VA-003 Explain Vault architecture Practice Question
An organization requires that all Vault secrets be encrypted with a key derived from a hardware security module (HSM) and that the cluster can be unsealed automatically. Which seal type should they use?
⚠ Common exam trap
HashiCorp often tests the distinction between 'auto-unseal' and 'HSM-backed key derivation'; the trap here is that candidates may confuse Cloud KMS seal (which also provides auto-unseal) with HSM-based sealing, but Cloud KMS does not use a dedicated hardware security module for key derivation.
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
✓
PKCS11 seal
The PKCS11 seal type is correct because it enables Vault to derive the unseal key from a key stored in a hardware security module (HSM) via the PKCS#11 interface. This allows automatic unsealing of the cluster by leveraging the HSM's key, meeting both the encryption and auto-unseal requirements.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
PKCS11 seal
Why this is correct
PKCS11 seal supports HSM integration for automatic unsealing and key management.
- ✗
Transit seal
Why it's wrong here
Transit seal uses another Vault instance for encryption, not an HSM.
- ✗
Shamir seal
Why it's wrong here
Shamir seal requires operator intervention to unseal and does not integrate with HSMs.
- ✗
Cloud KMS seal
Why it's wrong here
Cloud KMS seal uses a cloud provider's key management service, not a local HSM.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This VA-003 practice question is part of Courseiva's free HashiCorp 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 VA-003 exam.