fordark site clusters, theNutanix Compatibility Bundlemust be downloaded prior to running LCM Inventory or updates. This bundle contains the necessary metadata and software binaries to perform inventory collection and upgrades in environments without internet connectivity.
A. Nutanix Foundation:Incorrect, as Foundation is used for initial deployments, not for LCM updates.
B. Nutanix Compatibility Bundle:Correct, as it contains the necessary files for offline LCM operations.
C. Nutanix Prism Central:Incorrect, as this does not pertain to offline updates. D. Nutanix Foundation Platform:Incorrect, as this is not required for LCM Inventory or updates. References:
Nutanix Life Cycle Manager Guide: Dark Site Configuration.
Nutanix Support Knowledge Base Article on Compatibility Bundles.

Explanation
TheNutanix Moveutility is specifically designed for migrating VMs between hypervisors, including from ESXi to AHV. It automates the migration process while ensuring minimal downtime. Nutanix Move supports pre-migration assessments and automates data transfer and VM configuration for AHV.
A. Move:Correct, as it is the Nutanix tool for hypervisor migrations.
B. acli:Incorrect, as acli is used for command-line configuration and management within AHV, not migration.
C. Flow:Incorrect, as Nutanix Flow focuses on network security and micro-segmentation.
D. Ncli:Incorrect, as Ncli is a command-line utility for cluster management, not migration.
References:
Nutanix Move Documentation: Supported Workflows.
Nutanix University Training on VM Migration.

Explanation
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.
References:
Nutanix AHV Administration Guide: Nutanix Documentation
Nutanix Support KB Article on Volume Groups and VM Migration Limitations.
Nutanix University Certification Materials, NCP and NCM course modules.

Explanation
The Controller VM (CVM) uses thevs0bridge by default to communicate with the AHV host it runs on. The vs0bridge is a virtual switch configured on the AHV host, providing connectivity between the CVM, virtual machines, and external networks. This setup ensures efficient network communication within the Nutanix cluster.
Other options:
virbro: Typically used in standalone KVM configurations, not in Nutanix AHV.
broandbridge0: Incorrect references to Nutanix networking structures.
References:
Nutanix AHV Networking Guide - Bridge Configuration.
Nutanix Prism Networking UI Documentation.

Explanation
The OpLog (Operational Log) in Nutanix serves as apersistent write bufferfor incoming I/O operations. It temporarily stores write requests to ensure fast acknowledgment to clients and better performance. The data is later coalesced and written to the Extent Store for long-term storage.
A. Persistent write buffer:Correct, as the OpLog optimizes write performance by buffering writes temporarily.
B. Persistent data storage:Incorrect, as this describes the Extent Store, not the OpLog.
C. Global metadata:Incorrect, as metadata operations are handled by the Metadata Store.
D. Dynamic read cache:Incorrect, as read caching is managed separately, often involving SSD-based caches.
References:
Nutanix Bible: Explanation of OpLog and Extent Store.
Nutanix University: NCP Certification Study Materials.

Explanation
To enable Windows Defender Credential Guard, the VM must be configured withUEFI(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, selectUEFIas the firmware type.
Ensure Secure Boot and VBS are enabled in the OS configuration.
References:
Microsoft Windows Defender Credential Guard Requirements.
Nutanix AHV VM Configuration Guide - UEFI Support.

Explanation
TheData Protectionfeature in Prism Element provides built-in disaster recovery capabilities by enabling asynchronous replication between Nutanix clusters. With a latency of 30ms between the two sites, asynchronous replication can ensure that data is replicated efficiently while adhering to recovery point objectives (RPO). The administrator can configure Protection Domains and Replication Targets to set up DR between the clusters.
A. Recovery Plan:Incorrect, as Recovery Plans are part of Prism Central for orchestrated failover, not Prism Element.
B. Protection Policies:Incorrect, as these are defined under Prism Central.
C. Data Protection:Correct, as it enables disaster recovery via replication configurations in Prism Element.
D. Metro Cluster:Incorrect, as Metro Cluster requires low latency (<5ms) and is not suitable for a 30ms latency scenario.
References:
Nutanix Data Protection and Disaster Recovery Guide.
Nutanix Bible: Data Protection Overview.

Explanation
By default, Nutanix Lifecycle Manager (LCM) auto-inventory runs at 2:00 AMlocal cluster time. LCM performs a daily check to gather information about available updates for firmware, software, and other components to ensure the cluster remains up-to-date. This operation is non-disruptive and does not impact cluster performance.
References:
Nutanix Lifecycle Manager (LCM) Documentation - Default Settings.
Nutanix Support Portal - LCM FAQ.

Explanation
To remove old VM snapshots, the task should be completed from the VM dashboard in Prism Element. This dashboard allows administrators to manage virtual machine-related operations, including snapshot creation, deletion, and restoration. Steps include:
Navigate to Prism Element > VM.
Select the VM for which snapshots need to be deleted.
Click on Snapshots, then delete the selected snapshots.
References:
Nutanix Prism Element Guide - VM Management.
Nutanix Support Portal - Snapshot Management.

Explanation
To rerun only the health checks that previously failed or issued warnings, the administrator can select theOnly Failed and Warning Checksoption in Prism Element. This targeted approach helps verify that resolved issues have been addressed without rerunning all checks unnecessarily.
Steps:
Navigate toPrism Element > Health > NCC Checks.
Filter forOnly Failed and Warning Checksand rerun them.
Other options:
A. Run LCM Pre-Upgrade: Runs pre-upgrade checks, not related to health check validation.
B. Runncc health_checks run_all: Executes all checks, not just failed ones.
C. Select Run Check for each check worked: Requires manual execution for each check.
References:
Nutanix Administration Guide - Health Checks.
Nutanix Cluster Check (NCC) Documentation.

Explanation
When a Nutanix cluster alert occurs, indicating maintenance mode issues, the most likely cause is that another node in the cluster is already in maintenance mode. Nutanix clusters enforce restrictions to prevent more than one node from entering maintenance mode simultaneously. This ensures the cluster can maintain resiliency and availability, adhering to the redundancy factor (RF) policy.
If another node is already in maintenance mode, the cluster cannot afford to have additional nodes enter maintenance without compromising data and service availability.
References:
Nutanix Cluster Best Practices Documentation - Maintenance Mode.
Nutanix Alerts and Events Guide, accessible via Prism UI.

Explanation
To create a VM template from an existing VM in Nutanix, the VM must be powered off. This ensures that the template is consistent and does not include any transient data or activity from the VM. Once the VM is powered off, the administrator can use the Prism UI to take a snapshot and designate it as a template.
A. Sysprep or Cloud-init script:These are optional for post-deployment configuration, not mandatory for creating a template.
B. The VM is powered on:This is incorrect, as the VM must be powered off.
C. Windows OS is installed:The OS type is irrelevant for creating a template.
D. The VM is powered off:Correct, as creating a template requires the VM to be in a powered-off state.
References:
Nutanix AHV Administration Guide: Nutanix Documentation
Nutanix University Certification Content for NCP and NCM.