Question 6 of 510

Scripting, Containers and Automation →mediumMultiple ChoiceObjective-mapped

Quick Answer

The answer is to use Ansible Vault to encrypt the secret variables and restrict access to the vault password file. This is correct because Ansible Vault provides symmetric encryption for sensitive data like API keys and passwords, ensuring they remain encrypted at rest within playbooks and are only decrypted in memory during execution, preventing exposure in logs or version control. On the CompTIA SecurityX CAS-004 exam, this scenario tests your understanding of securing automation workflows in shared environments, often appearing as a trap where candidates choose environment variables—which can be logged—or plaintext, which is clearly insecure. A common memory tip is to think of the vault as a locked safe: the playbook is the building, but the secrets are inside the safe, accessible only with the correct key file. Remember: if it’s sensitive, vault it; if it’s shared, restrict the key.

CAS-004 Scripting, Containers and Automation Practice Question

This CAS-004 practice question tests your understanding of scripting, containers and automation. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.

An organization uses Ansible to automate server configuration for a hybrid cloud environment. The security team requires that sensitive data such as API keys and passwords are not exposed in the Ansible playbooks or logs. The Ansible control node is shared among several administrators. What is the best approach to protect these secrets?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.

Question 1mediummultiple choice

Read the full Ansible explanation →

A
Store secrets in plaintext in a separate file and set restrictive file permissions.
Why wrong: Plaintext files can be read by any user with access; permissions alone do not prevent exposure in logs.
B
Remove all secrets from automation and require manual entry during each playbook run.
Why wrong: Manual entry defeats automation and increases the risk of credential exposure through human error.
C
Use Ansible Vault to encrypt the secret variables and restrict access to the vault password file.
Ansible Vault encrypts data at rest; only authorized users with the vault password can decrypt.
D
Define secrets as environment variables on the control node and reference them in playbooks.
Why wrong: Environment variables can be leaked through debugging output or logs and are not encrypted at rest.

Full breakdown with real-world context →

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

✓

Use Ansible Vault to encrypt the secret variables and restrict access to the vault password file.

Ansible Vault encrypts sensitive data within playbooks. Option A is correct. Plaintext (B) is insecure. Environment variables (C) can be logged. Removing secrets (D) is impractical.

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.

✗
Store secrets in plaintext in a separate file and set restrictive file permissions.
Why it's wrong here
Plaintext files can be read by any user with access; permissions alone do not prevent exposure in logs.
✗
Remove all secrets from automation and require manual entry during each playbook run.
Why it's wrong here
Manual entry defeats automation and increases the risk of credential exposure through human error.
✓
Use Ansible Vault to encrypt the secret variables and restrict access to the vault password file.
Why this is correct
Ansible Vault encrypts data at rest; only authorized users with the vault password can decrypt.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Define secrets as environment variables on the control node and reference them in playbooks.
Why it's wrong here
Environment variables can be leaked through debugging output or logs and are not encrypted at rest.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Trap categories for this question

Command / output trap
Environment variables can be leaked through debugging output or logs and are not encrypted at rest.

Detailed technical explanation

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

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.
Use explanations to understand the rule behind the answer.

TExam Day Tips

Underline the problem statement mentally.
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 CAS-004 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 CAS-004 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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FAQ

Questions learners often ask

What does this CAS-004 question test?

Scripting, Containers and Automation — This question tests Scripting, Containers and Automation — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Use Ansible Vault to encrypt the secret variables and restrict access to the vault password file. — Ansible Vault encrypts sensitive data within playbooks. Option A is correct. Plaintext (B) is insecure. Environment variables (C) can be logged. Removing secrets (D) is impractical.

What should I do if I get this CAS-004 question wrong?

Are there clue words in this question I should notice?

Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

About these practice questions

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Same concept, more angles

1 more ways this is tested on CAS-004

These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.

Variation 1. A DevOps team uses Ansible to automate server configuration. They need to ensure that sensitive variables like passwords are not exposed in playbook logs or version control. What is the recommended approach?

medium

✓ A.Use Ansible Vault to encrypt sensitive variables
B.Use environment variables only
C.Store secrets in plain text within the playbook
D.Encrypt the entire playbook file

Why A: Ansible Vault encrypts sensitive data, preventing exposure. Storing in plain text is insecure, environment variables can leak in logs, and encrypting the whole playbook is unnecessary and hampers readability.

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Question Discussion

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