XK0-006 Security Practice Question
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.)
⚠ Common exam trap
A common mix-up: 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.
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
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.
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.
- ✗
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.
- ✗
Edit /etc/ssh/sshd_config to allow wheel group
Why it's wrong here
SSH config is unrelated.
Go deeper
Related to this question
Learn chapter
Linux Fundamentals and History
Key term
sudo
sudo is a command-line utility in Unix-like operating systems that allows a permitted user to execute a program as another user, typically the superuser (root), based on security policy settings.
Key term
Linux
Linux is an open-source operating system that manages computer hardware and software, widely used in servers, desktops, and embedded systems.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This XK0-006 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 XK0-006 exam.