- A
httpd_use_nfs
Why wrong: Allows Apache to use NFS.
- B
httpd_can_network_connect
Why wrong: Controls outbound connections, not listening on ports.
- C
httpd_enable_homedirs
Why wrong: Allows Apache to access home directories.
- D
None of the above; port 443 is already permitted by default
SELinux allows Apache to bind to port 443 by default; no boolean change needed.
Question 945 of 1,000
XK0-005 Security Practice Question
This XK0-005 practice question tests your understanding of security. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 administrator wants to ensure that the Apache web server can only listen on port 443 (HTTPS) and not on port 80, enforced by SELinux. Which SELinux boolean should be set to allow Apache to use port 443?
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
✓
None of the above; port 443 is already permitted by default
The boolean httpd_use_nfs is irrelevant; the port context needs to be managed. However, SELinux has a boolean 'httpd_can_network_connect' but for specific ports, the administrator should use semanage port. But among the options, the correct one is 'httpd_can_network_connect' is not correct; actually, the answer is not about booleans but about port labeling. Since options are booleans, the correct answer is none; but the question expects that no boolean is needed because port 443 is already allowed. However, the best answer is that the boolean 'httpd_can_network_connect' is needed for outbound, not inbound. Given the options, choose the one that is correct for allowing HTTPS.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
httpd_use_nfs
Why it's wrong here
Allows Apache to use NFS.
- ✗
httpd_can_network_connect
Why it's wrong here
Controls outbound connections, not listening on ports.
- ✗
httpd_enable_homedirs
Why it's wrong here
Allows Apache to access home directories.
- ✓
None of the above; port 443 is already permitted by default
Why this is correct
SELinux allows Apache to bind to port 443 by default; no boolean change needed.
Related concept
Standard ACLs match source addresses.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
- Standard ACLs match source addresses.
- Extended ACLs can match source, destination, protocol and ports.
- The first matching ACL entry is used.
- There is usually an implicit deny at the end.
TExam Day Tips
- Check inbound versus outbound direction.
- Read the ACL from top to bottom.
- Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Real-world example
How this comes up in practice
A security administrator must allow nursing staff to reach a patient records server while blocking access from the guest Wi-Fi VLAN. After applying an extended ACL, traffic is still blocked from nursing workstations. The ACL was applied outbound instead of inbound on the wrong interface. Questions like this test ACL direction and placement rules.
What to study next
Got this wrong? Here's your next step.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related XK0-005 ACL questions on filtering logic and placement.
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FAQ
Questions learners often ask
What does this XK0-005 question test?
Security — This question tests Security — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: None of the above; port 443 is already permitted by default — The boolean httpd_use_nfs is irrelevant; the port context needs to be managed. However, SELinux has a boolean 'httpd_can_network_connect' but for specific ports, the administrator should use semanage port. But among the options, the correct one is 'httpd_can_network_connect' is not correct; actually, the answer is not about booleans but about port labeling. Since options are booleans, the correct answer is none; but the question expects that no boolean is needed because port 443 is already allowed. However, the best answer is that the boolean 'httpd_can_network_connect' is needed for outbound, not inbound. Given the options, choose the one that is correct for allowing HTTPS.
What should I do if I get this XK0-005 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related XK0-005 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Last reviewed: Jul 4, 2026
This XK0-005 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 XK0-005 exam.
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