This CV0-004 practice question tests your understanding of operations and support. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
A cloud administrator is troubleshooting a performance issue in a virtualized environment. Which TWO metrics should be monitored to identify CPU contention on the hypervisor?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
CPU ready time
CPU ready time (B) measures the time a virtual machine is ready to execute but must wait for the hypervisor to schedule it on a physical core. High ready time directly indicates CPU contention, as the VM is being starved of CPU cycles. CPU co-stopping time (E) occurs when multiple vCPUs in a single VM must wait to be scheduled simultaneously, which also signals CPU overcommitment and contention on the hypervisor.
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.
✗
Swap rate
Why it's wrong here
Swap rate is a memory metric, not a CPU contention metric.
✓
CPU ready time
Why this is correct
CPU ready time is a direct indicator of CPU contention, as it measures the time a vCPU is waiting for physical CPU resources.
Related concept
Read the scenario before looking for a memorised answer.
✗
Memory ballooning
Why it's wrong here
Memory ballooning is related to memory overcommitment, not CPU contention.
✗
CPU utilization per core
Why it's wrong here
CPU utilization shows usage but does not directly indicate contention; high utilization can occur without contention.
✓
CPU co-stopping time
Why this is correct
CPU co-stopping time measures the time correlated vCPUs are waiting for each other, indicating contention.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse CPU utilization per core (which shows how busy the CPU is) with CPU ready time (which shows how long VMs are waiting), but high utilization alone does not prove contention—only ready and co-stop times directly measure scheduling delays.
Trap categories for this question
Command / output trap
CPU utilization shows usage but does not directly indicate contention; high utilization can occur without contention.
Detailed technical explanation
How to think about this question
In VMware vSphere, CPU ready time is reported as a percentage (e.g., %RDY) and should ideally stay below 5% per VM; values above 10-20% indicate severe contention. CPU co-stopping time is specific to SMP VMs with multiple vCPUs, where the hypervisor must schedule all vCPUs simultaneously (coscheduling), and delays cause co-stop time to accumulate. Both metrics are visible in esxtop (CPU world view) or vCenter performance charts, and they help differentiate between genuine CPU saturation and scheduling bottlenecks.
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 CV0-004 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.
Operations and Support — This question tests Operations and Support — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: CPU ready time — CPU ready time (B) measures the time a virtual machine is ready to execute but must wait for the hypervisor to schedule it on a physical core. High ready time directly indicates CPU contention, as the VM is being starved of CPU cycles. CPU co-stopping time (E) occurs when multiple vCPUs in a single VM must wait to be scheduled simultaneously, which also signals CPU overcommitment and contention on the hypervisor.
What should I do if I get this CV0-004 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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Question Discussion
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