LPIC-2 Linux Kernel and System Startup Practice Question
During boot, a server's video driver causes a freeze. At the GRUB2 menu, the administrator needs to interactively add the kernel parameter 'nomodeset' to the boot entry. Which key should be pressed to access the kernel command line editor?
⚠ Common exam trap
It's easy for candidates to confuse the GRUB2 interactive editor key 'e' with the GRUB legacy 'a' (append) or 'c' (command line), leading them to choose options that do not provide the full editing capability required to modify kernel parameters like 'nomodeset'.
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
✓
e
Pressing 'e' at the GRUB2 menu enters the edit mode for the selected boot entry, allowing the administrator to modify kernel parameters interactively. This is the standard GRUB2 keybinding to access the kernel command line editor, where 'nomodeset' can be added to the 'linux' line to disable kernel mode-setting and prevent the video driver from freezing during boot.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
a
Why it's wrong here
'a' is not a standard GRUB2 key for editing; it might be used for appending in some legacy GRUB versions but not GRUB2.
- ✓
e
Why this is correct
Pressing 'e' allows editing the selected boot entry's commands and kernel parameters.
- ✗
Tab
Why it's wrong here
Tab provides auto-completion in the GRUB command line, but does not open the editor.
- ✗
c
Why it's wrong here
'c' enters the GRUB command line, not the editor for the current boot entry.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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