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| Section | Objectives |
|---|---|
| Demonstrate and Understand Platform Health and Monitoring | - Perform and interpret a health check - Leverage support functions - Review and interpret workload performance - Review and interpret alerts and events |
| Describe Cluster Configuration and Maintenance | - Identify software maintenance tasks - Describe valid cluster options - Identify hardware maintenance tasks |
| Recognize Nutanix Solutions and Tools | - Recognize non-Nutanix Cloud Infrastructure (NCI) solutions, use cases, and features - Recognize use cases and features of Nutanix tools - Recognize Nutanix solutions, use cases, and features of Nutanix Cloud Infrastructure (NCI) technologies |
| Describe Nutanix Platform Administration | - Discuss storage operations - Describe virtual machine tasks - Identify virtual networking tasks - Describe licensing tasks |
>> NCA-7.5 Fragen Beantworten <<
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66. Frage
Which Nutanix storage feature reduces space usage by eliminating identical data blocks?
Antwort: D
Begründung:
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 .
67. Frage
Which condition will prevent Nutanix Guest Tools (NGT) from being installed in a VM?
Antwort: A
Begründung:
The guest VM must be powered on before Nutanix Guest Tools can be installed inside its operating system.
NGT is not merely a configuration attribute applied to the VM object. It is a software package containing components such as the Nutanix Guest Agent and supporting services that must be installed and executed within the running guest operating system. A powered-off VM cannot execute the installer, start the required services, or establish communication between the guest agent and the Controller VM.
Prism can enable NGT and mount its installer ISO under applicable conditions, including while a VM is powered off, but the actual software installation cannot complete until the guest operating system is running.
This distinction between mounting the installer and installing the software is critical.
NGT supports qualified Windows and Linux operating systems, so neither operating-system family inherently prevents installation. Administrators must instead confirm that the specific OS version is supported, that the VM is powered on, that valid credentials or interactive access are available, and that required CVM-to-guest connectivity exists. Once installed, NGT supports functions such as application-consistent snapshots, guest shutdown and restart, file-level recovery, and guest-agent communication.
NHCF/NCA reference: VM administration and Nutanix Guest Tools lifecycle. Official references: Setting Up NGT and Nutanix Guest Tools .
68. Frage
Which Nutanix solution provides microsegmentation and application-centric security policies for VMs?
Antwort: A
Begründung:
Flow Network Security provides application-centric microsegmentation and distributed security-policy enforcement for Nutanix workloads. It uses categories and application context to define which workloads may communicate, rather than depending exclusively on static IP addresses or physical VLAN boundaries.
Policies can follow VMs as they move or scale within supported Nutanix environments.
Microsegmentation limits east-west communication between application components and reduces the potential lateral movement of malware or unauthorized users. Administrators can define policies for application tiers, environments, user groups and isolation requirements, then manage those policies centrally through Prism Central. Flow Network Security also provides traffic visualization and policy-monitoring capabilities before enforcement.
AHV supplies the virtualization and host-compute layer but is not, by itself, the security-policy product identified by the question. AOS provides distributed storage, resilience and data services. Nutanix Disaster Recovery manages workload protection, replication and recovery rather than distributed microsegmentation.
NHCF/NCA reference: Nutanix Cloud Infrastructure solutions, networking and security capabilities; NCA Section 1, "Recognize Nutanix solutions, use cases and features of NCI technologies." Official references:
Flow Network Security , Nutanix Flow .
69. Frage
What Nutanix storage concept consists of groups of physical disks from one or more disk tiers?
Antwort: B
Begründung:
A Nutanix storage pool is the physical aggregation of disks contributed by the nodes in a cluster. The disks may come from one or more storage tiers, such as NVMe, SSD or HDD, depending on the supported hardware configuration. Each physical storage device belongs to a storage pool, and Nutanix generally recommends a single storage pool per cluster so AOS can optimize capacity and performance across the available devices.
A storage container is a logical subdivision of storage capacity presented from the storage pool.
Administrators apply settings such as compression, deduplication and other storage policies at the container level. Therefore, a container consumes capacity from a pool but is not itself the grouping of physical disks.
A volume group is a collection of virtual disks exposed to one or more VMs or external clients as block storage. "Disk group" is not the Nutanix AOS abstraction defined by the question.
The hierarchy is consequently physical disks, then the storage pool, followed by logical storage containers and workload-facing virtual disks or volume groups.
NHCF/NCA reference: Storage Concepts-AOS storage architecture, storage pools, containers and storage tiers; NCA Section 2, "Discuss storage operations." Official references: Prism 7.5-Storage Components , AOS 7.5-Nutanix Software Configuration .
70. Frage
Which number of node(s) can be placed into maintenance mode at the same time in a cluster?
Antwort: B
Begründung:
Nutanix permits only one node per cluster to be placed in maintenance mode at a time. This restriction protects cluster availability and ensures that sufficient compute, storage and metadata services remain operational while maintenance is performed. Before entering maintenance mode, Prism verifies whether the cluster has adequate resiliency and whether the workloads hosted by the node can be evacuated or otherwise handled safely.
For AHV, the maintenance workflow migrates eligible user VMs to other available hosts. The Controller VM on the affected node is then placed into an appropriate maintenance state so that storage services can continue through the remaining CVMs. Attempting to maintain multiple nodes simultaneously could exceed the cluster' s fault-tolerance capability, particularly if another unplanned node or disk failure occurs during the procedure.
The limitation is cluster-wide, not one node per hardware block. The absence of powered-on VMs also does not authorize every node to enter maintenance mode because AOS storage and cluster-control services still depend on quorum and service availability.
NHCF/NCA reference: Cluster maintenance, node maintenance, resiliency and hardware-maintenance procedures; NCA Section 3, "Identify hardware maintenance tasks." Official references: Prism 7.5-Node Maintenance Mode , AOS 7.5-ESXi Node Maintenance .
71. Frage
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