Nutanix Exam Quality Assurance & Improvement 5 — Questions and Answers
Question 1: Which Nutanix feature enables administrators to set I/O performance guarantees for specific VMs or storage containers?
- Storage QoS (Quality of Service) policies (Correct answer)
- Acropolis Dynamic Scheduler priority classes
- Prism Pro Anomaly Detection thresholds
- Erasure Coding priority tiers
Correct answer: Storage QoS (Quality of Service) policies
Storage QoS policies in Nutanix allow setting IOPS or throughput limits and reservations on storage containers to prevent noisy-neighbor issues.
Question 2: What is the significance of the 'Extent Store Usage' metric in Nutanix performance analysis?
- It measures how much of the SSD tier is used by the OpLog write buffer
- It tracks the percentage of data blocks consumed in persistent storage after OpLog draining (Correct answer)
- It indicates the current deduplification ratio across all storage containers
- It monitors CVM memory allocated to in-flight I/O operations
Correct answer: It tracks the percentage of data blocks consumed in persistent storage after OpLog draining
Extent Store Usage reflects persistent storage consumption after write data has drained from OpLog, giving a true picture of backend storage utilization.
Question 3: A Nutanix administrator notices that OpLog usage remains persistently high. What does this most likely indicate?
- Snapshots are consuming excessive metadata space
- Write I/O is exceeding the rate at which the system can drain to the Extent Store (Correct answer)
- The cluster's deduplication fingerprinting is causing CPU saturation
- NCC is running background checks that compete with VM workloads
Correct answer: Write I/O is exceeding the rate at which the system can drain to the Extent Store
Persistently high OpLog usage means incoming writes are outpacing the drain process, which can cause write latency increases as OpLog space fills.
Question 4: Which Nutanix Prism Central capability allows administrators to define and enforce policies that automatically remediate detected anomalies?
- Prism Pro X-Play (Playbooks) (Correct answer)
- NCC auto-remediation scripts
- Calm DSL policy engine
- LCM compliance enforcement mode
Correct answer: Prism Pro X-Play (Playbooks)
X-Play Playbooks in Prism Pro allow administrators to create automated workflows that trigger on alerts and take remediation actions like VM restart or notification.
Question 5: In a Nutanix environment, what is the purpose of running a 'log_collector' operation before engaging Nutanix Support?
- To compress and delete old logs to reclaim CVM disk space
- To gather comprehensive cluster logs into a bundle for Support to analyze (Correct answer)
- To stream real-time logs to the Nutanix NEXT community portal
- To validate that log rotation is functioning correctly on all CVMs
Correct answer: To gather comprehensive cluster logs into a bundle for Support to analyze
Log Collector bundles CVM logs, NCC outputs, and cluster metadata into a single archive that Support engineers use to diagnose issues efficiently.
Question 6: Which approach best improves long-term data quality and integrity on a Nutanix cluster running mixed workloads?
- Disabling compression on all containers to reduce CPU overhead
- Implementing container-level separation for workloads with distinct performance and resiliency needs (Correct answer)
- Consolidating all VMs into a single storage container for simplified management
- Increasing snapshot retention to 90 days for all VMs regardless of workload type
Correct answer: Implementing container-level separation for workloads with distinct performance and resiliency needs
Separating workloads into dedicated containers with tailored RF, compression, deduplication, and QoS settings ensures each workload gets appropriate data quality treatment.
Question 7: What does the Nutanix 'Cluster Health' score in Prism Central aggregate to produce its rating?
- Only hardware component status from IPMI and disk SMART data
- NCC check results, alert severity, and data resiliency status combined into a composite score (Correct answer)
- Average VM latency and IOPS relative to the cluster's rated performance baseline
- License compliance status and Pulse telemetry transmission success rate
Correct answer: NCC check results, alert severity, and data resiliency status combined into a composite score
The Cluster Health score combines NCC check outcomes, active alert severities, and resiliency status to give a single at-a-glance quality indicator.
Nutanix Exam Quality Assurance & Improvement 5
Which Nutanix feature enables administrators to set I/O performance guarantees for specific VMs or storage containers?