CV0-004 Security Practice Question
A security team is implementing encryption for a cloud-based database. The compliance requirements mandate that encryption keys be managed by the customer and rotated every 90 days. Which THREE of the following should the team use? (Select THREE).
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
✓
Integrate with the cloud KMS using customer-managed keys
Encryption at rest with AES-256, a cloud KMS with customer-managed keys, and automated key rotation meet the requirements. TLS secures data in transit but is not about key management.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Store the encryption key in a configuration file
Why it's wrong here
Storing keys in configuration files is insecure and violates best practices.
- ✗
Use TLS 1.2+ for data in transit
Why it's wrong here
TLS secures data in transit, not key management or rotation.
- ✓
Integrate with the cloud KMS using customer-managed keys
Why this is correct
Customer-managed keys give the customer control over key rotation.
- ✓
Enable encryption at rest using AES-256
Why this is correct
AES-256 is a strong encryption standard for data at rest.
- ✓
Configure automatic key rotation every 90 days
Why this is correct
Automated rotation ensures compliance with the 90-day requirement.
Quick reference
Symmetric Encryption Algorithm Comparison
| Algorithm | Key Size | Block Size | Status | Notes |
|---|---|---|---|---|
| AES-128 | 128-bit | 128-bit | Current standard | NIST approved; WPA3, TLS |
| AES-256 | 256-bit | 128-bit | Current standard | Preferred for sensitive / govt data |
| 3DES | 112-bit effective | 64-bit | Deprecated (2023) | Replaced by AES |
| DES | 56-bit | 64-bit | Broken | Cracked in < 24 h; never deploy |
| ChaCha20 | 256-bit | Stream cipher | Current | TLS 1.3, WireGuard |
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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.