Optimize Cluster Performance Using Monitoring and Scaling Features VCAP-VCF-VKS Practice Questions (Page 4)

Questions 16–20

1. 16application · medium

   A database VM in a cluster consistently experiences high latency, while other VMs on the same host are performing well. Monitoring shows the database VM is not reaching its CPU limit, but its shares are set to 'Normal'. The administrator wants to ensure the database VM gets preferential CPU treatment without affecting other VMs' reservations. What should the administrator do?

   • AIncrease the CPU shares for the database VM to 'High'
   • BSet a CPU reservation for the database VM equal to its maximum usage
   • CSet a CPU limit for the database VM to cap its usage
   • DMigrate the database VM to a different host manually
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2. 17foundation · easy

   Which approach is most appropriate for establishing a meaningful performance baseline for a cluster?

   • ASetting the baseline to the maximum possible values
   • BUsing a single snapshot of metrics at peak load
   • CBasing the baseline on vendor documentation only
   • DCollecting metrics during a period of typical workload activity
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4. 18expert · hard

   A vSphere cluster is experiencing performance issues. Monitoring shows that one host has high CPU ready time, while another host has high memory ballooning. The administrator suspects a bottleneck. Which analysis approach should the administrator take to identify the root cause?

   • AExamine per-VM metrics on both hosts to see which VMs are affected by CPU ready time and memory ballooning
   • BLook at the storage latency on the datastores
   • CReview vSphere DRS recommendations for the past week
   • DCheck the cluster's overall CPU and memory utilization
   Reveal Solution Discussion Select an answer first
5. 19foundation · easy

   What is the primary purpose of vSphere vMotion in the context of cluster scaling actions?

   • ATo migrate running VMs between hosts without downtime
   • BTo balance storage capacity across datastores
   • CTo restart VMs after a host failure
   • DTo automatically power off idle hosts
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6. 20application · medium

   A vSphere administrator notices that a cluster's average CPU ready time has increased from 5% to 15% over the past week, while memory utilization remains steady. The cluster hosts a mix of VMs with varying workloads. Which monitoring tool should the administrator use to further investigate which VMs are contributing to the CPU contention?

   • AvSphere Client's 'Monitor' tab for the cluster, selecting the 'Utilization' view
   • BvSphere Performance Charts with the 'CPU' counter group, adding the 'Ready' counter per VM
   • CvSphere Resource Management API to query current CPU shares and reservations
   • Desxtop interactive mode on each host, focusing on the 'M' (memory) screen
   Reveal Solution Discussion Select an answer first