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Interview question · Systems, OS & Memory Safety

What do Secure Boot, measured boot and a TPM each prove, and how is that used for device trust or confidential workloads?

Secure Boot refuses to run unsigned code; measured boot records what did run; a TPM lets someone else check that record. Candidates who blur the three cannot reason about attestation at all.

mediumEssentialNewPreparation tags: Microsoft, Google, AppleUpdated Nov 2026

Secure Boot refuses to run unsigned code; measured boot records what did run; a TPM lets someone else check that record. Candidates who blur the three cannot reason about attestation at all.

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What would you say before reading the answer?

  1. 01 State the assumptions your answer depends on.
  2. 02 Explain the mechanism and choose a control.
  3. 03 Name a condition that would change your decision.

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What if · the follow-ups in this answer

The answer works through 6 follow-ups like an interviewer would

A company wants laptops whose disks cannot be read if stolen and that report tampering with the boot process.

  1. What does Secure Boot do?
  2. What does measured boot do?
  3. How do disks stay unreadable if stolen?
  4. How is tampering reported?
  5. What are the practical concerns?
  6. What would you deploy?

Each rung has a nudge, a model answer, the principle that carries over and the weak answer to avoid. Premium opens every answer and ladder.

UP NEXT ON YOUR JOURNEY
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