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CAS-004 Practice Question: Wants to implement a hardware security module…
An organization wants to implement a hardware security module (HSM) to protect cryptographic keys. Which of the following is a primary benefit of using an HSM?
⚠ Common exam trap
Watch out — candidates often confuse the security benefit of tamper-resistant storage with performance improvements like faster key generation or reduced latency, which are not primary HSM advantages and are often worse than software alternatives.
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
✓
Tamper-resistant key storage
An HSM provides tamper-resistant key storage by using physical and logical safeguards, such as tamper switches, epoxy potting, and zeroization circuits, that destroy cryptographic keys if an attacker attempts to access the hardware. This ensures that private keys remain secure even if the device is compromised, which is a primary requirement for compliance with standards like FIPS 140-2 Level 3 or 4. Software-based storage cannot offer the same level of physical protection against extraction attacks.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Faster key generation than software
Why it's wrong here
HSMs are not necessarily faster; they provide security, not performance.
- ✗
Reduced network latency for encryption
Why it's wrong here
HSMs may add latency; they do not reduce network traffic.
- ✗
Automatic cloud backup of keys
Why it's wrong here
HSMs can be cloud-based but do not automatically backup keys; backup is a separate process.
- ✓
Tamper-resistant key storage
Why this is correct
HSMs are designed to protect keys from physical and logical attacks.
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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.