- A
Amazon CloudWatch Logs Insights
Why wrong: CloudWatch Logs Insights operates on CloudWatch Logs, not S3.
- B
Amazon QuickSight
Why wrong: QuickSight visualizes but requires a data source.
- C
Amazon Athena
Athena can query WAF logs in S3 using SQL.
- D
AWS WAF console
Why wrong: The console shows metrics but not detailed querying.
Question 1,603 of 1,748
SCS-C02 Security Logging and Monitoring Practice Question
This SCS-C02 practice question tests your understanding of security logging and monitoring. 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 uses AWS WAF to protect a web application. The security team needs to analyze blocked requests to identify attack patterns. Which service should be used to query and visualize WAF 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
✓
Amazon Athena
Amazon Athena is the correct service because it allows you to query AWS WAF logs stored in Amazon S3 directly using standard SQL. WAF logs are not natively indexed for real-time querying like CloudWatch Logs, but Athena's serverless query engine can efficiently analyze large volumes of these logs for attack pattern identification. Combined with Amazon QuickSight for visualization, Athena provides a cost-effective and scalable solution for ad-hoc log analysis.
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.
- ✗
Amazon CloudWatch Logs Insights
Why it's wrong here
CloudWatch Logs Insights operates on CloudWatch Logs, not S3.
- ✗
Amazon QuickSight
Why it's wrong here
QuickSight visualizes but requires a data source.
- ✓
Amazon Athena
Why this is correct
Athena can query WAF logs in S3 using SQL.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS WAF console
Why it's wrong here
The console shows metrics but not detailed querying.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume CloudWatch Logs Insights is the default query tool for all AWS logs, but AWS WAF logs are specifically designed to be stored in S3 and queried via Athena, not ingested into CloudWatch Logs natively.
Trap categories for this question
Command / output trap
The console shows metrics but not detailed querying.
Detailed technical explanation
How to think about this question
AWS WAF logs are delivered to an S3 bucket in JSON format, partitioned by date and time. Athena uses a table schema defined in the AWS Glue Data Catalog to parse these logs, enabling SQL queries like SELECT httpRequest.clientIp, COUNT(*) as requests FROM waf_logs WHERE action='BLOCK' GROUP BY httpRequest.clientIp. This approach is particularly useful for identifying distributed attack patterns, such as credential stuffing or SQL injection attempts, that span multiple log entries and require aggregation.
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 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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Security Logging and Monitoring — study guide chapter
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FAQ
Questions learners often ask
What does this SCS-C02 question test?
Security Logging and Monitoring — This question tests Security Logging and Monitoring — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Amazon Athena — Amazon Athena is the correct service because it allows you to query AWS WAF logs stored in Amazon S3 directly using standard SQL. WAF logs are not natively indexed for real-time querying like CloudWatch Logs, but Athena's serverless query engine can efficiently analyze large volumes of these logs for attack pattern identification. Combined with Amazon QuickSight for visualization, Athena provides a cost-effective and scalable solution for ad-hoc log analysis.
What should I do if I get this SCS-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.
About these practice questions
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Last reviewed: Jul 4, 2026
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