在IT領域工作的你，肯定想通過IT 認證考試來證明自己的能力吧？而且，擁有IT 認證資格的同事和朋友也愈來愈多了吧。在這種情況下，如果一個資格都沒有就趕不上別人了。那麼，你決定參加哪個考試呢？Nutanix的考試怎麼樣呢？比如像NCA-7.5認證考試這樣的考試。這是非常有價值的考試，肯定能幫助你實現你的願望。
| Section | Objectives |
|---|---|
| Topic 1: Describe Cluster Configuration and Maintenance | - Identify hardware maintenance tasks - Identify software maintenance tasks - Describe supported cluster configuration options |
| Topic 2: Describe Nutanix Platform Administration | - Discuss storage operations - Describe licensing tasks - Describe virtual machine administration tasks - Identify virtual networking tasks |
| Topic 3: Demonstrate and Understand Platform Health and Monitoring | - Review and interpret alerts and events - Leverage support functions - Perform and interpret health checks - Review and interpret workload performance |
| Topic 4: Recognize Nutanix Solutions and Tools | - Recognize Nutanix tools, features, and use cases - Recognize Nutanix Cloud Infrastructure (NCI) technologies, features, and use cases - Recognize non-NCI Nutanix technologies, features, and use cases |
在這個資訊時代，IT行業被很多人關注，但是在如今人才濟濟的社會裏任然比較缺乏IT人。很多公司都招聘IT人才，他們一般考察IT人才的能力會參考他們擁有的IT相關認證證書，所以擁有一些IT相關的認證證書是受很多公司歡迎的。但是這些認證證書也不是很容易就能拿到的。Nutanix NCA-7.5 就是一個相當有難度的認證考試，雖然很多人報名參加Nutanix NCA-7.5考試，但是通過率並不是很高。
問題 #73
An administrator needs to decrease the number of CPUs assigned to a VM.
What is the first step?
答案：D
解題說明：
The VM must be powered off before the administrator can reduce its CPU allocation. CPU hot-plug capabilities permit supported guest operating systems to receive additional virtual CPU resources while running, but they do not provide a supported mechanism for removing active processors from a powered-on VM. Nutanix documentation states that the number of CPUs cannot be decreased while the VM is powered on.
After shutting down the guest cleanly and confirming that the VM is off, the administrator can edit the VM configuration, reduce the required vCPU count or associated CPU topology, save the change, and restart the VM. The proposed configuration must remain valid-for example, the relationship between sockets, vCPUs, and cores must be supported.
Enabling Hot-Add addresses CPU expansion rather than reduction. Nutanix Guest Tools supplies guest integration and operational capabilities but does not override hypervisor restrictions on CPU removal. A snapshot may be useful as an optional change-control precaution, but it does not make CPU reduction possible and is not the required first step.
The technically necessary action is therefore to power off the VM. Reference: AHV - Virtual Machine Memory and CPU Hot-Plug Configurations . NHCF alignment: modifying VM compute resources and understanding hot-plug limitations.
問題 #74
Refer to the exhibit.
The VM memory-usage graph shows a measured value of approximately 42.95%, with the utilization line remaining inside the blue baseline band.
What should be considered regarding memory usage?
答案：A
解題說明：
The VM's memory-consumption line remains inside the blue baseline band, so its behavior falls within the learned baseline range. Prism Central uses historical observations and machine-learning analysis to establish the range of values normally expected for an entity and metric. The blue band represents that expected operating range; a value outside the band may be identified as anomalous, depending on duration and deviation.
The displayed value of approximately 42.95% is below 50%, which immediately invalidates option A. More importantly, memory-utilization percentage represents the portion of the VM's allocated memory currently being consumed. It does not mean the host can provide only that percentage of the requested memory, so option C incorrectly interprets utilization as a resource-allocation failure.
The graph also does not provide sufficient evidence to halve the VM's configured memory. Right-sizing requires longer-term utilization, swap activity, workload requirements, peak behavior, and operational policy-not a single observed percentage. Option D therefore recommends an unsupported configuration change.
The correct operational conclusion is limited and precise: the measured behavior is within the VM's learned normal range and is not shown as an anomaly.
NHCF/NCA reference: Prism metrics, behavioral baselines, anomalies, and VM monitoring. Official references: Prism Central Metrics Tab and Cluster Details and Baseline Range .
問題 #75
A VM shows increasing CPU Ready values while overall CPU usage remains unchanged.
What does this behavior suggest?
答案：A
解題說明：
CPU Ready measures the time during which a virtual CPU is ready to execute but cannot be scheduled on a physical CPU. Increasing CPU Ready while the VM's actual CPU usage remains unchanged indicates that the workload wants processor time but the hypervisor cannot schedule it promptly. This most commonly points to host CPU contention, oversubscription, or effectively exhausted CPU scheduling capacity.
This condition is not evidence that the VM lacks assigned vCPUs. Adding more vCPUs can make the problem worse because the hypervisor may have greater difficulty scheduling a larger virtual CPU configuration. The administrator should examine host CPU utilization, physical-core availability, CPU overcommitment, NUMA alignment, VM sizing, other high-demand VMs, and any CPU limits or affinity constraints.
Memory exhaustion produces different indicators, including swapping, ballooning, or elevated memory wait behavior. A full disk would affect storage capacity and possibly I/O latency but would not directly create CPU Ready time.
The wording "host CPU resources are exhausted" should be understood as unavailable or heavily contended physical scheduling capacity, not necessarily that every processor reports exactly 100% utilization. CPU Ready measures scheduling delay and can reveal contention that VM CPU usage alone does not expose.
NHCF/NCA reference: VM performance metrics, CPU contention, and troubleshooting resource constraints.
Official references: Interpreting CPU Ready Values , CPU Ready Time , and Prism Alert Metrics .
問題 #76
An administrator is working with Nutanix Support and has been asked to submit the NCC logs for further review.
How should the administrator gather the logs for the support case?
答案：D
解題說明：
The supported Prism Element workflow for gathering diagnostic data is the Collect Logs feature. From the Health dashboard, the administrator opens the Actions menu, selects Collect Logs, identifies the relevant nodes and components, specifies the required time range or collection parameters, and starts the log-collection task. The resulting archive can then be associated with or uploaded for the Nutanix Support case.
Pulse is a proactive support and telemetry capability that periodically provides diagnostic system information to Nutanix. It does not automatically transmit every detailed NCC or component log required for a specific investigation. Nutanix documentation notes that when Pulse data is insufficient for diagnosis, Support may request a separate diagnostic log collection.
"Export Logs" and "Download Logs in Prism Central" are not the documented names of the NCC collection workflow described in the question. The explicit Health dashboard operation is Collect Logs. This process also allows the administrator to control which nodes and components are included, preventing irrelevant data from unnecessarily enlarging the support bundle. Reference: Prism 7.5 - Collecting Logs Using Prism Element . NHCF alignment: collecting support data, using health functions, and collaborating with Nutanix Support.
問題 #77
Refer to the exhibit.
A cluster is showing the alert in the attached image.
What is the recommended method to quickly determine possible causes and corrective actions for this alert?
答案：D
解題說明：
The alert title is the navigation control used to open the alert details page. That page consolidates the information needed to investigate the condition, including the alert description, severity, creation time, affected entity, possible causes, and recommended corrective actions. Nutanix documentation states that an administrator displays an alert's details by clicking its title.
The Source Entity link leads to information about the affected object-for example, a disk, controller VM, host, or cluster. Entity information may be useful later in the investigation, but it is not the direct route to the alert-specific cause and resolution guidance requested in the question. The selection box merely selects the record for supported bulk or administrative operations. Email Configuration controls alert-notification delivery and does not diagnose the active alert.
Copying the title into a public search engine is also inferior to using the contextual information already maintained in Prism. Search results may apply to different software releases or environmental conditions, whereas the details page is connected to the actual alert instance and entity. Therefore, clicking the alert title is the fastest supported diagnostic path. References: Prism Central - Alerts Summary View and Prism 7.5 - Alert Details . NHCF alignment: interpreting and investigating alerts.
問題 #78
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