LFCS Service Configuration Practice Question
An administrator deploys a new custom service using a unit file called myapp.service. The service needs to start automatically at system boot. Which command should the administrator run to achieve this?
⚠ Common exam trap
Candidates often confuse `systemctl start` (which runs the service now) with `systemctl enable` (which configures automatic startup at boot), leading them to select option A incorrectly.
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 enable myapp.service
The `systemctl enable` command creates the necessary symlinks in the systemd unit configuration directories (e.g., `/etc/systemd/system/multi-user.target.wants/`) to ensure the service is started automatically at boot. This is the correct method to enable a service to start on boot in a systemd-based Linux system.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
systemctl start myapp.service
Why it's wrong here
Starts the service now but does not enable it for boot.
- ✓
systemctl enable myapp.service
Why this is correct
Creates symlinks to start the service at boot.
- ✗
systemctl add-wants myapp.service
Why it's wrong here
Not a valid systemctl command.
- ✗
systemctl daemon-reload myapp.service
Why it's wrong here
Reloads the daemon, not enable.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This LFCS practice question is part of Courseiva's free Linux Foundation 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 LFCS exam.