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CV0-004 Practice Question: A cloud operations team is analyzing a security…
A cloud operations team is analyzing a security incident in which an unauthorized user accessed a storage bucket. The bucket was configured with public access. Which three best practices should the team implement to prevent such incidents in the future? (Select THREE).
⚠ Common exam trap
CompTIA Cloud+ exams often test the distinction between detective controls (logging, monitoring) and preventive controls (policies, IAM), and candidates mistakenly choose encryption or versioning as access control mechanisms when they serve different security objectives.
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
✓
Enable access logging and monitor logs.
Enabling access logging (e.g., AWS S3 server access logs or Azure Storage analytics logs) allows the team to record all requests made to the bucket, including the requester, IP address, and action. Monitoring these logs with a SIEM or log analysis tool helps detect unauthorized access attempts early, providing forensic evidence and enabling proactive threat response. This is a critical detective control for security incidents.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Enable access logging and monitor logs.
Why this is correct
Correct. Logging provides visibility into access patterns and aids in detecting anomalies.
- ✗
Enable encryption on the storage bucket.
Why it's wrong here
Encryption protects data at rest but does not prevent unauthorized access.
- ✓
Implement least privilege access policies.
Why this is correct
Correct. Least privilege ensures users have only the permissions they need, reducing exposure.
- ✗
Enable versioning on the bucket.
Why it's wrong here
Versioning helps recover from data loss but does not prevent unauthorized access.
- ✓
Use bucket policies to deny all public access.
Why this is correct
Correct. Explicitly denying public access prevents unintended exposure.
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 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.