CAS-004 Security Architecture Practice Question
A company is migrating critical workloads to AWS and must secure data at rest. They need to maintain control over the encryption keys. Which service should they use to meet this requirement?
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 CloudHSM
AWS CloudHSM provides dedicated Hardware Security Modules (HSMs) that allow customers to maintain full control over their encryption keys. Unlike AWS KMS, where AWS manages the underlying hardware, CloudHSM gives customers exclusive ownership and management of keys, meeting the requirement to maintain control over encryption keys.
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 Secrets Manager
Why it's wrong here
Secrets Manager is for managing secrets like database passwords, not for controlling encryption keys for data at rest.
- ✗
AWS Certificate Manager (ACM)
Why it's wrong here
ACM manages SSL/TLS certificates, not encryption keys for data at rest.
- ✓
AWS CloudHSM
Why this is correct
CloudHSM provides dedicated hardware security modules (HSMs) for key generation and storage, giving the customer full control over keys.
- ✗
AWS Shield
Why it's wrong here
Shield is a DDoS protection service.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CAS-005 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 CAS-005 exam.