This DVA-C02 practice question tests your understanding of development with aws services. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 company runs a microservices architecture on Amazon ECS with Fargate. The application experiences intermittent high latency. The operations team wants to trace requests across services and identify bottlenecks. Which AWS service should be used?
VPC Flow Logs
Why wrong: Captures network traffic, not application traces.
Amazon CloudWatch Logs
Why wrong: Logs alone do not trace requests across services.
AWS X-Ray
Designed for tracing and analyzing distributed applications.
Amazon CloudWatch Metrics
Why wrong: Metrics are aggregated and do not trace individual requests.
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
Option B is correct because AWS X-Ray provides end-to-end tracing for distributed applications. Option A is wrong because CloudWatch Logs only collects logs, not traces. Option C is wrong because CloudWatch Metrics provides aggregated metrics but not request-level traces. Option D is wrong because VPC Flow Logs capture network metadata but not application-level 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.
VPC Flow Logs
Why it's wrong here
Captures network traffic, not application traces.
Amazon CloudWatch Logs
Why it's wrong here
Logs alone do not trace requests across services.
AWS X-Ray
Why this is correct
Designed for tracing and analyzing distributed applications.
Related concept
Read the scenario before looking for a memorised answer.
Amazon CloudWatch Metrics
Why it's wrong here
Metrics are aggregated and do not trace individual requests.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Identify which DVA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Development with AWS Services — This question tests Development with AWS Services — Read the scenario before looking for a memorised answer..
The correct answer is: AWS X-Ray — Option B is correct because AWS X-Ray provides end-to-end tracing for distributed applications. Option A is wrong because CloudWatch Logs only collects logs, not traces. Option C is wrong because CloudWatch Metrics provides aggregated metrics but not request-level traces. Option D is wrong because VPC Flow Logs capture network metadata but not application-level tracing.
Identify which DVA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 20, 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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