CV0-004 Operations and Support Practice Question
A cloud administrator wants to troubleshoot network connectivity issues between two VPCs. Which AWS feature provides detailed logs of IP traffic for analysis?
⚠ Common exam trap
CV0-004 often tests the confusion between CloudTrail (API auditing) and VPC Flow Logs (network traffic), causing candidates to pick CloudTrail when the question asks about IP traffic analysis.
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
VPC Flow Logs capture IP traffic metadata (source/destination IP, ports, protocol, action) for network interfaces in a VPC, and can be published to CloudWatch Logs or S3 for analysis. This is the specific AWS feature designed for troubleshooting connectivity and analyzing traffic patterns at the network layer.
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 CloudTrail
Why it's wrong here
CloudTrail records AWS API activity — who called which action — not IP traffic between VPCs. It is tempting because it is the primary auditing and troubleshooting log service, but packet-level connectivity analysis requires VPC Flow Logs, which capture source, destination, port and accept/reject status per flow.
- ✗
VPC Route Tables
Why it's wrong here
Route tables define where traffic is directed, but they do not record IP traffic; they only show configured routes. It is tempting because misconfigured routes are a common cause of VPC connectivity failures, yet diagnosing them requires VPC Flow Logs, which capture actual accepted and rejected traffic records.
- ✗
AWS CloudWatch Logs
Why it's wrong here
CloudWatch Logs stores application and resource logs such as Lambda output or custom metrics, not packet-level IP traffic between VPCs. It is tempting because it is the default log destination in AWS, but VPC Flow Logs is the feature that captures accepted and rejected IP traffic metadata for the elastic network interfaces.
- ✓
VPC Flow Logs
Why this is correct
VPC Flow Logs capture accepted and rejected IP traffic metadata for elastic network interfaces, subnets or VPCs, including source, destination, port and action. Publishing them to CloudWatch Logs or S3 satisfies the troubleshooting requirement, since the records reveal whether traffic between the two VPCs is reaching its destination.
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
Related to this question
About these practice questions
One of 834 original CV0-004 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
This CV0-004 practice question is part of Courseiva's free CompTIA 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 CV0-004 exam.