XK0-006 Troubleshooting Practice Question
A system fails to boot with a kernel panic. The administrator suspects a corrupt initramfs or missing kernel module. Which three methods could be used to recover the system? (Choose three.)
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
✓
Boot from a live CD/DVD, mount the root filesystem, and chroot
At the GRUB menu, editing boot parameters to add 'rd.break' drops into an emergency shell; adding 'single' boots into single-user mode; booting from a live CD allows chroot and repair.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Boot from a live CD/DVD, mount the root filesystem, and chroot
Why this is correct
From a live environment, you can repair the initramfs or kernel modules.
- ✓
At GRUB, edit the kernel line and add 'rd.break' to enter an emergency shell
Why this is correct
rd.break breaks before the switch root, allowing initramfs repair.
- ✗
Run 'fsck /dev/sda1' from the GRUB command line
Why it's wrong here
GRUB command line does not have fsck; fsck requires a full OS.
- ✗
Use 'systemctl rescue' from the boot prompt
Why it's wrong here
systemctl commands are not available at the boot prompt; they require a running system.
- ✓
At GRUB, edit the kernel line and add 'single' to boot into single-user mode
Why this is correct
Single-user mode allows root access for repairs.
Go deeper
Related to this question
Learn chapter
User and Group Administration
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.
Key term
User
A user is any person, system, or device that interacts with an IT service, resource, or identity system, typically authenticated through credentials and authorized to perform specific actions.
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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.