VMware Certified Professional - Data Center Virtualization (VCP-DCV) Practice Exam

Based on vRealize Operations alerts, what action would correctly address performance problems observed in a virtual machine?

1. Increase the number of vCPUs for the virtual machine.

2. Increase the allocation of memory for the virtual machine.

3. Increase the Memory limit for the virtual machine.

4. Increase the reservation for vCPUs for the virtual machine.

The correct answer is: Increase the number of vCPUs for the virtual machine.

Increasing the number of vCPUs for the virtual machine is a valid action to address performance problems, particularly if the alerts indicate that the VM is experiencing CPU contention. When a virtual machine has insufficient vCPUs, it may struggle to handle the workloads efficiently, especially during peak demand or high resource utilization periods. By adding more vCPUs, you allow the VM to execute more threads simultaneously, improving its responsiveness and overall performance. It's important to consider the specific performance metrics being reported. If vRealize Operations shows high CPU usage or alerts related to CPU limits being reached, adding vCPUs can directly mitigate these issues by providing the VM with more processing power. However, this action should be taken in conjunction with analyzing overall resource allocation to ensure that host resources can adequately support the additional vCPUs without causing contention at the hypervisor level. While increasing memory allocation or changing memory limits might address other types of performance issues, they would not directly resolve CPU-related problems highlighted by the alerts. Similarly, adjusting vCPU reservations may help manage resource allocation better but does not inherently increase CPU resources available to the VM. Therefore, the option to increase vCPUs most directly addresses the performance concerns tied to CPU utilization.