A systems administrator wants the VMs on the hypervisor to share CPU resources on the same core when feasible. Which of the following will BEST achieve this goal?

Question

Options

• AConfigure CPU passthrough.
• BOversubscribe CPU resources.
• CSwitch from a Type 1 to a Type 2 hypervisor.
• DIncrease instructions per cycle.
• EEnable simultaneous multithreading.

• C
  3% (1)
• D
  7% (2)
• E
  90% (26)

Explanation

Simultaneous Multithreading (SMT)-Intel's implementation is called Hyper-Threading-allows a single physical CPU core to present itself as two logical processors. The core can execute instructions from multiple threads at the same time by utilizing idle execution units within the core. In a virtualization context, this means multiple VMs can share the same physical core's execution resources concurrently, which is precisely the stated goal. CPU passthrough dedicates physical CPU resources to a single VM, preventing sharing. Oversubscribing CPU allocates more vCPUs than physical cores exist but does not ensure cores are actually shared simultaneously. Switching hypervisor types does not affect CPU sharing behavior. Increasing instructions per cycle (IPC) is a hardware design metric, not an administrator-configurable setting.

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