What does VM CPU affinity help achieve in a virtual environment?

VM CPU affinity is a feature in virtualization that allows a virtual machine (VM) to be bound to specific physical CPUs within the host system. This can lead to optimized CPU performance for those VMs, as it minimizes the overhead that can be caused by CPU switching. By designating certain processors for use by particular VMs, the system can take advantage of the CPU cache more effectively and reduce latency, thus improving the overall performance of the VM. This level of customization ensures that VMs requiring high CPU performance, perhaps due to resource-intensive applications, can consistently operate with the necessary processing power.

The other options do not accurately reflect the primary benefits of CPU affinity. Memory allocation pertains to how RAM is assigned to VMs rather than CPU resources. Security of VM data is primarily handled through other means such as encryption and access control measures, rather than through CPU affinities. Network throughput, while important for VM performance, depends more on networking configurations and bandwidth than CPU affinity.