CAS-004 Security Engineering Practice Question
A security analyst is configuring a TPM 2.0 for a new fleet of laptops. The requirement is to ensure that only authorized operating systems can boot and that any tampering with the boot process is detected. Which TPM feature should be used?
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
✓
Measured boot with attestation
Measured boot records measurements of boot components in PCRs, and attestation allows a remote verifier to check these measurements. Secure boot only verifies signatures, not measurements. Sealed storage ties data to PCR values. Key attestation is for 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.
- ✗
Secure boot
Why it's wrong here
Secure boot only verifies digital signatures of boot components, not measurements.
- ✓
Measured boot with attestation
Why this is correct
Measured boot records boot measurements in PCRs; attestation allows verification of those measurements.
- ✗
Sealed storage
Why it's wrong here
Sealed storage protects data but does not measure boot.
- ✗
Key attestation
Why it's wrong here
Key attestation proves that a key was generated in a TPM, not boot integrity.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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