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| Section | Objectives |
|---|---|
| Describe Cluster Configuration and Maintenance | - Hardware maintenance procedures - Valid cluster configuration options - Software updates and Life Cycle Management (LCM) |
| Demonstrate and Understand Platform Health and Monitoring | - Support case creation and diagnostic tools - Alerts, events, and performance monitoring - Cluster health checks and resiliency status |
| Describe Nutanix Platform Administration | - Basic virtual networking configuration - Virtual machine management tasks - Storage operations and licensing management |
| Recognize Nutanix Solutions and Tools | - Use cases and features of Nutanix management and operational tools - Nutanix solutions, use cases, and features of Nutanix Cloud Infrastructure (NCI) Technologies |
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質問 # 56
What Nutanix storage concept consists of groups of physical disks from one or more disk tiers?
正解：B
解説：
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 .
質問 # 57
Which Nutanix product provides unstructured file-storage services through SMB and NFS for home directories and user profiles on a Nutanix cluster?
正解：A
解説：
Nutanix Files is the scale-out file-storage service designed to provide SMB shares and NFS exports for unstructured data. Typical use cases include user home directories, roaming or virtual-desktop profiles, departmental shares, application logs, archives, and general enterprise file services. Files deploys File Server VMs that present the client-facing file protocols while using the Nutanix distributed storage layer underneath.
Nutanix Move is a workload-migration utility used to transfer VMs between supported source and target platforms; it does not provide file shares. Nutanix Volumes supplies block-storage services, commonly exposed through iSCSI, for applications that require block devices rather than SMB or NFS file systems.
Nutanix Objects provides S3-compatible object storage and is intended for applications using object APIs rather than conventional file protocols.
The presence of SMB, NFS, home directories, and user profiles makes the use case specifically file-oriented.
Nutanix documentation identifies Files as a repository for unstructured data and lists home directories and user profiles among its standard workloads. Reference: Nutanix Files Storage Technical Note . NHCF alignment: differentiating Files, Volumes, Objects, and migration services by protocol and workload type.
質問 # 58
A VM is experiencing delays even though its own CPU usage appears low.
Which metric should be checked to identify scheduling issues?
正解：B
解説：
CPU Ready measures the time during which a virtual CPU is prepared to execute but is waiting for the hypervisor to schedule it on a physical processor. A VM can therefore report low apparent CPU consumption while still responding slowly: its workload is not continuously executing because the assigned vCPUs are waiting for physical CPU time.
Elevated CPU Ready commonly indicates physical CPU contention, excessive vCPU allocation, an unfavorable vCPU-to-core ratio, or competition from other VMs on the host. The administrator should correlate CPU Ready with host CPU utilization, VM sizing, the number of runnable vCPUs, and workload behavior. Assigning additional vCPUs without confirming the cause can worsen scheduling delays because the hypervisor may need to coordinate more virtual processors.
Disk capacity measures available storage space and does not identify processor scheduling latency. Memory usage can reveal pressure, swapping, or insufficient guest memory, but it does not directly represent time spent waiting for CPU scheduling. Snapshot size relates to retained point-in-time storage data and is unrelated to hypervisor CPU dispatch. Nutanix identifies CPU Ready Time as the percentage of CPU wait time, making it the appropriate metric. Reference: Nutanix Intelligent Operations - VM Details and CPU Ready Time .
NHCF alignment: workload performance interpretation.
質問 # 59
What would cause storage compression to become automatically disabled?
正解：D
解説：
Nutanix AOS automatically disables compression when metadata usage becomes high. The Prism 7.5 storage documentation explicitly identifies this condition and states that an alert is generated when automatic disablement occurs. Consequently, option D is the verified answer, replacing the supplied answer A.
Compression requires AOS metadata resources to track compressed extents and the associated data layout. If metadata consumption reaches a protective threshold, continuing compression could place additional pressure on the metadata services required for normal storage operation. AOS therefore prioritizes platform stability and metadata availability by disabling compression and notifying the administrator. The corresponding health alert should be investigated to determine why metadata usage has increased and whether workload characteristics or another storage condition requires remediation.
High write activity may increase storage workload and influence when post-process compression can execute, but it is not the documented automatic-disable trigger in this question. High reads similarly do not directly cause compression to be disabled. High physical-capacity consumption generates its own capacity warnings and corrective requirements but is distinct from the metadata threshold governing compression.
NHCF/NCA reference: Storage Concepts-capacity optimization, compression and storage-container administration; NCA Section 2, "Discuss storage operations." Official references: Prism 7.5-Compression , Prism 7.5-Storage Alert Reference .
質問 # 60
An administrator wants Prism Central to display CPU utilization for five virtual machines over the past 24 hours.
Which chart type should be used?
正解：C
解説：
A Metric Chart is designed to display one selected performance metric across one or more entities. In this scenario, CPU utilization is the single metric, while the five virtual machines are the multiple entities being compared. The chart's time range can be set to the previous 24 hours so that utilization trends and differences among the VMs are visible over a common interval.
Nutanix distinguishes a Metric Chart from an Entity Chart by what remains constant. A Metric Chart fixes the metric and permits multiple entities. An Entity Chart fixes the entity and displays one or more metrics for that entity. Therefore, if the administrator wanted to examine CPU utilization, memory utilization, IOPS, and network throughput for one VM, an Entity Chart would be appropriate. That is not the requirement presented here.
A Gantt chart represents task duration or scheduled activity along a timeline and is not the Prism performance- comparison chart for this use case. A pie chart represents composition at a point in time and is unsuitable for displaying historical CPU behavior across a 24-hour period.
The determining relationship is therefore one metric-CPU utilization-mapped to five VM entities, which directly matches the Metric Chart definition.
NHCF/NCA reference: Prism analysis, performance monitoring, entity selection, metrics, and time-range configuration. Official references: Prism 7.5 Analysis Dashboard and Creating a Metric Chart .
質問 # 61
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