305-300: LPIC-3 Virtualization and ContainerizationDemo

By LPI · Question Mode

QuestionQ9

Full Virtualization

Which of these statements about the CPU of a QEMU virtual machine are true?

Choose two
  • A The CPU architecture of a QEMU virtual machine is independent of the host system’s architecture.
  • B Each QEMU virtual machine can only have one CPU with one core.
  • C For each QEMU virtual machine, one dedicated physical CPU core must be reserved.
  • D QEMU uses the concept of virtual CPUs to map the virtual machines to physical CPUs.
  • E QEMU virtual machines support multiple virtual CPUs in order to run SMP systems.
Explanation

QEMU presents virtual CPUs (vCPUs) to a guest, which are executed using host CPU resources and can be scheduled onto physical CPUs. Its -smp configuration simulates symmetric multiprocessing and supports multiple virtual CPUs; the supported maximum depends on the selected machine type. A physical CPU core does not have to be dedicated to each VM, and a VM is not restricted to one single-core CPU.

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