Question 1hardmultiple choice
Study the full virtualization explanation →- A
19
38 remaining vCPUs / 2 per VM = 19.
- B
23
Why wrong: Incorrect calculation.
- C
17
Why wrong: Incorrect calculation.
- D
21
Why wrong: Incorrect calculation.
Question 397 of 500
Quick Answer
The answer is 19 additional VMs. This is correct because the UCS domain has 8 blades with 16 cores each, totaling 128 physical cores, and with a 1:1 CPU oversubscription ratio, the hypervisor can allocate exactly 128 vCPUs. Since each VM requires 2 vCPUs, the maximum possible VMs is 64, and at 70% CPU utilization, 89.6 vCPUs are already consumed (roughly 45 VMs), leaving 38.4 vCPUs available, which supports 19 more VMs when dividing by 2. On the Cisco DCCOR 350-601 exam, this type of UCS CPU oversubscription capacity planning question tests your ability to apply oversubscription ratios to real-world VDI workloads, often with a trap where candidates forget to convert physical cores to vCPUs using the given ratio. A quick memory tip: always multiply physical cores by the oversubscription ratio first, then divide by vCPUs per VM, and remember to subtract the current usage before calculating the remainder.
350-601 Compute Practice Question
This 350-601 practice question tests your understanding of compute. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
During a capacity planning review, an engineer notices that a UCS domain with 8 blades (each with 16 cores) is using 70% CPU average. The environment runs VDI workloads. Each VM requires 2 vCPUs and 4 GB RAM. The hypervisor uses 1:1 CPU oversubscription. How many additional VMs can be deployed before reaching 100% CPU utilization?
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
✓
19
The UCS domain has 8 blades × 16 cores = 128 cores. With 1:1 CPU oversubscription, the hypervisor can allocate 128 vCPUs. Each VM requires 2 vCPUs, so the maximum VMs are 128 / 2 = 64. Currently at 70% CPU, 0.70 × 128 = 89.6 vCPUs are used, meaning 89.6 / 2 = 44.8 VMs (round to 45 VMs). The remaining vCPUs are 128 - 89.6 = 38.4, allowing 38.4 / 2 = 19.2 additional VMs, so 19 VMs can be deployed before hitting 100% CPU utilization.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
19
Why this is correct
38 remaining vCPUs / 2 per VM = 19.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
23
Why it's wrong here
Incorrect calculation.
- ✗
17
Why it's wrong here
Incorrect calculation.
- ✗
21
Why it's wrong here
Incorrect calculation.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the trap of confusing CPU utilization percentage with the number of vCPUs already allocated, leading candidates to incorrectly calculate remaining capacity by applying the percentage to the total VM count rather than to the total vCPU count.
Detailed technical explanation
How to think about this question
In UCS Manager, CPU oversubscription is configured per service profile or via hypervisor settings; 1:1 means each vCPU maps to a physical core without overcommitment. For VDI workloads, CPU utilization is often the bottleneck, and the calculation must consider hypervisor overhead (typically 5-10%), though this question ignores it for simplicity. Real-world deployments would also account for memory constraints (4 GB per VM × 64 VMs = 256 GB, which may exceed blade memory limits).
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the 350-601 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Compute — study guide chapter
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FAQ
Questions learners often ask
What does this 350-601 question test?
Compute — This question tests Compute — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: 19 — The UCS domain has 8 blades × 16 cores = 128 cores. With 1:1 CPU oversubscription, the hypervisor can allocate 128 vCPUs. Each VM requires 2 vCPUs, so the maximum VMs are 128 / 2 = 64. Currently at 70% CPU, 0.70 × 128 = 89.6 vCPUs are used, meaning 89.6 / 2 = 44.8 VMs (round to 45 VMs). The remaining vCPUs are 128 - 89.6 = 38.4, allowing 38.4 / 2 = 19.2 additional VMs, so 19 VMs can be deployed before hitting 100% CPU utilization.
What should I do if I get this 350-601 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
This 350-601 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 350-601 exam.
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