LPIC-1 System Architecture Practice Question
Which TWO statements about GRUB 2 are correct?
⚠ Common exam trap
Watch out — candidates often confuse the GRUB 2 configuration workflow with GRUB Legacy, mistakenly thinking menu.lst is still used, or that pressing 'e' opens the GRUB prompt instead of the entry editor.
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
✓
After modifying /etc/default/grub, the command update-grub must be run to regenerate grub.cfg.
After modifying /etc/default/grub, the update-grub command (which is a wrapper for grub-mkconfig) must be run to regenerate the /boot/grub/grub.cfg file. This ensures that changes to boot parameters, such as default timeout or kernel command-line options, are written into the actual configuration file that GRUB 2 reads at boot time.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
After modifying /etc/default/grub, the command update-grub must be run to regenerate grub.cfg.
Why this is correct
update-grub (or grub-mkconfig) regenerates grub.cfg based on settings in /etc/default/grub.
- ✓
The GRUB configuration file read at boot is /boot/grub/grub.cfg.
Why this is correct
GRUB 2 reads /boot/grub/grub.cfg at boot.
- ✗
GRUB 2 uses a configuration file named menu.lst.
Why it's wrong here
menu.lst is the configuration file for GRUB Legacy, not GRUB 2.
- ✗
The GRUB prompt can be accessed by pressing the 'e' key during boot.
Why it's wrong here
The 'e' key allows editing the current boot entry; the GRUB prompt is accessed by pressing 'c'.
- ✗
The /etc/default/grub file is directly read by GRUB during boot.
Why it's wrong here
The /etc/default/grub file is used by update-grub to generate grub.cfg, not read directly by GRUB.
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This LPIC-1 practice question is part of Courseiva's free LPI 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 LPIC-1 exam.