Quick Answer
AWS X-Ray is the correct choice because it provides end-to-end distributed tracing across API Gateway, Lambda, and downstream AWS service calls, capturing trace data as requests traverse each component. This works by instrumenting the request path with a trace ID that follows the request from the API Gateway entry point through Lambda execution and into services like DynamoDB or S3, allowing developers to pinpoint latency and errors at each hop. On the AWS Certified Developer Associate DVA-C02 exam, this question tests your understanding of how X-Ray integrates natively with these services—often without code changes—by simply enabling active tracing in the API Gateway stage and Lambda function configuration. A common trap is confusing X-Ray with CloudWatch Logs or CloudTrail, but remember: X-Ray is for tracing request flow, not just logging or auditing. Memory tip: think “X marks the spot” for tracing the full request path.
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?
AWS X-Ray
Correct for the stated requirement.
AWS Budgets
Why wrong: This does not meet the stated requirement as directly as the correct option.
AWS Artifact
Why wrong: This does not meet the stated requirement as directly as the correct option.
AWS License Manager
Why wrong: This does not meet the stated requirement as directly as the correct option.
Answer choices
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
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
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
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.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
What to study next
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FAQ
Troubleshooting and Optimization — This question tests Troubleshooting and Optimization — Read the scenario before looking for a memorised answer..
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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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