VA-003 Compare and configure secrets engines Practice Question
An organization wants to encrypt data in transit and at rest using a centralized key management system. Which secrets engine is designed for encryption/decryption operations without storing data?
⚠ Common exam trap
HashiCorp often tests the distinction between storing data (KV) and encrypting data (Transit), where candidates mistakenly choose KV because they associate 'encryption at rest' with storage, but Transit is the correct engine for performing encryption operations without storing the data.
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
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Transit secrets engine
The Transit secrets engine performs encryption/decryption operations on data in transit without storing the data itself. It is designed for centralized key management, allowing applications to send plaintext for encryption or ciphertext for decryption via API calls, while the keys remain securely managed within Vault. This makes it ideal for encrypting data in transit and at rest without persisting the data.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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KV secrets engine
Why it's wrong here
The KV secrets engine stores and versions static secrets such as passwords and API keys; it offers no encryption-as-a-service API. It is tempting because it is the default centralised secret store, but the transit secrets engine is designed for encrypt/decrypt operations without persisting the data.
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PKI secrets engine
Why it's wrong here
The PKI secrets engine issues and revokes X.509 certificates; it cannot perform arbitrary encrypt/decrypt operations. It is tempting because it centralises cryptographic material, but the transit secrets engine is the one providing encryption as a service without persisting the plaintext or ciphertext.
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Database secrets engine
Why it's wrong here
The database secrets engine dynamically generates short-lived database credentials; it performs no cryptographic operations. It is tempting because it centralises secrets for data stores, but the requirement is encryption and decryption without storing data, which only the transit secrets engine delivers.
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Transit secrets engine
Why this is correct
The transit secrets engine performs cryptographic operations on data supplied by clients, returning ciphertext without persisting it, satisfying the requirement for encryption in transit and at rest via centralized key management. Keys remain inside Vault, so applications never handle raw key material directly.
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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.