EX294 Manage automation security and operations Practice Question
This EX294 practice question tests your understanding of manage automation security and operations. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
After rotating the Ansible Vault password in the automation controller, several job templates that use vault credentials start failing with 'decryption failed'. The vault credential has been updated with the new password. What is the most likely cause of the failure?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The vault file in the project repository still uses the old vault password and needs to be re-encrypted with the new password.
Option B is correct because the vault file itself is encrypted with a specific password. When the vault password is rotated in the automation controller, the vault file stored in the project repository is still encrypted with the old password. The job template uses the vault credential to decrypt the file, but since the credential now holds the new password, decryption fails. The vault file must be re-encrypted with the new password using `ansible-vault rekey` or by decrypting and re-encrypting it.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
The automation controller needs a restart to apply the new vault credential.
Why it's wrong here
No restart is required for credential updates.
✓
The vault file in the project repository still uses the old vault password and needs to be re-encrypted with the new password.
Why this is correct
Vault files must be rekeyed when the password changes.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The vault credential is not linked to the job template correctly.
Why it's wrong here
The credential is linked; otherwise jobs would not attempt decryption.
✗
The vault credential type requires the old password to be stored separately.
Why it's wrong here
No such requirement.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume updating the vault credential in the controller is sufficient, but they overlook that the vault file itself must be re-encrypted with the new password.
Detailed technical explanation
How to think about this question
Ansible Vault uses symmetric encryption (AES-256) with a single password. When a vault file is created with `ansible-vault encrypt`, the password is used to derive the encryption key. Rotating the password in the automation controller updates the credential object, but the vault file remains encrypted with the old key. The `ansible-vault rekey` command must be run to change the file's encryption password without decrypting and re-encrypting the entire file. In a real-world CI/CD pipeline, this often happens when vault passwords are rotated for compliance, and the vault files in the repository are not updated accordingly.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the EX294 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Manage automation security and operations — This question tests Manage automation security and operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The vault file in the project repository still uses the old vault password and needs to be re-encrypted with the new password. — Option B is correct because the vault file itself is encrypted with a specific password. When the vault password is rotated in the automation controller, the vault file stored in the project repository is still encrypted with the old password. The job template uses the vault credential to decrypt the file, but since the credential now holds the new password, decryption fails. The vault file must be re-encrypted with the new password using `ansible-vault rekey` or by decrypting and re-encrypting it.
What should I do if I get this EX294 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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