Memory interview questions

12 real Memory questions from the Virtualization bank, as asked in Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd — free to start.

1. What is ESXi memory reclamation order?

Senior
  1. A.a guest driver reclaiming idle guest memory back to the host
  2. B.the last-resort memory reclaim to disk, with a severe performance hit
  3. C.deduplicating identical memory pages across or within VMs
  4. D.TPS → ballooning → compression → swapping
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3. Which statement is correct?

Senior
  1. A.ESXi memory reclamation order — a guest driver reclaiming idle guest memory back to the host
  2. B.ESXi memory reclamation order — TPS → ballooning → compression → swapping
  3. C.ESXi memory reclamation order — the last-resort memory reclaim to disk, with a severe performance hit
  4. D.ESXi memory reclamation order — deduplicating identical memory pages across or within VMs
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4. What is memory ballooning?

Mid
  1. A.deduplicating identical memory pages across or within VMs
  2. B.the last-resort memory reclaim to disk, with a severe performance hit
  3. C.TPS → ballooning → compression → swapping
  4. D.a guest driver reclaiming idle guest memory back to the host
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6. Which statement is correct?

Mid
  1. A.memory ballooning — deduplicating identical memory pages across or within VMs
  2. B.memory ballooning — the last-resort memory reclaim to disk, with a severe performance hit
  3. C.memory ballooning — a guest driver reclaiming idle guest memory back to the host
  4. D.memory ballooning — TPS → ballooning → compression → swapping
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7. What is Transparent Page Sharing?

Mid
  1. A.a guest driver reclaiming idle guest memory back to the host
  2. B.deduplicating identical memory pages across or within VMs
  3. C.the last-resort memory reclaim to disk, with a severe performance hit
  4. D.TPS → ballooning → compression → swapping
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9. Which statement is correct?

Mid
  1. A.Transparent Page Sharing — a guest driver reclaiming idle guest memory back to the host
  2. B.Transparent Page Sharing — the last-resort memory reclaim to disk, with a severe performance hit
  3. C.Transparent Page Sharing — deduplicating identical memory pages across or within VMs
  4. D.Transparent Page Sharing — TPS → ballooning → compression → swapping
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10. What is hypervisor swapping?

Mid
  1. A.a guest driver reclaiming idle guest memory back to the host
  2. B.the last-resort memory reclaim to disk, with a severe performance hit
  3. C.TPS → ballooning → compression → swapping
  4. D.deduplicating identical memory pages across or within VMs
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12. Which statement is correct?

Mid
  1. A.hypervisor swapping — a guest driver reclaiming idle guest memory back to the host
  2. B.hypervisor swapping — deduplicating identical memory pages across or within VMs
  3. C.hypervisor swapping — the last-resort memory reclaim to disk, with a severe performance hit
  4. D.hypervisor swapping — TPS → ballooning → compression → swapping
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