LPIC-1 GRUB 2 configuration Practice Question
Which TWO files are used to configure kernel boot parameters in GRUB?
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 answers are B and C. /etc/default/grub (B) is the primary configuration file for GRUB 2 where users set kernel boot parameters such as GRUB_CMDLINE_LINUX. /etc/grub.d/ (C) is a directory containing scripts that are executed by grub-mkconfig to generate the final /boot/grub/grub.cfg file; these scripts can be modified to add or change kernel boot parameters. Option E (/boot/grub/grub.cfg) is a generated file, not used for direct configuration. Options A (/sys/kernel/cmdline) and D (/proc/cmdline) display the current kernel command line but are not configuration files.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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/sys/kernel/cmdline
Why it's wrong here
Incorrect. /sys/kernel/cmdline displays the current kernel boot parameters but is not used to configure them.
- ✓
/etc/default/grub
Why this is correct
Correct. /etc/default/grub is the main configuration file where users define kernel boot parameters.
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/etc/grub.d/
Why this is correct
Correct. /etc/grub.d/ contains scripts that are used to generate the boot menu and can include kernel parameter configurations.
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/proc/cmdline
Why it's wrong here
Incorrect. /proc/cmdline shows the kernel parameters of the currently running kernel, not a configuration file.
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/boot/grub/grub.cfg
Why it's wrong here
Incorrect. /boot/grub/grub.cfg is the generated boot menu file; it is not directly used to configure kernel parameters.
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