XK0-006 Troubleshooting Practice Question
After a kernel panic, the system fails to boot. The administrator suspects a missing kernel module. Which command line should be added to the GRUB boot parameters to access a rescue shell and investigate?
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
✓
rd.break
Adding 'rd.break' breaks before pivot_root and drops to a shell for troubleshooting. 'single' boots to single-user mode but may not help if module is missing. 'emergency' is for systemd targets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
systemd.unit=emergency.target
Why it's wrong here
This boots to emergency mode but requires a working root filesystem.
- ✓
rd.break
Why this is correct
rd.break stops before pivot_root, giving a shell to inspect initramfs.
- ✗
single
Why it's wrong here
single boots to single-user mode but may not allow module loading.
- ✗
nomodeset
Why it's wrong here
nomodeset disables kernel mode setting, not for rescue.
Go deeper
Related to this question
Learn chapter
User and Group Administration
Key term
GRUB
GRUB (Grand Unified Bootloader) is a boot loader package that loads and manages the operating system startup process on Linux and other Unix-like systems.
Key term
Kernel panic
A kernel panic is a critical system error that occurs when the operating system's core (the kernel) encounters an unrecoverable fault, causing the system to stop all operations and often display an error message or a screen of death.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This XK0-006 practice question is part of Courseiva's free CompTIA 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 XK0-006 exam.