Quick Answer
The answer is Amazon Athena, AWS CloudTrail, and S3 server access logs. CloudTrail captures API-level calls like GetObject, while S3 server access logs provide granular details such as the requester’s IAM user, source IP address, and object key; Athena then enables efficient SQL-based querying across both log sources to correlate who accessed what and from where. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this scenario tests your understanding of logging and forensic analysis—a common trap is confusing AWS Config (which tracks resource configuration, not data access) or VPC Flow Logs (which monitor network traffic but lack object-level context) with actual access logs. To investigate S3 data exfiltration using AWS services, remember that CloudTrail gives the “who” and “when,” S3 logs give the “what” and “where,” and Athena ties it all together. Memory tip: “CloudTrail for calls, S3 logs for details, Athena for queries—three tools, one investigation.”
This DOP-C02 practice question tests your understanding of incident and event response. 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 security team is investigating a potential data exfiltration from an S3 bucket. They need to identify which IAM user accessed a specific object and whether the access was from a known IP address. Which THREE AWS services or features should they use together to conduct this investigation?
AWS Config
Why wrong: Records resource configuration, not data access.
VPC Flow Logs
Why wrong: Capture network traffic but not S3 object access.
AWS CloudTrail
Logs all S3 API calls including GetObject.
S3 server access logs
Provide detailed object-level access logs.
Amazon Athena
Can query logs stored in S3 for analysis.
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 CloudTrail
Options A, B, and D are correct. A is correct because AWS CloudTrail logs S3 API calls including GetObject. B is correct because S3 server access logs provide detailed object-level access logs including requester, IP, and object key. D is correct because Amazon Athena can query both CloudTrail logs and S3 access logs efficiently. Option C is wrong because AWS Config records resource configuration, not data access. Option E is wrong because VPC Flow Logs capture network traffic but not S3 object-level access.
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 Config
Why it's wrong here
Records resource configuration, not data access.
VPC Flow Logs
Why it's wrong here
Capture network traffic but not S3 object access.
AWS CloudTrail
Why this is correct
Logs all S3 API calls including GetObject.
Related concept
Read the scenario before looking for a memorised answer.
S3 server access logs
Why this is correct
Provide detailed object-level access logs.
Related concept
Read the scenario before looking for a memorised answer.
Amazon Athena
Why this is correct
Can query logs stored in S3 for analysis.
Related concept
Read the scenario before looking for a memorised answer.
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 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
Identify which DOP-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.
Incident and Event Response — study guide chapter
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FAQ
Incident and Event Response — This question tests Incident and Event Response — Read the scenario before looking for a memorised answer..
The correct answer is: AWS CloudTrail — Options A, B, and D are correct. A is correct because AWS CloudTrail logs S3 API calls including GetObject. B is correct because S3 server access logs provide detailed object-level access logs including requester, IP, and object key. D is correct because Amazon Athena can query both CloudTrail logs and S3 access logs efficiently. Option C is wrong because AWS Config records resource configuration, not data access. Option E is wrong because VPC Flow Logs capture network traffic but not S3 object-level access.
Identify which DOP-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 DOP-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 DOP-C02 exam.
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