- A
Create IAM roles in each account to allow the central bucket to read logs.
Why wrong: The central bucket does not need to read logs; it receives writes.
- B
Create a bucket policy on the central S3 bucket that grants permissions to the source accounts.
The bucket policy must allow the source accounts to write logs.
- C
Enable CloudTrail organization trail in the management account to deliver logs to the central bucket.
Why wrong: Organization trail automatically delivers logs from all accounts to a single bucket without additional configuration for each account.
- D
Set up a cross-account subscription in CloudWatch Logs to forward logs to the central account.
Why wrong: This is for CloudWatch Logs, not S3 delivery.
- E
Configure each account’s services (e.g., CloudTrail, VPC Flow Logs) to deliver logs to the central S3 bucket.
Each account must be configured to send logs to the central bucket.
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 DevOps engineer is setting up centralized logging for a multi-account environment using AWS Organizations. The engineer needs to aggregate logs from all accounts into a single Amazon S3 bucket. Which TWO steps are necessary?
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 a bucket policy on the central S3 bucket that grants permissions to the source accounts.
Option B is correct because a bucket policy on the central S3 bucket can grant cross-account permissions to source accounts to write logs. This allows services like CloudTrail and VPC Flow Logs from member accounts to deliver logs directly to the central bucket without requiring IAM roles in each account for reading logs.
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 IAM roles in each account to allow the central bucket to read logs.
Why it's wrong here
The central bucket does not need to read logs; it receives writes.
- ✓
Create a bucket policy on the central S3 bucket that grants permissions to the source accounts.
Why this is correct
The bucket policy must allow the source accounts to write logs.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable CloudTrail organization trail in the management account to deliver logs to the central bucket.
Why it's wrong here
Organization trail automatically delivers logs from all accounts to a single bucket without additional configuration for each account.
- ✗
Set up a cross-account subscription in CloudWatch Logs to forward logs to the central account.
Why it's wrong here
This is for CloudWatch Logs, not S3 delivery.
- ✓
Configure each account’s services (e.g., CloudTrail, VPC Flow Logs) to deliver logs to the central S3 bucket.
Why this is correct
Each account must be configured to send logs to the central bucket.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the need for IAM roles in each account (Option A) with the correct bucket policy approach, or they assume that enabling an organization trail (Option C) is mandatory when the question allows for individual account configuration.
Detailed technical explanation
How to think about this question
The bucket policy must grant the `s3:PutObject` permission to the source accounts' service principals (e.g., `cloudtrail.amazonaws.com` or `vpc-flow-logs.amazonaws.com`) with a condition that restricts access to the source account IDs. This ensures that logs from each account are written to the correct prefix in the bucket, enabling centralized log management without requiring IAM roles or cross-account subscriptions.
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 a bucket policy on the central S3 bucket that grants permissions to the source accounts. — Option B is correct because a bucket policy on the central S3 bucket can grant cross-account permissions to source accounts to write logs. This allows services like CloudTrail and VPC Flow Logs from member accounts to deliver logs directly to the central bucket without requiring IAM roles in each account for reading logs.
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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