This CV0-004 practice question tests your understanding of troubleshooting. 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 engineer is troubleshooting a performance issue where a web server cluster experiences high latency during peak hours. The cluster uses an auto-scaling group behind a load balancer. Which THREE steps should the engineer take to identify the root cause?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Monitor CPU and memory utilization on the web servers
Option A is correct because high CPU or memory utilization on web servers directly indicates resource contention, which can cause increased request processing time and latency. Monitoring these metrics helps identify if the auto-scaling group is under-provisioned or if a specific instance is overloaded, guiding scaling policy adjustments.
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.
✓
Monitor CPU and memory utilization on the web servers
Why this is correct
High resource usage can cause slow responses.
Related concept
Read the scenario before looking for a memorised answer.
✓
Analyze web server access logs for slow requests
Why this is correct
Logs can pinpoint which requests are slow and why.
Related concept
Read the scenario before looking for a memorised answer.
✓
Check the load balancer's backend instance health status
Why this is correct
Unhealthy instances can cause failed requests and retries.
Related concept
Read the scenario before looking for a memorised answer.
✗
Reduce the number of instances in the auto-scaling group
Why it's wrong here
Reducing instances would increase load on remaining servers, worsening latency.
✗
Review security group rules for the load balancer
Why it's wrong here
Security groups control access but do not directly cause latency.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think reducing instances (Option D) is a valid troubleshooting step, but it is a remediation action that can mask the root cause and potentially crash the application under load.
Detailed technical explanation
How to think about this question
Under the hood, high latency during peak hours often stems from CPU steal time in virtualized environments or memory pressure causing swap thrashing. Analyzing access logs (Option B) can reveal slow SQL queries or API calls, while load balancer health checks (Option C) ensure traffic isn't routed to unhealthy instances that might be degrading performance due to resource exhaustion.
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.
Troubleshooting — This question tests Troubleshooting — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Monitor CPU and memory utilization on the web servers — Option A is correct because high CPU or memory utilization on web servers directly indicates resource contention, which can cause increased request processing time and latency. Monitoring these metrics helps identify if the auto-scaling group is under-provisioned or if a specific instance is overloaded, guiding scaling policy adjustments.
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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