EX294 Manage inventories and credentials Practice Question
This EX294 practice question tests your understanding of manage inventories and credentials. 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.
Refer to the exhibit. A playbook includes this vars file and runs `systemctl restart httpd`. The playbook fails because it cannot decrypt the vault. Which of the following is the most likely cause?
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 password is not provided.
The error 'cannot decrypt the vault' indicates that Ansible is unable to decrypt the vault-encrypted variable file. This occurs when the vault password is not provided via `--ask-vault-pass`, `--vault-password-file`, or the `ANSIBLE_VAULT_PASSWORD_FILE` environment variable. Without the correct password, Ansible cannot decrypt the vault, causing the playbook to fail.
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 vault ID is missing.
Why it's wrong here
A missing vault ID uses default; not the cause of decryption failure.
✗
The variable db_password is not used in the playbook.
Why it's wrong here
Even if unused, Ansible attempts to decrypt all vault variables when reading the file.
✓
The vault password is not provided.
Why this is correct
Without a vault password, decryption fails.
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 file is corrupted.
Why it's wrong here
The file appears properly formatted and not corrupted.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Red Hat often tests the distinction between vault ID (which is optional) and vault password (which is mandatory), leading candidates to incorrectly select 'vault ID is missing' when the actual issue is the missing password.
Detailed technical explanation
How to think about this question
Ansible vault uses AES-256 encryption in CBC mode with a PBKDF2-derived key. The vault password is required at runtime to derive the decryption key; if not provided, Ansible raises an error before any task execution. In real-world scenarios, this often happens when a playbook is run in a CI/CD pipeline without the vault password file mounted or when the `--ask-vault-pass` flag is omitted in an interactive session.
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 inventories and credentials — This question tests Manage inventories and credentials — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The vault password is not provided. — The error 'cannot decrypt the vault' indicates that Ansible is unable to decrypt the vault-encrypted variable file. This occurs when the vault password is not provided via `--ask-vault-pass`, `--vault-password-file`, or the `ANSIBLE_VAULT_PASSWORD_FILE` environment variable. Without the correct password, Ansible cannot decrypt the vault, causing the playbook to fail.
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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