The answer is to add an SELinux policy module allowing httpd_t to connect to unconfined_t. This resolves the denial because SELinux enforces mandatory access controls that restrict the httpd process, running in the httpd_t domain, from connecting to a database socket labeled with the unconfined_t context unless a specific policy rule permits it. On the CompTIA SecurityX CAS-004 exam, this scenario tests your understanding of SELinux type enforcement and the principle of least privilege—a common trap is choosing to temporarily set SELinux to permissive mode or disable it entirely, which undermines security and is not a sustainable fix. Remember that SELinux denials are logged in /var/log/audit/audit.log, and the proper remediation is always to create a targeted policy module using tools like audit2allow rather than bypassing the protection. A helpful memory tip: “Don’t disable, don’t permissive—build a module that’s permissive only for the specific socket.”
CAS-004 Security Architecture Practice Question
This CAS-004 practice question tests your understanding of security architecture. 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 web server is unable to connect to a local database socket. Which of the following actions would MOST likely resolve this issue?
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
✓
Add an SELinux policy module to allow httpd_t to connectto unconfined_t
The SELinux denial indicates that the httpd process (in httpd_t domain) is not allowed to connect to a socket with context unconfined_t. Adding a custom SELinux policy module to allow this specific connection is the proper fix. Temporarily permissive mode or disabling SELinux is not a secure long-term solution. Restarting the service will not change the policy.
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.
✗
Disable SELinux entirely
Why it's wrong here
Disabling SELinux removes all protections, which is insecure.
✗
Restart the httpd service
Why it's wrong here
Restarting does not change SELinux policy; the denial will persist.
✗
Change the SELinux enforcing mode to permissive
Why it's wrong here
Permissive mode disables enforcement but is a temporary workaround, not a proper resolution.
✓
Add an SELinux policy module to allow httpd_t to connectto unconfined_t
Why this is correct
This creates a targeted policy rule to allow the specific connection while maintaining enforcement.
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.
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.
Security Architecture — This question tests Security Architecture — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Add an SELinux policy module to allow httpd_t to connectto unconfined_t — The SELinux denial indicates that the httpd process (in httpd_t domain) is not allowed to connect to a socket with context unconfined_t. Adding a custom SELinux policy module to allow this specific connection is the proper fix. Temporarily permissive mode or disabling SELinux is not a secure long-term solution. Restarting the service will not change the policy.
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.
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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