20 Ansible Vault Interview Questions and Answers for DevOps (2026)
Prepare for your Ansible and DevOps interviews with these carefully selected Ansible vault basic to advance MCQs. This set covers core Ansible Vault. Each question includes clear answers and explanations to help you strengthen your understanding and boost interview confidence.
By the end of this article, you’ll be well-equipped to handle a variety of Ansible Vault interview questions and demonstrate your proficiency in automating IT tasks efficiently and effectively.
1. What is the primary purpose of Ansible Vault ?
A) To speed up playbook execution
B) To encrypt sensitive data like passwords and API keys
C) To manage remote server inventory
D) To automate the installation of the Linux kernel
Correct Answer: B
Explanation: Ansible Vault is a feature that keeps confidential information secure by storing it in an encrypted format rather than plain text, preventing it from being exposed in shared files or repositories.
2. Which command is used to create a new encrypted file from scratch ?
A) ansible-vault encrypt
B) ansible-vault new
C) ansible-vault create
D) ansible-vault build
Correct Answer: C
Explanation: The create command prompts you for a password and opens an editor where you can type your content; once saved, the file is automatically encrypted.
3. If you want to modify the contents of an already encrypted file, which command should you use ?
A) ansible-vault update
B) ansible-vault edit
C) ansible-vault decrypt
D) ansible-vault open
Correct Answer: B
Explanation: The edit command temporarily decrypts the file for you to make changes in your text editor and then automatically re-encrypts it when you save and exit.
4. What is the effect of the ansible-vault decrypt command ?
A) It allows you to view the file once
B) It permanently removes the encryption from the file
C) It changes the password of the file
D) It runs a playbook with encrypted variables
Correct Answer: B
Explanation: Unlike “view” or “edit,” the decrypt command turns the file back into a plain text version permanently, meaning it will no longer be protected unless you encrypt it again.
5. How do you run a playbook that requires a vault password to be entered manually ?
A) –vault-password
B) –ask-vault-pass
C) –provide-vault-key
D) –with-vault
Correct Answer: B
Explanation: Adding the –ask-vault-pass flag tells Ansible to stop and prompt the user to type in the password before the playbook starts running.
6. Which tag is added to the start of an encrypted variable to identify it to Ansible ?
A) @encrypted
B) #vault
C) !vault
D) &secret
Correct Answer: C
Explanation: When you encrypt a specific string (variable), Ansible adds the !vault tag at the beginning so it knows that the specific value must be decrypted before it can be used in a task.
7. What command is used to change the password of an existing encrypted file ?
A) ansible-vault reset
B) ansible-vault password-change
C) ansible-vault rekey
D) ansible-vault encrypt
Correct Answer: C
Explanation: The rekey command allows you to rotate your security keys by asking for the current password and then setting a new one for the file.
8. Which environment variable can be used to point to a file containing the vault password ?
A) VAULT_FILE_PATH
B) ANSIBLE_PASSWORD
C) ANSIBLE_VAULT_PASSWORD_FILE
D) VAULT_SECRET_KEY
Correct Answer: C
Explanation: By setting this environment variable, you can automate your workflows because Ansible will automatically look at that file for the password instead of asking you to type it.
9. What is a “Vault ID” used for in complex environments ?
A) To identify the user who encrypted the file
B) To assign different passwords to different groups or environments
C) To track the version of the encryption algorithm
D) To name the managed node
Correct Answer: B
Explanation: Vault IDs allow you to use multiple passwords within the same project (e.g., one for “dev” and one for “prod”), making it easier to manage permissions across different teams.
10. Which module can you use to view the plaintext value of a vaulted variable during debugging ?
A) ansible.builtin.shell
B) ansible.builtin.debug
C) ansible.builtin.copy
D) ansible.builtin.vault_view
Correct Answer: B
Explanation: The debug module, when combined with the correct vault password, can print the decrypted value of a variable to your console so you can verify its contents.
11. What is a major disadvantage of encrypting an entire YAML file compared to just a specific variable ?
A) It is less secure
B) It reduces readability of the file for humans
C) It cannot be stored in Git
D) It makes the file larger
Correct Answer: B
Explanation: If the whole file is encrypted, you cannot see any of the key names or structure without decrypting it first, which makes it harder to understand what the file is for at a glance.
12. To prevent sensitive decrypted values from appearing in the Ansible log output, which task option should be used ?
A) ignore_errors: yes
B) sensitive: true
C) no_log: true
D) hidden: yes
Correct Answer: C
Explanation: Even if a file is encrypted on your computer, the values might show up in clear text in logs when a task runs; no_log: true hides that output from the console.
13. Which command allows you to see the contents of an encrypted file without permanently decrypting it ?
A) ansible-vault cat
B) ansible-vault show
C) ansible-vault view
D) ansible-vault read
Correct Answer: C
Explanation: The view command decrypts the file in memory and shows it on your screen, but the file on your hard drive stays safely encrypted.
14. Where is the best practice location to store vault passwords ?
A) Inside the GitHub repository
B) In a public text file
C) In a secure external secret store or a restricted local file
D) Hardcoded in the playbook
Correct Answer: C
Explanation: To keep your secrets safe, passwords should never be committed to version control systems like Git; instead, use a password manager or a local file with strict permissions.
15. What does a “vault password client script” do ?
A) It encrypts your playbooks automatically
B) It fetches the vault password from an external source (like HashiCorp Vault)
C) It checks the syntax of your encrypted files
D) It sends the password to managed nodes
Correct Answer: B
Explanation: These scripts allow Ansible to communicate with professional secret management tools to grab the password dynamically, making the process more secure and scalable.
16. Which command allows you to encrypt an existing plain text file ?
A) ansible-vault hide
B) ansible-vault encrypt
C) ansible-vault create
D) ansible-vault lock
Correct Answer: B
Explanation: While create is for new files, the encrypt command is used to take a file that already exists and secure it with a password.
17. What type of data does Ansible Vault primarily protect ?
A) Data in motion (network traffic)
B) Data at rest (stored on disk)
C) RAM during execution
D) Real-time console output
Correct Answer: B
Explanation: Ansible Vault focuses on securing files while they are sitting on your computer or in a repository, though users must still be careful not to leak the data during execution.
18. How do you reference an encrypted variable file in a playbook ?
A) encrypt_files:
B) vars_files:
C) vault_source:
D) include_secrets:
Correct Answer: B
Explanation: You include vaulted files just like any other variable file using the vars_files directive; Ansible will automatically attempt to decrypt it using the provided password.
19. What header is added to a file once it has been encrypted by Ansible Vault ?
A) — !secret
B) $ANSIBLE_VAULT;1.1;AES256
C) ### ENCRYPTED ###
D) VAULT_LOCKED_FILE
Correct Answer: B
Explanation: This header tells Ansible that the file is a vault, which version of the vault format was used, and the type of encryption algorithm (AES256) applied.
20. According to the sources, why might a team use a “Vault ID” for every password ?
A) To identify which user last edited the file
B) To manage different access levels for different teams
C) To bypass the need for a password file
D) To increase the speed of decryption
Correct Answer: B
Explanation: Using unique Vault IDs allows large organizations to give specific teams (like Database vs. Web) access only to the secrets relevant to their specific roles.
