CV0-004 Security Practice Question
An organization's compliance policy requires that all access to cloud resources be logged and that logs be immutable. Which service should be used to meet these requirements?
⚠ Common exam trap
CompTIA Cloud+ often tests the distinction between logging API calls (CloudTrail) and monitoring resource configurations (Config) or operational logs (CloudWatch Logs), leading candidates to confuse CloudWatch Logs as the logging service without considering immutability requirements.
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
✓
AWS CloudTrail
AWS CloudTrail is the correct service because it records all API calls made to AWS resources, providing a detailed audit log of who made the request, from which IP address, and when. CloudTrail logs can be stored in an S3 bucket with S3 Object Lock enabled, which enforces a write-once-read-many (WORM) model to make logs immutable, meeting the compliance requirement for both logging and immutability.
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 CloudWatch Logs
Why it's wrong here
CloudWatch Logs can store logs but immutability is not inherent.
- ✓
AWS CloudTrail
Why this is correct
CloudTrail records API calls and can store logs immutably.
- ✗
AWS Trusted Advisor
Why it's wrong here
Trusted Advisor provides best practice recommendations, not logging.
- ✗
AWS Config
Why it's wrong here
Config tracks resource configuration changes, not API calls.
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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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.