ANS-C01 Network Security, Compliance and Governance Practice Question
A company needs to log all network traffic to and from EC2 instances for security analysis. Which TWO services can capture this data? (Choose 2)
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
✓
VPC Flow Logs
Options B and D are correct. VPC Flow Logs capture metadata (IP addresses, ports, protocols) about network traffic. Traffic Mirroring captures actual packet content for deep packet inspection. Option A (AWS Config) is incorrect because it records configuration changes, not network traffic. Option C (AWS CloudTrail) is incorrect because it logs API calls, not network traffic. Option E (Amazon CloudWatch Logs) is incorrect because it is for log storage and monitoring, not for capturing 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.
- ✗
AWS Config
Why it's wrong here
AWS Config records configuration changes and compliance, not network traffic.
- ✓
VPC Flow Logs
Why this is correct
VPC Flow Logs capture metadata about network traffic.
- ✗
AWS CloudTrail
Why it's wrong here
AWS CloudTrail logs API calls, not network traffic.
- ✓
Traffic Mirroring
Why this is correct
Traffic Mirroring captures actual packet content for analysis.
- ✗
Amazon CloudWatch Logs
Why it's wrong here
Amazon CloudWatch Logs is for log storage and monitoring, not capturing network traffic.
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 ANS-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 ANS-C01 exam.