This DBS-C01 practice question tests your understanding of database security. 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 database administrator needs to audit all SQL statements executed on an Amazon RDS for Oracle DB instance. The audit logs must be stored in Amazon S3 for long-term retention and analysis with Amazon Athena. Which solution meets these requirements?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure Oracle's unified auditing and stream audit logs to CloudWatch Logs, then export to S3.
Option D is correct because Oracle's unified auditing can be configured to write logs to S3 via the database activity stream, which integrates with CloudWatch Logs and then to S3. Option A is wrong because RDS Enhanced Monitoring provides OS metrics, not SQL audit. Option B is wrong because CloudTrail does not capture SQL statements. Option C is wrong because enabling detailed billing does not provide SQL audit.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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 Enhanced Monitoring on the RDS instance and publish logs to CloudWatch Logs.
Why it's wrong here
Enhanced Monitoring provides OS metrics, not SQL audit.
✓
Configure Oracle's unified auditing and stream audit logs to CloudWatch Logs, then export to S3.
Why this is correct
Unified auditing captures SQL statements and can be streamed to S3.
Related concept
Standard ACLs match source addresses.
✗
Enable AWS CloudTrail to capture RDS API calls and store them in S3.
Why it's wrong here
CloudTrail captures API calls, not SQL statements.
✗
Enable detailed billing reports and configure them to include database queries.
Why it's wrong here
Billing reports do not include SQL audit.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
Standard ACLs match source addresses.
Extended ACLs can match source, destination, protocol and ports.
The first matching ACL entry is used.
There is usually an implicit deny at the end.
TExam Day Tips
→Check inbound versus outbound direction.
→Read the ACL from top to bottom.
→Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
Got this wrong? Here's your next step.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related DBS-C01 ACL questions on filtering logic and placement.
Database Security — This question tests Database Security — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Configure Oracle's unified auditing and stream audit logs to CloudWatch Logs, then export to S3. — Option D is correct because Oracle's unified auditing can be configured to write logs to S3 via the database activity stream, which integrates with CloudWatch Logs and then to S3. Option A is wrong because RDS Enhanced Monitoring provides OS metrics, not SQL audit. Option B is wrong because CloudTrail does not capture SQL statements. Option C is wrong because enabling detailed billing does not provide SQL audit.
What should I do if I get this DBS-C01 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related DBS-C01 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Question Discussion
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