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

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Which condition can indicate a potential CPU performance issue for a virtual machine?

  1. A virtual machine has CPU limits configured

  2. A virtual machine is configured for single-threaded processing

  3. A virtual machine is configured without SSDs

  4. A virtual machine has no CPU reservations

The correct answer is: A virtual machine has CPU limits configured

A potential CPU performance issue for a virtual machine can be indicated when CPU limits are configured. When a limit is set on the amount of CPU resources that a virtual machine can use, it restricts the VM's ability to utilize available CPU resources fully. If the workload demands exceed the configured limit, the virtual machine may experience performance degradation, as it cannot access the necessary CPU cycles to execute tasks efficiently. This situation can lead to increased latencies and reduced responsiveness for applications running within the VM. The other aspects mentioned, such as single-threaded processing, configuration without SSDs, and lack of CPU reservations, do not directly indicate CPU performance issues in the same way. Single-threaded processing relates to how workloads are executed rather than a limitation on CPU usage itself. Not having SSDs generally affects storage performance rather than CPU performance. While having no CPU reservations means the VM could potentially use more CPU resources when available, it doesn’t inherently signal a performance issue; it simply indicates that there is no guaranteed allocation of CPU resources, which may or may not result in a performance impact depending on the overall resource contention in the environment.

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