hardMultiple ChoiceObjective-mapped
CAS-004 Practice Question: Refer to the exhibit
Exhibit
type=AVC msg=audit(1234567890.123:456): avc: denied { connectto } for pid=1234 comm="httpd" scontext=system_u:system_r:httpd_t:s0 tcontext=system_u:system_r:unconfined_t:s0 tclass=unix_stream_socketRefer 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?
⚠ Common exam trap
The CASP+ exam often tests the misconception that disabling SELinux or setting it to permissive is the only way to resolve access issues, when in fact a targeted policy module is the correct and secure solution.
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
✓
Add an SELinux policy module to allow httpd_t to connectto unconfined_t
The web server (httpd_t) is denied access to the local database socket because SELinux enforces mandatory access controls. Adding an SELinux policy module that allows httpd_t to connect to unconfined_t (the domain of the database socket) grants the necessary permission without disabling security. This is the targeted fix that preserves SELinux protection while resolving the connectivity issue.
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.
Visual reference
Quick reference
Access Control Model Comparison
| Model | Acronym | Who Controls Access? | Best For |
|---|---|---|---|
| Discretionary Access Control | DAC | Resource owner | Small teams, file shares |
| Mandatory Access Control | MAC | System / security labels | Classified govt / military |
| Role-Based Access Control | RBAC | Administrator (via roles) | Enterprise environments |
| Attribute-Based Access Control | ABAC | Policy engine (user + resource attributes) | Fine-grained, dynamic policies |
| Rule-Based Access Control | RuBAC | System rules / ACLs | Firewall rules, network ACLs |
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CAS-005 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CAS-005 exam.