CV0-004 Operations and Support Practice Question
A cloud application is experiencing intermittent high latency. The operations team has enabled distributed tracing using AWS X-Ray but is unable to pinpoint the source. Which additional step should the team take to identify the root cause of the latency?
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
✓
Analyze traces in X-Ray to identify which service segment has the highest duration.
Distributed tracing (like X-Ray) provides end-to-end visibility of requests. To pinpoint the source of latency, the team should analyze trace data to identify which service or segment is taking the most time. Enabling VPC Flow Logs, application logs, or scaling out would not directly identify the latency source within the application.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable VPC Flow Logs to analyze network traffic patterns.
Why it's wrong here
Flow logs show network traffic but not application-level latency.
- ✗
Increase the auto-scaling group size to handle the load.
Why it's wrong here
Scaling out may reduce latency but does not identify the root cause.
- ✓
Analyze traces in X-Ray to identify which service segment has the highest duration.
Why this is correct
Traces show timing of each service call; high duration segments indicate the source of latency.
- ✗
Examine application logs on each virtual machine.
Why it's wrong here
Logs may show errors but are less effective than distributed tracing for latency pinpointing.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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