ANS-C01 Network Implementation Practice Question
A network engineer needs to monitor network traffic in a VPC. Which TWO AWS services can capture and analyze VPC flow logs?
⚠ Common exam trap
AWS often tests the misconception that VPC Traffic Mirroring is a type of flow log, but it is a separate feature for capturing full packet payloads, not the aggregated metadata logs that VPC Flow Logs provide.
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 S3
Amazon S3 is a correct destination for VPC Flow Logs because you can publish flow log data directly to an S3 bucket, where it can be stored, queried with Amazon Athena, or processed by other analytics tools. Amazon CloudWatch Logs is also a correct destination, allowing you to publish flow logs to a log group for real-time monitoring, metric filters, and integration with CloudWatch alarms or third-party solutions via subscription filters.
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 GuardDuty
Why it's wrong here
GuardDuty uses flow logs for threat detection but does not capture them.
- ✓
Amazon S3
Why this is correct
Flow logs can be delivered to S3.
- ✗
VPC Traffic Mirroring
Why it's wrong here
Traffic Mirroring copies traffic, not flow logs.
- ✓
Amazon CloudWatch Logs
Why this is correct
Flow logs can be sent to CloudWatch Logs.
- ✗
AWS Config
Why it's wrong here
AWS Config audits resource configurations.
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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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.