XK0-006 Services and User Management Practice Question
A Linux administrator needs to configure sudo so that members of the group 'webadmins' can run any command as any user without being prompted for a password, but only on the host 'web01'. Which entry should be added to the sudoers file?
⚠ Common exam trap
The trap here is forgetting the % prefix for groups in sudoers or misplacing the host field, which could grant broader access than intended.
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
✓
%webadmins web01=(ALL) NOPASSWD: ALL
The sudoers syntax allows specifying a group with %, a host, a runas list, and commands. The entry %webadmins web01=(ALL) NOPASSWD: ALL correctly allows group members to run any command as any user on web01 without a password prompt. This is the precise configuration needed.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
%webadmins ALL=(ALL) NOPASSWD: ALL
Why it's wrong here
This entry grants passwordless sudo to the group on all hosts (ALL), not just web01. The host field is set to ALL, which violates the requirement to restrict access to the specific host web01. This is overly permissive.
- ✓
%webadmins web01=(ALL) NOPASSWD: ALL
Why this is correct
This entry grants the group webadmins (denoted by %) passwordless sudo access to run any command as any user on the host web01. The syntax is correct: user/group, host, runas, and command with NOPASSWD tag. It precisely matches the requirement.
- ✗
webadmins web01=(ALL) NOPASSWD: ALL
Why it's wrong here
Without the percent sign, webadmins is interpreted as a username, not a group. This would fail to grant access to group members. The % prefix is required to indicate a group in sudoers, so this entry does not meet the requirement.
- ✗
%webadmins web01=(root) NOPASSWD: /usr/bin/apt
Why it's wrong here
This entry restricts the group to running only /usr/bin/apt as root, not any command. The requirement is to allow any command as any user, so this is too restrictive and does not fulfill the stated need.
Go deeper
Related to this question
Learn chapter
Managing Storage and File Systems
Key term
Linux
Linux is an open-source operating system that manages computer hardware and software, widely used in servers, desktops, and embedded systems.
Key term
User
A user is any person, system, or device that interacts with an IT service, resource, or identity system, typically authenticated through credentials and authorized to perform specific actions.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official CompTIA exam blueprint
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