The answer is S3 server access logs, as they are the correct AWS service to audit S3 with server access logs for both object-level operations like GetObject and PutObject and bucket-level operations such as ListBucket. These logs provide detailed records of every request made to a bucket, capturing the action, requester, and response status, which makes them ideal for compliance auditing. On the AWS Certified Data Engineer Associate DEA-C01 exam, this question tests your ability to distinguish between S3 server access logs and CloudTrail, a common trap where candidates assume CloudTrail logs all S3 operations by default—but CloudTrail management events only cover bucket-level actions, and object-level logging requires explicitly enabling data events. Remember that S3 server access logs are a bucket-level feature you enable directly on the bucket, while CloudTrail is a separate service for API activity monitoring. A helpful memory tip: think of server access logs as the bucket’s own diary, recording every knock on the door, whereas CloudTrail is the security camera watching the building’s entrance.
DEA-C01 Data Security and Governance Practice Question
This DEA-C01 practice question tests your understanding of data security and governance. 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 data engineer needs to audit all access to an S3 bucket for compliance. They want to capture object-level operations such as GetObject and PutObject, as well as bucket-level operations like ListBucket. Which AWS service should be used?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
S3 server access logs
S3 server access logs record object-level and bucket-level operations. CloudTrail can also record S3 API calls, but by default it logs bucket-level operations only; object-level logging requires enabling data events. Option A is wrong because CloudTrail management events do not include object-level operations. Option C is wrong because CloudWatch Logs alone does not capture S3 access. Option D is wrong because Config records resource configuration changes, not API calls.
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.
✗
Amazon CloudWatch Logs
Why it's wrong here
CloudWatch Logs does not directly capture S3 API calls; it can be used to store logs from other sources.
✓
S3 server access logs
Why this is correct
S3 server access logs provide detailed records about requests made to a bucket, including object-level and bucket-level operations.
Related concept
Read the scenario before looking for a memorised answer.
✗
AWS CloudTrail management events
Why it's wrong here
Management events do not include object-level operations like GetObject.
✗
AWS Config
Why it's wrong here
AWS Config records resource configuration changes, not API calls.
Common exam traps
Common exam trap: answer the scenario, not the keyword
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
How to think about this question
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.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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.
What to study next
Got this wrong? Here's your next step.
Identify which DEA-C01 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.
Data Security and Governance — This question tests Data Security and Governance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: S3 server access logs — S3 server access logs record object-level and bucket-level operations. CloudTrail can also record S3 API calls, but by default it logs bucket-level operations only; object-level logging requires enabling data events. Option A is wrong because CloudTrail management events do not include object-level operations. Option C is wrong because CloudWatch Logs alone does not capture S3 access. Option D is wrong because Config records resource configuration changes, not API calls.
What should I do if I get this DEA-C01 question wrong?
Identify which DEA-C01 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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A data engineer needs to audit all access to an S3 bucket containing sensitive customer data. The engineer must record the requester, timestamp, action, and whether the access was denied. Which AWS solution meets these requirements?
medium
A.Use AWS Config to record S3 bucket-level configuration changes.
B.Enable VPC Flow Logs for the VPC where the bucket resides.
C.Enable AWS CloudTrail Data Events for the S3 bucket.
✓ D.Enable S3 server access logs for the bucket, storing them in a different bucket.
Why D: Option C is correct because S3 server access logs capture detailed records of requests made to a bucket, including requester, timestamp, action, and response status. Option A is wrong because CloudTrail logs object-level events only if Data Events are enabled, but server access logs are specifically designed for this purpose and are more granular. Option B is wrong because VPC Flow Logs capture network traffic metadata but not application-level S3 operations. Option D is wrong because AWS Config tracks resource configuration changes, not access requests.
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This DEA-C01 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 DEA-C01 exam.
Question Discussion
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