CAS-004 Security Engineering Practice Question
An organization wants to implement a hardware root of trust for measuring system integrity at boot. Which technology should be used to store measurements in Platform Configuration Registers (PCRs) and support remote attestation?
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
✓
TPM 2.0
TPM 2.0 provides PCRs for measured boot and supports attestation, making it suitable for hardware root of trust.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
HSM
Why it's wrong here
HSM is for cryptographic key storage and operations, not boot measurements.
- ✗
Secure Enclave
Why it's wrong here
Secure enclave (e.g., Intel SGX) protects code/data in memory, not boot integrity.
- ✓
TPM 2.0
Why this is correct
TPM 2.0 includes PCRs for boot measurements and attestation capabilities.
- ✗
UEFI Secure Boot
Why it's wrong here
UEFI Secure Boot verifies signatures, but does not provide PCR-based measurements or attestation.
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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.