The answer is Ansible playbooks, because Ansible is an agentless, push-based configuration management tool that uses SSH to enforce consistent Linux server configurations without requiring any software installed on the managed nodes. This directly meets the organization’s need for minimal agent installation and push-based communication, as Ansible connects via SSH, pushes the desired state defined in YAML playbooks, and idempotently applies changes. On the CompTIA SecurityX CAS-004 exam, this question tests your understanding of automation trade-offs: Ansible’s agentless push model contrasts with Puppet’s pull-based agent architecture, Docker’s container focus, and PowerShell DSC’s Windows-centric design. A common trap is confusing push vs. pull—remember that Ansible pushes from a control node, while Puppet agents pull from a master. Memory tip: “Ansible pushes via SSH, no agent needed—just SSH keys and YAML.”
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 needs to ensure consistent configuration across multiple Linux servers. They want to automate this process with a solution that requires minimal agent installation and uses push-based communication. Which approach is most appropriate?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Ansible playbooks to define and enforce server configurations.
Ansible is agentless and push-based via SSH. Option A is correct. Option B (Puppet) is pull-based and requires agents. Option C (Docker) is for containers, not direct server config. Option D (PowerShell DSC) works well in Windows but is less common for Linux.
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.
✗
Use PowerShell Desired State Configuration (DSC) with Linux extensions.
Why it's wrong here
PowerShell DSC is primarily for Windows and requires significant setup for Linux.
✓
Use Ansible playbooks to define and enforce server configurations.
Why this is correct
Ansible is agentless, uses SSH for push, and is widely used for configuration management.
Related concept
Read the scenario before looking for a memorised answer.
✗
Run a Docker container on each server with a configuration management tool inside.
Why it's wrong here
This adds overhead and does not directly manage host OS configuration.
✗
Deploy Puppet with a master server and agents on each system.
Why it's wrong here
Puppet requires agents and is pull-based, conflicting with the requirement for push-based communication.
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.
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.
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 playbooks to define and enforce server configurations. — Ansible is agentless and push-based via SSH. Option A is correct. Option B (Puppet) is pull-based and requires agents. Option C (Docker) is for containers, not direct server config. Option D (PowerShell DSC) works well in Windows but is less common for Linux.
What should I do if I get this CAS-004 question wrong?
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.
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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