Question 764 of 1,570
SCS-C02 Security Logging and Monitoring Practice Question
A security engineer needs to capture all network traffic between EC2 instances in a VPC for forensic analysis. Which TWO services should be used together? (Choose TWO.)
⚠ Common exam trap
It's easy for candidates to confuse VPC Flow Logs (network metadata) with AWS CloudTrail (API activity) or GuardDuty (threat detection), failing to recognize that forensic analysis of raw traffic requires both a capture mechanism and a query engine like Athena.
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 VPC Flow Logs
Amazon VPC Flow Logs capture IP traffic information for network interfaces in a VPC, including metadata such as source/destination IPs, ports, protocols, and packet accept/reject decisions. To perform forensic analysis on this raw flow log data, you can use Amazon Athena to query the logs directly from S3 using standard SQL, enabling efficient filtering and pattern detection across large volumes of network traffic.
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 VPC Flow Logs
Why this is correct
Captures network traffic metadata.
- ✗
AWS CloudTrail
Why it's wrong here
Logs API calls, not network traffic.
- ✗
AWS Config
Why it's wrong here
Records configuration changes.
- ✓
Amazon Athena
Why this is correct
Can query VPC Flow Logs stored in S3.
- ✗
Amazon GuardDuty
Why it's wrong here
Detects threats, does not capture traffic.
Visual reference
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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Last reviewed: Jun 11, 2026
This SCS-C02 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 SCS-C02 exam.
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