- A
Uncomment the line '%wheel ALL=(ALL) ALL' in /etc/sudoers using visudo
Grants sudo access to wheel group members.
- B
Set the setuid bit on /usr/bin/sudo
Why wrong: sudo already has setuid; not needed.
- C
Run 'sudo visudo -c' to check syntax
Why wrong: Checks syntax but does not enable access.
- D
Add users to the 'wheel' group using usermod -aG wheel username
Adds users to the wheel group.
- E
Edit /etc/ssh/sshd_config to allow wheel group
Why wrong: SSH config is unrelated.
Question 842 of 1,000
XK0-005 Security Practice Question
This XK0-005 practice question tests your understanding of security. 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.
A Linux administrator needs to configure sudo access for members of the 'wheel' group to run any command. Which two steps are required? (Choose TWO.)
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
✓
Uncomment the line '%wheel ALL=(ALL) ALL' in /etc/sudoers using visudo
Option A is correct because the line '%wheel ALL=(ALL) ALL' in /etc/sudoers grants all members of the 'wheel' group permission to execute any command as any user. This line must be uncommented using visudo, which locks the file to prevent concurrent edits and performs syntax validation before saving. Option D is correct because users must be added to the 'wheel' group using 'usermod -aG wheel username' for the sudoers rule to apply to them.
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.
- ✓
Uncomment the line '%wheel ALL=(ALL) ALL' in /etc/sudoers using visudo
Why this is correct
Grants sudo access to wheel group members.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Set the setuid bit on /usr/bin/sudo
Why it's wrong here
sudo already has setuid; not needed.
- ✗
Run 'sudo visudo -c' to check syntax
Why it's wrong here
Checks syntax but does not enable access.
- ✓
Add users to the 'wheel' group using usermod -aG wheel username
Why this is correct
Adds users to the wheel group.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Edit /etc/ssh/sshd_config to allow wheel group
Why it's wrong here
SSH config is unrelated.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse the setuid bit on sudo (which is already set) with a configuration step, or think that editing SSH config or running syntax checks alone grants sudo access, when in fact both the sudoers rule and group membership are required.
Detailed technical explanation
How to think about this question
The sudoers file uses a privilege specification format: 'who where = (run_as) what'. The line '%wheel ALL=(ALL) ALL' means any user in the wheel group can run any command on any host as any user. The visudo command uses a temporary file and checks syntax with 'visudo -c' before overwriting the original, preventing lockouts from syntax errors. In real-world scenarios, administrators often combine this with 'Defaults timestamp_timeout=0' to require a password for every sudo invocation for security.
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.
TExam Day Tips
- 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 XK0-005 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this XK0-005 question test?
Security — This question tests Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Uncomment the line '%wheel ALL=(ALL) ALL' in /etc/sudoers using visudo — Option A is correct because the line '%wheel ALL=(ALL) ALL' in /etc/sudoers grants all members of the 'wheel' group permission to execute any command as any user. This line must be uncommented using visudo, which locks the file to prevent concurrent edits and performs syntax validation before saving. Option D is correct because users must be added to the 'wheel' group using 'usermod -aG wheel username' for the sudoers rule to apply to them.
What should I do if I get this XK0-005 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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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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