ANS-C01 Network Management and Operations Practice Question
A company uses AWS Transit Gateway to connect multiple VPCs and on-premises networks. The network team wants to monitor the amount of data transferred between VPCs for cost allocation. Which AWS feature should they use?
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 for each VPC.
VPC Flow Logs can be published to CloudWatch Logs or S3 and provide network traffic logs that include source/destination IP, ports, and byte counts, which can be used for cost allocation. Option A is wrong because CloudWatch Metrics for Transit Gateway only show aggregate metrics like bytes in/out per attachment, not per-flow. Option C is wrong because AWS Config records resource configuration changes, not traffic. Option D is wrong because CloudTrail records API calls.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
CloudWatch Metrics for Transit Gateway.
Why it's wrong here
Metrics show aggregate data, not per-flow byte counts.
- ✓
VPC Flow Logs for each VPC.
Why this is correct
Flow Logs capture individual flow data including byte counts.
- ✗
AWS Config rules.
Why it's wrong here
Config tracks configuration changes, not traffic.
- ✗
AWS CloudTrail logs.
Why it's wrong here
CloudTrail records API calls, not 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 |
Go deeper
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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.