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220-802 · Question #730

Which of the following is the MOST important system resource for virtual machines?

The correct answer is B. RAM. RAM is the most critical resource for virtual machines because each running VM requires its own dedicated block of memory. The host machine must have enough physical RAM to allocate to every active VM simultaneously, plus the host OS itself. Without sufficient RAM, VMs cannot…

Virtualization and cloud computing

Question

Which of the following is the MOST important system resource for virtual machines?

Options

  • AHard drive space
  • BRAM
  • CBIOS
  • DCPU

How the community answered

(49 responses)
  • A
    4% (2)
  • B
    94% (46)
  • C
    2% (1)

Explanation

RAM is the most critical resource for virtual machines because each running VM requires its own dedicated block of memory. The host machine must have enough physical RAM to allocate to every active VM simultaneously, plus the host OS itself. Without sufficient RAM, VMs cannot start or will perform extremely poorly due to excessive paging/swapping to disk. Hard drive space stores VM disk images but is less immediately constrictive. BIOS/UEFI provides hardware initialization but is not a runtime resource. CPU is important but can be time-shared more gracefully among VMs than RAM can be.

Topics

#virtual machines#RAM#system resources#hypervisor

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