XK0-006 Troubleshooting Practice Question
During boot, the system drops into an emergency target. Which command can be used to repair the root filesystem from this environment?
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
✓
fsck /dev/sda1
In emergency mode, the root filesystem is often mounted read-only. fsck can check and repair filesystems, but requires the filesystem to be unmounted.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
mount -o remount,rw / && fsck /
Why it's wrong here
fsck on a mounted filesystem can cause corruption; it must be unmounted.
- ✗
xfs_repair /dev/sda1
Why it's wrong here
xfs_repair is for XFS filesystems; not all systems use XFS.
- ✓
fsck /dev/sda1
Why this is correct
Correct; fsck can be run if the partition is unmounted or mounted read-only.
- ✗
journalctl -xb
Why it's wrong here
journalctl shows logs but does not repair filesystems.
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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.