The correct answer is to enable CloudTrail data events for S3 buckets to capture object-level API operations. CloudTrail logs management events by default, but data events—such as GetObject, PutObject, and DeleteObject—require explicit activation, and S3 server access logs alone may miss certain cross-account access attempts due to configuration gaps or delayed delivery. On the AWS Certified Advanced Networking Specialty ANS-C01 exam, this concept tests your understanding of the distinction between management and data event logging, a common trap where candidates assume S3 server access logs are sufficient for all cross-account scenarios. Remember that CloudTrail data events are the only way to capture real-time, API-level object access across accounts, while server access logs are best-effort and not guaranteed for every request. A useful memory tip: “Data events for object-level, management events for bucket-level”—if you need to log who accessed a specific object from another account, you must turn on data events.
ANS-C01 Network Security, Compliance and Governance Practice Question
This ANS-C01 practice question tests your understanding of network security, compliance 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.
An organization has a requirement that all cross-account access to Amazon S3 buckets must be logged and monitored. The security team has enabled AWS CloudTrail and S3 server access logs. However, they notice that some cross-account access attempts are not being logged. Which additional step should be taken to ensure all cross-account access is logged?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable CloudTrail data events for S3 buckets to capture object-level API operations.
Option C is correct because CloudTrail logs management events by default, but not data events. S3 server access logs capture object-level operations but require proper configuration. Option A is wrong because CloudWatch Logs is for log storage, not for enabling logging. Option B is wrong because enabling default encryption does not affect logging. Option D is wrong because S3 Object Lock is for compliance, not logging.
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.
✗
Create a CloudWatch Logs subscription filter to capture all S3 access logs.
Why it's wrong here
Subscription filters process logs but do not enable logging of cross-account access.
✗
Enable default encryption on all S3 buckets.
Why it's wrong here
Encryption does not affect logging.
✓
Enable CloudTrail data events for S3 buckets to capture object-level API operations.
Why this is correct
CloudTrail data events log object-level operations such as GetObject, PutObject, which are used in cross-account access.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable S3 Object Lock on all buckets to prevent deletion of logs.
Why it's wrong here
Object Lock prevents deletion but does not enable logging.
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 ANS-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.
Network Security, Compliance and Governance — This question tests Network Security, Compliance and Governance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable CloudTrail data events for S3 buckets to capture object-level API operations. — Option C is correct because CloudTrail logs management events by default, but not data events. S3 server access logs capture object-level operations but require proper configuration. Option A is wrong because CloudWatch Logs is for log storage, not for enabling logging. Option B is wrong because enabling default encryption does not affect logging. Option D is wrong because S3 Object Lock is for compliance, not logging.
What should I do if I get this ANS-C01 question wrong?
Identify which ANS-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.
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This ANS-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 ANS-C01 exam.
Question Discussion
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