DEA-C01 Data Security and Governance Practice Question
A company needs to centralize audit logs from multiple AWS accounts into a single S3 bucket. Which service should be used to aggregate these logs?
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
✓
AWS CloudTrail
AWS CloudTrail can be configured to deliver logs from multiple accounts to a single S3 bucket using a trail in the management account. Option C is correct.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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AWS Config
Why it's wrong here
AWS Config records resource configuration changes and compliance state; it does not capture CloudTrail management events or deliver them to a central S3 bucket. It is the correct choice for assessing resource configuration drift, not for aggregating audit logs across accounts.
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Amazon Kinesis Data Firehose
Why it's wrong here
Firehose delivers streaming records to S3, but it does not natively collect CloudTrail audit events across accounts; you would have to build and maintain the ingestion pipeline yourself. It is the right choice for streaming application or clickstream data into S3, not for aggregating audit logs.
- ✓
AWS CloudTrail
Why this is correct
AWS CloudTrail delivers account activity events across all accounts to one centralised S3 bucket, satisfying the multi-account aggregation requirement. Its organisation trail captures management and data events from every member account, writing them to a single destination bucket, which is precisely the centralised audit-log consolidation the stem demands.
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Amazon CloudWatch Logs
Why it's wrong here
CloudWatch Logs stores log groups per account and region, so cross-account centralisation into one S3 bucket requires custom subscription filters and assumes roles rather than working natively. It suits querying and alarming on application logs within an account, not multi-account audit aggregation.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.