- A
AWS X-Ray
Correct for the stated requirement.
- B
AWS Budgets
Why wrong: This does not meet the stated requirement as directly as the correct option.
- C
AWS Artifact
Why wrong: This does not meet the stated requirement as directly as the correct option.
- D
AWS License Manager
Why wrong: This does not meet the stated requirement as directly as the correct option.
Question 487 of 1,616
DVA-C02 Troubleshooting and Optimization Practice Question
This DVA-C02 practice question tests your understanding of troubleshooting and optimization. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 developer needs to trace a request across API Gateway, Lambda, and downstream AWS service calls. Which service should be enabled?
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
✓
AWS X-Ray
AWS X-Ray is the correct service because it provides end-to-end tracing for requests flowing through distributed applications, including API Gateway, Lambda functions, and downstream AWS services like DynamoDB or S3. It captures trace data as the request traverses each component, allowing developers to identify performance bottlenecks and errors across the entire request path. X-Ray integrates natively with API Gateway and Lambda via the X-Ray SDK or active tracing configuration, requiring no code changes for basic tracing.
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.
- ✓
AWS X-Ray
Why this is correct
Correct for the stated requirement.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS Budgets
Why it's wrong here
This does not meet the stated requirement as directly as the correct option.
- ✗
AWS Artifact
Why it's wrong here
This does not meet the stated requirement as directly as the correct option.
- ✗
AWS License Manager
Why it's wrong here
This does not meet the stated requirement as directly as the correct option.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse AWS X-Ray with CloudWatch Logs or CloudTrail, thinking those services provide the same distributed tracing capability, but X-Ray is the only service that correlates trace data across multiple components in a single request.
Detailed technical explanation
How to think about this question
Under the hood, X-Ray uses trace IDs and segment documents to reconstruct the full request path; for Lambda, it automatically sends subsegments for each invocation and downstream SDK calls when the X-Ray SDK is enabled. A subtle behavior is that X-Ray tracing for API Gateway must be explicitly enabled in the API Gateway stage settings, and if the Lambda function uses a custom runtime without the X-Ray SDK, tracing data may be incomplete. In a real-world scenario, a developer debugging a slow checkout flow can use X-Ray to pinpoint whether the delay is in API Gateway latency, a cold start in Lambda, or a throttled DynamoDB query.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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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Troubleshooting and Optimization — study guide chapter
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
Troubleshooting and Optimization — This question tests Troubleshooting and Optimization — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS X-Ray — AWS X-Ray is the correct service because it provides end-to-end tracing for requests flowing through distributed applications, including API Gateway, Lambda functions, and downstream AWS services like DynamoDB or S3. It captures trace data as the request traverses each component, allowing developers to identify performance bottlenecks and errors across the entire request path. X-Ray integrates natively with API Gateway and Lambda via the X-Ray SDK or active tracing configuration, requiring no code changes for basic tracing.
What should I do if I get this DVA-C02 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 11, 2026
This DVA-C02 practice question is part of Courseiva's free Amazon Web Services 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 DVA-C02 exam.
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