Broadcom-VMware
2V0-622 · Question #166
2V0-622 Question #166: Real Exam Question with Answer & Explanation
The correct answer is A: Virtual machine 9 has a 100% memory reservation.. A full memory reservation exempts a VM from ballooning and swapping, while the absence of VMware Tools removes the balloon driver yet still allows host-level swapping to occur.
Question
An administrator notices that 8 out of 10 virtual machines have memory ballooning and swapping. However, virtual machine 9 is not ballooning or swapping and virtual machine 10 is not ballooning but is swapping. Which two statements explain the behavior of virtual machine 9 and virtual machine 10? (Choose two.)
Options
- AVirtual machine 9 has a 100% memory reservation.
- BVirtual machine 10 has a memory limit configured.
- CVirtual machine 9 has memory shares set to HIGH.
- DVirtual machine 10 does not have VMware Tools enabled or installed.
Explanation
A full memory reservation exempts a VM from ballooning and swapping, while the absence of VMware Tools removes the balloon driver yet still allows host-level swapping to occur.
Common mistakes.
- B. A memory limit constrains the maximum memory a VM may consume but does not prevent ESXi from applying ballooning or swapping to that VM when the host is under memory pressure.
- C. High memory shares give a VM scheduling priority during contention but do not create a complete exemption from ballooning - ESXi may still balloon the VM, just at a lower priority than VMs with fewer shares.
Concept tested. VMware memory reclamation - reservation, balloon driver, and host swap interaction
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