- A
Enable audit logs on RDS and use Amazon Kinesis Data Firehose to stream logs to Amazon S3. Use Amazon Athena to query the logs.
Why wrong: Enabling audit logs on RDS and using Kinesis Data Firehose to stream to S3 is not a direct integration for MySQL. RDS for MySQL does not natively stream audit logs to Kinesis. This adds unnecessary complexity and is not the best fit.
- B
Configure RDS to publish audit logs to Amazon CloudWatch Logs, then export logs to Amazon S3 using a subscription filter and Lambda. Use Athena to query the logs in S3.
This solution is correct. RDS for MySQL can publish audit logs to CloudWatch Logs. A subscription filter and Lambda function can export those logs to S3. Athena provides a cost-effective, serverless query service for the S3 data, meeting durability, scalability, and cost requirements.
- C
Enable the general query log on RDS and set the log_output to TABLE. Write a scheduled script to copy the log table to Amazon S3.
Why wrong: Setting log_output to TABLE stores logs in a database table on the RDS instance, consuming storage and risking data loss on reboot. A scheduled script to copy to S3 is not real-time and still depends on the instance storage.
- D
Enable audit logs on RDS and stream them to Amazon CloudWatch Logs. Use CloudWatch Logs Insights to query logs.
Why wrong: Streaming audit logs to CloudWatch Logs is feasible, but using CloudWatch Logs Insights for querying can be expensive for large volumes. Long-term storage and ad-hoc querying are better handled by S3 and Athena.
SAP-C02 Design for New Solutions Practice Question
This SAP-C02 practice question tests your understanding of design for new solutions. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 healthcare startup is building a HIPAA-compliant application on AWS. The application uses Amazon RDS for MySQL to store patient data. The compliance team requires that all database changes be audited, including SELECT statements. The current solution enables general query logs on the RDS instance, but the logs are stored locally and are lost when the instance is rebooted. Additionally, the logs are consuming significant storage on the instance. The startup needs a durable, scalable, and cost-effective solution for storing and querying database audit logs. Which solution meets these requirements?
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
Configure RDS to publish audit logs to Amazon CloudWatch Logs, then export logs to Amazon S3 using a subscription filter and Lambda. Use Athena to query the logs in S3.
Option B is the most suitable solution. RDS for MySQL supports publishing audit logs to CloudWatch Logs. From there, you can set up a subscription filter to a Lambda function that exports logs to Amazon S3 for durable storage. Athena can then be used to query the logs cost-effectively. This approach is durable, scalable, and cost-effective, meeting the compliance requirement for auditing changes including SELECT statements. Option A: While Kinesis Data Firehose can stream to S3, enabling audit logs on RDS for MySQL does not directly integrate with Kinesis; this option is more complex and unnecessary. Option C: Storing logs in a table on RDS consumes instance storage and does not provide durable, scalable storage; logs are still lost on reboot. Option D: CloudWatch Logs Insights is not cost-effective for long-term querying of large volumes and does not offer the same query flexibility as Athena on S3.
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.
- ✗
Enable audit logs on RDS and use Amazon Kinesis Data Firehose to stream logs to Amazon S3. Use Amazon Athena to query the logs.
Why it's wrong here
Enabling audit logs on RDS and using Kinesis Data Firehose to stream to S3 is not a direct integration for MySQL. RDS for MySQL does not natively stream audit logs to Kinesis. This adds unnecessary complexity and is not the best fit.
- ✓
Configure RDS to publish audit logs to Amazon CloudWatch Logs, then export logs to Amazon S3 using a subscription filter and Lambda. Use Athena to query the logs in S3.
Why this is correct
This solution is correct. RDS for MySQL can publish audit logs to CloudWatch Logs. A subscription filter and Lambda function can export those logs to S3. Athena provides a cost-effective, serverless query service for the S3 data, meeting durability, scalability, and cost requirements.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable the general query log on RDS and set the log_output to TABLE. Write a scheduled script to copy the log table to Amazon S3.
Why it's wrong here
Setting log_output to TABLE stores logs in a database table on the RDS instance, consuming storage and risking data loss on reboot. A scheduled script to copy to S3 is not real-time and still depends on the instance storage.
- ✗
Enable audit logs on RDS and stream them to Amazon CloudWatch Logs. Use CloudWatch Logs Insights to query logs.
Why it's wrong here
Streaming audit logs to CloudWatch Logs is feasible, but using CloudWatch Logs Insights for querying can be expensive for large volumes. Long-term storage and ad-hoc querying are better handled by S3 and Athena.
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.
Trap categories for this question
Command / output trap
Setting log_output to TABLE stores logs in a database table on the RDS instance, consuming storage and risking data loss on reboot. A scheduled script to copy to S3 is not real-time and still depends on the instance storage.
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 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.
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 |
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this SAP-C02 question test?
Design for New Solutions — This question tests Design for New Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure RDS to publish audit logs to Amazon CloudWatch Logs, then export logs to Amazon S3 using a subscription filter and Lambda. Use Athena to query the logs in S3. — Option B is the most suitable solution. RDS for MySQL supports publishing audit logs to CloudWatch Logs. From there, you can set up a subscription filter to a Lambda function that exports logs to Amazon S3 for durable storage. Athena can then be used to query the logs cost-effectively. This approach is durable, scalable, and cost-effective, meeting the compliance requirement for auditing changes including SELECT statements. Option A: While Kinesis Data Firehose can stream to S3, enabling audit logs on RDS for MySQL does not directly integrate with Kinesis; this option is more complex and unnecessary. Option C: Storing logs in a table on RDS consumes instance storage and does not provide durable, scalable storage; logs are still lost on reboot. Option D: CloudWatch Logs Insights is not cost-effective for long-term querying of large volumes and does not offer the same query flexibility as Athena on S3.
What should I do if I get this SAP-C02 question wrong?
Identify which SAP-C02 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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Last reviewed: Jun 20, 2026
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