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350-401 Practice Question: Which three statements about virtual machine (VM)…
Which three statements about virtual machine (VM) resource allocation and overcommitment are true? (Choose three.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Memory overcommitment allows the sum of all virtual machine memory allocations to exceed the physical RAM of the host.
Memory overcommitment allows more total vRAM than physical RAM. CPU overcommitment is common and can be managed. Overcommitment can cause performance issues if resources are oversubscribed. Storage is not typically overcommitted in the same manner as CPU/memory.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Memory overcommitment allows the sum of all virtual machine memory allocations to exceed the physical RAM of the host.
Why this is correct
Correct because hypervisors can use techniques like ballooning to overcommit memory.
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CPU overcommitment is achieved by scheduling virtual CPUs onto physical cores, often with a ratio greater than 1:1.
Why this is correct
Correct because hypervisors can time-share physical cores among multiple vCPUs.
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Overcommitment always guarantees better performance for all virtual machines.
Why it's wrong here
Incorrect because overcommitment can lead to resource contention and degraded performance.
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Storage overcommitment is supported by thin provisioning, where virtual disks consume only the space actually used.
Why this is correct
Correct because thin provisioning allows storage to be overcommitted, but it is a different mechanism than CPU/memory overcommitment.
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A hypervisor cannot overcommit CPU resources because each vCPU must be pinned to a dedicated physical core.
Why it's wrong here
Incorrect because hypervisors commonly overcommit CPUs; pinning is optional and not required.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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