CAS-004 Security Engineering Practice Question
An organization uses a TPM 2.0 for measured boot and attestation. Which TPM feature ensures that the boot process has not been tampered with by measuring each component before it executes?
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
✓
Platform Configuration Registers (PCRs)
Platform Configuration Registers (PCRs) store hash measurements of boot components. Any change in the boot sequence will result in different PCR values, alerting to tampering.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Platform Configuration Registers (PCRs)
Why this is correct
PCRs store measurements that can be used for attestation.
- ✗
Endorsement Key (EK)
Why it's wrong here
EK is a unique identity key.
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Secure boot
Why it's wrong here
Secure boot verifies signatures, measured boot records measurements.
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Sealed storage
Why it's wrong here
Sealed storage encrypts data bound to TPM state.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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