Nutanix Certified Associate Practice Exam

What is the impact of increasing the vCPU count on VDI VMs in a constrained cluster environment?

1. Increasing CPU counts will decrease memory utilization

2. Increase CPU ready%

3. Increase memory utilization%

4. Increase CPU utilization%

The correct answer is: Increase CPU ready%

Increasing the vCPU count on Virtual Desktop Infrastructure (VDI) virtual machines in a constrained cluster environment generally leads to higher CPU ready time percentages. CPU ready time is a metric that indicates the amount of time a virtual machine is ready to run but is waiting for CPU resources to become available. When you increase the number of vCPUs without having sufficient physical CPU resources in the cluster, these additional vCPUs can lead to contention for CPU resources. In a constrained environment, where the available CPU resources are limited, more vCPUs are likely to cause more virtual machines to wait for time on the physical CPUs. This scenario results in an increase in CPU ready time, as the VMs with more vCPUs find themselves queued for processing. Therefore, the statement about an increase in CPU ready percentage is correct because it accurately reflects the impact of allocating more vCPUs than the physical CPUs can accommodate effectively in such environments. The other options do not correctly represent the consequences of increasing vCPUs in a constrained environment. For instance, while increasing vCPUs may influence memory utilization, it does not have a direct effect on reducing memory utilization, as adding more vCPUs does not inherently change how memory is allocated or used. Similarly, while