VMware vSphere 6 Virtualization of Computer Resource Practice Test

VM CPU affinity enhances performance by assigning specific physical CPUs to a virtual machine. This dedicated assignment means that the virtual machine consistently runs on the same physical CPU cores, minimizing the overhead that can occur due to context switching and improving cache locality. When a VM is bound to specific CPUs, it can take advantage of the CPU cache more effectively since the CPU can store frequently accessed data locally, resulting in faster data access and improved application performance.

This approach is particularly beneficial for applications with predictable CPU demand or those that maintain a steady state of operations where data locality is essential. By ensuring that a VM does not migrate between different CPUs, CPU affinity helps maintain optimal processing efficiency and reduces latency.

Other options may refer to different aspects of CPU resource management but do not specifically address the performance benefits derived from dedicated CPU assignment. For instance, sharing the same CPU among multiple VMs could lead to contention and resource competition, while distributing workloads evenly might not always ensure optimal performance for a particular VM. Similarly, reallocating unused CPU power at runtime can be beneficial but does not directly leverage the performance enhancements provided through dedicated CPU affinity.