LPIC-1 System Architecture Practice Question
An administrator wants to add a kernel parameter 'quiet splash' to the default boot entry. Which file should be edited?
⚠ Common exam trap
Candidates often confuse the auto-generated /boot/grub/grub.cfg (option D) with the source configuration file, or mistakenly think the legacy /etc/grub.conf (option C) is still used in GRUB 2 environments.
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
✓
/etc/default/grub
The correct file to edit is /etc/default/grub because it is the main configuration file for GRUB 2 where kernel boot parameters like 'quiet splash' are defined in the GRUB_CMDLINE_LINUX_DEFAULT variable. After editing this file, the administrator must run update-grub (or grub-mkconfig) to regenerate the actual boot configuration file /boot/grub/grub.cfg.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
/etc/default/grub
Why this is correct
This is the configuration file where kernel parameters are set and then applied by running update-grub.
- ✗
/etc/grub.d/00_header
Why it's wrong here
This is a script that generates part of grub.cfg, not where parameters are stored.
- ✗
/etc/grub.conf
Why it's wrong here
This is used by GRUB legacy, not GRUB 2.
- ✗
/boot/grub/grub.cfg
Why it's wrong here
This file is generated by grub-mkconfig and should not be manually edited.
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