The answer is to enable AWS CloudTrail with data events for the S3 bucket. This is correct because CloudTrail captures detailed API activity, recording the caller identity, source IP address, and the specific actions performed on the bucket, which directly meets the audit requirement for granular access tracking. On the AWS Certified Data Engineer Associate DEA-C01 exam, this question tests your ability to distinguish between logging services: a common trap is confusing S3 server access logs with CloudTrail data events, but remember that server access logs are object-level and lack centralized IAM identity details, while CloudTrail provides a unified audit trail across all AWS services. The exam often pairs this with scenarios requiring compliance or security auditing, so focus on the need for caller identity and IP capture. A helpful memory tip is "Data events for who, server logs for what"—CloudTrail data events tell you who did it and from where, while server access logs only show the request details without the user identity.
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 Amazon S3 bucket containing sensitive data. The audit must capture who accessed the bucket, from which IP address, and what actions were performed. Which AWS service should be enabled?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable AWS CloudTrail with data events for the S3 bucket.
Option B is correct because AWS CloudTrail logs all API calls to S3, including the caller identity, source IP, and actions. Option A is wrong because S3 server access logs provide similar info but are not as detailed or centralized. Option C is wrong because CloudWatch Logs can store logs but does not generate them. Option D is wrong because AWS Config tracks 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.
✗
Enable S3 server access logging for the bucket.
Why it's wrong here
Server access logs record requests but are not as comprehensive for auditing.
✓
Enable AWS CloudTrail with data events for the S3 bucket.
Why this is correct
CloudTrail data events capture detailed API activity.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use AWS Config to record S3 bucket-level changes.
Why it's wrong here
Config records configuration changes, not access requests.
✗
Configure Amazon CloudWatch Logs to monitor S3 access.
Why it's wrong here
CloudWatch Logs stores logs but doesn't generate them.
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: Enable AWS CloudTrail with data events for the S3 bucket. — Option B is correct because AWS CloudTrail logs all API calls to S3, including the caller identity, source IP, and actions. Option A is wrong because S3 server access logs provide similar info but are not as detailed or centralized. Option C is wrong because CloudWatch Logs can store logs but does not generate them. Option D is wrong because AWS Config tracks 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 data access events in Amazon S3. Which AWS service should be used to record and monitor API calls for S3 buckets?
easy
✓ A.AWS CloudTrail
B.AWS Config
C.Amazon Macie
D.Amazon GuardDuty
Why A: Option D is correct because AWS CloudTrail records API calls for auditing. Option A is wrong because Amazon GuardDuty is a threat detection service. Option B is wrong because AWS Config tracks resource configuration changes. Option C is wrong because Amazon Macie discovers sensitive data.
Variation 2. A company wants to audit all data access events in their S3 buckets, including who accessed objects and from which IP address. Which AWS service should be used to capture these events?
easy
✓ A.AWS CloudTrail with data events enabled
B.Amazon CloudWatch Logs
C.AWS Config
D.Amazon S3 Server Access Logs
Why A: Option C is correct because AWS CloudTrail can log S3 API calls including GetObject, PutObject, etc. Option A is wrong because S3 Server Access Logs provide object-level logs but do not include IAM user details. Option B is wrong because CloudWatch Logs can store logs but not capture them directly. Option D is wrong because Config records resource configuration changes, not data access.
Variation 3. An organization needs to audit all access to their S3 buckets for compliance purposes. They want to log both successful and failed API calls. Which AWS service should be used?
medium
A.Amazon CloudWatch Logs
B.AWS Config
✓ C.AWS CloudTrail
D.VPC Flow Logs
Why C: Option C is correct because AWS CloudTrail logs API activity in an AWS account, including S3 operations. Option A (Amazon CloudWatch) monitors metrics, not API calls. Option B (AWS Config) tracks resource configuration changes, not API calls. Option D (VPC Flow Logs) captures network traffic, not API calls.
Last reviewed: Jun 20, 2026
Question Discussion
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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.
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