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| Section | Objectives |
|---|---|
| Topic 1: Describe Nutanix Platform Administration | - Describe virtual machine administration tasks - Describe licensing tasks - Discuss storage operations - Identify virtual networking tasks |
| Topic 2: Demonstrate and Understand Platform Health and Monitoring | - Review and interpret alerts and events - Perform and interpret health checks - Review and interpret workload performance - Leverage support functions |
| Topic 3: Recognize Nutanix Solutions and Tools | - Recognize non-NCI Nutanix technologies, features, and use cases - Recognize Nutanix Cloud Infrastructure (NCI) technologies, features, and use cases - Recognize Nutanix tools, features, and use cases |
| Topic 4: Describe Cluster Configuration and Maintenance | - Identify software maintenance tasks - Describe supported cluster configuration options - Identify hardware maintenance tasks |
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NEW QUESTION # 25
Which Nutanix storage feature reduces space usage by eliminating identical data blocks?
Answer: B
Explanation:
Deduplication reduces storage consumption by identifying duplicate data blocks and consolidating them so that redundant physical copies do not need to be retained. AOS uses fingerprints to recognize eligible duplicate blocks. Capacity deduplication applies this process to persistent data within a storage container, reducing the physical space consumed by workloads containing substantial repeated content.
Compression is different: it encodes a data block into a smaller representation but does not eliminate identical blocks by replacing them with a shared instance. Erasure Coding reduces the storage overhead associated with maintaining replicated cold data by substituting parity information for certain redundant copies. It is a resilience and capacity-efficiency mechanism, not duplicate-block elimination. Capacity Tiering concerns placement across storage tiers and does not consolidate identical content.
Deduplication should be enabled selectively because fingerprint generation and metadata processing introduce overhead. It is most beneficial for workloads with significant duplicate data, such as appropriate persistent- desktop or full-clone environments. Workloads already using space-efficient Nutanix clones may receive limited additional benefit.
The defining phrase in the question is "eliminating identical data blocks," which is the standard function of deduplication.
NHCF/NCA reference: AOS storage efficiency, capacity deduplication, compression, and erasure coding.
Official references: Deduplication and Storage Components .
NEW QUESTION # 26
Which component is used to present Nutanix storage as iSCSI block targets to external (non-virtualized) servers?
Answer: B
Explanation:
A Volume Group is the Nutanix storage component used to present block storage through iSCSI to external clients, including physical or otherwise non-virtualized servers. A Volume Group contains one or more virtual disks and can be attached directly to an AHV VM or exposed through iSCSI to qualified external initiators.
External client access is controlled by defining the relevant initiator information and establishing the iSCSI connection to the Volume Group.
A storage container is a logical storage boundary used for VM data placement and for settings such as replication factor, compression, deduplication, and erasure coding. Although Volume Group data ultimately consumes capacity from a container, the container itself is not presented as an iSCSI block target.
A storage pool aggregates the physical storage resources contributed by cluster nodes. It operates below the storage-container and workload-consumption layers and is not directly assigned to an external server. A vDisk template is also not the external block-presentation object.
The examination distinction is between the underlying storage hierarchy and the consumer-facing block- storage object. Storage pools supply capacity, containers provide logical policy boundaries, and Volume Groups organize vDisks for direct or iSCSI-based attachment.
NHCF/NCA reference: Nutanix storage operations, Volume Groups, external clients, and iSCSI connectivity.
Official references: Storage Components and Volume Group Details .
NEW QUESTION # 27
What happens to pinned and Replication Factor 1-enabled VMs on a cluster node that is entering maintenance mode?
Answer: A
Explanation:
Pinned VMs and Replication Factor 1-enabled VMs with node affinity cannot be safely live migrated during host maintenance. Prism therefore identifies these VMs as non-migratable and requires them to be powered off before the node can complete entry into maintenance mode.
A pinned VM has a placement constraint binding it to a particular host. Moving it automatically would violate that constraint. An RF1-enabled VM has only one copy of its applicable vDisk data. When that data is associated with the node entering maintenance, another host cannot provide the same resilient storage access expected for an ordinary RF2 or RF3 VM. Powering off prevents the workload from continuing in an unsupported or inaccessible state.
Normal live-migratable VMs are moved to other nodes, subject to available CPU and memory capacity. HA- protected workloads can also be relocated according to the maintenance workflow. Pinned and RF1-affined VMs are handled separately, and Prism prompts the administrator to confirm their shutdown.
Before proceeding, the administrator should identify business impact, obtain an approved outage window, confirm cluster resiliency, and verify that affected applications can be restarted after the node exits maintenance mode.
NHCF/NCA reference: Node maintenance, VM migration restrictions, affinity, and RF1 behavior. Official references: Node Maintenance Mode and Putting a Host into Maintenance Mode .
NEW QUESTION # 28
An administrator is troubleshooting resource availability within the cluster. As part of the troubleshooting, the administrator wants to build a list of powered-off VMs on the Nutanix cluster.
In order for these VMs to be listed in the Prism Central VM Efficiency widget, how many days must the VMs be powered off to be considered a Dead VM?
Answer: C
Explanation:
Prism Central classifies a virtual machine as a Dead VM after it has remained powered off for at least 30 days. The VM Efficiency capability uses this duration to distinguish temporarily stopped workloads from VMs that are sufficiently inactive to justify administrative review. Consequently, a VM powered off for only
5 or 15 days does not meet the classification threshold, while 45 days exceeds-but does not define-the required minimum.
A Dead VM is not automatically deleted. The classification is an efficiency finding intended to identify resources that may no longer be required. Even while powered off, the VM can continue consuming storage through its virtual disks, snapshots, recovery points, and associated configuration objects. Administrators should therefore validate application ownership, retention requirements, protection policies, and compliance obligations before deleting or archiving it.
The VM Efficiency widget is part of Prism's broader behavioral and capacity-optimization functionality.
Other inefficiency classifications can identify overprovisioned or constrained VMs by evaluating historical resource behavior. The 30-day rule is specifically associated with the powered-off Dead VM condition and should not be confused with utilization-based efficiency findings.
NHCF/NCA reference: Prism Central monitoring, VM efficiency, resource optimization, and behavioral analysis. Official reference: Behavioral Learning Tools and VM Efficiency , specifically the Dead VM classification.
NEW QUESTION # 29
On an AHV host, what is the factory-configured default native Linux bridge?
Answer: B
Explanation:
The factory configuration of an AHV host includes a native Linux bridge named virbr0. This bridge is separate from the Open vSwitch components used for normal AHV workload and infrastructure networking.
Administrators should preserve the factory-defined bridge unless a specific Nutanix procedure instructs otherwise.
The similarly named components in the other options serve different purposes. br0 is the factory-configured default Open vSwitch bridge. It contains the physical uplink interfaces and internal ports used by the AHV networking architecture. vs0 is the default AHV virtual-switch configuration associated with br0; it is a logical virtual-switch object rather than a native Linux bridge. ovsbr0 is not the factory-default bridge name in the documented AHV configuration.
This distinction is operationally important when interpreting commands such as ovs-vsctl, Linux bridge utilities, interface listings, or network-troubleshooting output. Confusing virbr0 with br0 can lead an administrator to modify the wrong networking component and potentially disrupt host, CVM, or guest connectivity. Nutanix documentation explicitly identifies the native Linux bridge as virbr0. Reference: AHV
- About Open vSwitch . NHCF alignment: AHV virtual networking components and default bridge architecture.
NEW QUESTION # 30
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