- A
Create a cross-account subscription in Amazon CloudWatch Logs to stream logs to the central account.
Why wrong: This is an alternative for CloudWatch Logs, not required for S3.
- B
Create an S3 bucket in the central account with appropriate bucket policy granting permissions to CloudTrail.
The central bucket needs a policy allowing CloudTrail to write logs from other accounts.
- C
Enable CloudTrail in each region where the company operates.
CloudTrail must be enabled per region to capture all activity.
- D
Enable AWS CloudTrail in each account and configure it to deliver logs to the central S3 bucket.
Each account's CloudTrail must point to the central bucket.
- E
Turn on CloudTrail data events for all S3 and Lambda resources.
Why wrong: Data events are optional; management events are sufficient for compliance.
DOP-C02 Monitoring and Logging Practice Question
This DOP-C02 practice question tests your understanding of monitoring and logging. 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 wants to centralize logging from multiple AWS accounts and regions. The logs should be stored in a central S3 bucket for compliance. Which THREE steps are required to achieve this? (Choose THREE.)
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Create an S3 bucket in the central account with appropriate bucket policy granting permissions to CloudTrail.
Option B is correct because to centralize logs from multiple accounts into a single S3 bucket, the bucket in the central account must have a bucket policy that explicitly grants the necessary permissions (e.g., `s3:PutObject`) to the CloudTrail service principal (`cloudtrail.amazonaws.com`) from each source account. This policy allows CloudTrail in the source accounts to write log files directly into the central bucket, enabling centralized storage for compliance.
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 cross-account subscription in Amazon CloudWatch Logs to stream logs to the central account.
Why it's wrong here
This is an alternative for CloudWatch Logs, not required for S3.
- ✓
Create an S3 bucket in the central account with appropriate bucket policy granting permissions to CloudTrail.
Why this is correct
The central bucket needs a policy allowing CloudTrail to write logs from other accounts.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Enable CloudTrail in each region where the company operates.
Why this is correct
CloudTrail must be enabled per region to capture all activity.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Enable AWS CloudTrail in each account and configure it to deliver logs to the central S3 bucket.
Why this is correct
Each account's CloudTrail must point to the central bucket.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Turn on CloudTrail data events for all S3 and Lambda resources.
Why it's wrong here
Data events are optional; management events are sufficient for compliance.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the need for a cross-account CloudWatch Logs subscription (Option A) with the direct S3 delivery mechanism of CloudTrail, or they mistakenly think enabling data events (Option E) is mandatory for centralization, when only management events and proper S3 bucket policy configuration are required.
Detailed technical explanation
How to think about this question
Under the hood, CloudTrail uses a service-linked role and the `cloudtrail.amazonaws.com` service principal to write logs to S3. The bucket policy must include a condition like `aws:SourceArn` to restrict access to specific CloudTrail trails, preventing unauthorized writes. In real-world scenarios, failing to include the `aws:SourceArn` condition can lead to a confused deputy problem, where a malicious account could write logs to your bucket if the policy is too permissive.
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.
TExam Day Tips
- 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Monitoring and Logging — study guide chapter
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FAQ
Questions learners often ask
What does this DOP-C02 question test?
Monitoring and Logging — This question tests Monitoring and Logging — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create an S3 bucket in the central account with appropriate bucket policy granting permissions to CloudTrail. — Option B is correct because to centralize logs from multiple accounts into a single S3 bucket, the bucket in the central account must have a bucket policy that explicitly grants the necessary permissions (e.g., `s3:PutObject`) to the CloudTrail service principal (`cloudtrail.amazonaws.com`) from each source account. This policy allows CloudTrail in the source accounts to write log files directly into the central bucket, enabling centralized storage for compliance.
What should I do if I get this DOP-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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