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XK0-006 Practice Question: An administrator is managing a server using…
An administrator is managing a server using systemd and needs to control services and units. Which THREE of the following are valid systemd commands for service management? (Choose three.)
⚠ Common exam trap
Candidates often confuse SysV init commands (service, chkconfig) with systemd commands (systemctl). On the Linux+ exam, remember that systemd uses systemctl for service management, not the legacy SysV commands.
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
✓
systemctl mask
B is correct because 'systemctl mask' creates a symlink to /dev/null, making a unit completely unavailable and preventing it from being started manually or by dependencies. This is a valid systemd command for service management.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
service start
Why it's wrong here
Service is a SysVinit command, not systemd.
- ✓
systemctl mask
Why this is correct
Masks a unit, preventing it from being started.
- ✓
systemctl start
Why this is correct
Starts a service unit.
- ✓
systemctl enable
Why this is correct
Enables a unit to start at boot.
- ✗
chkconfig on
Why it's wrong here
Chkconfig is a SysVinit tool, not systemd.
Go deeper
Related to this question
Learn chapter
Installing Linux and Package Management
Key term
systemctl
systemctl is the command-line tool used to inspect, start, stop, enable, or disable services managed by the systemd init system in Linux.
Key term
systemd
systemd is a system and service manager for Linux operating systems that initializes and manages processes, services, and system resources after the kernel boots.
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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.