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XK0-006 Practice Question: A server's root filesystem is 100% full according…
A server's root filesystem is 100% full according to df -h. Which command should the administrator use to locate large files?
⚠ Common exam trap
CompTIA often tests the distinction between listing files (`ls`) and measuring disk usage (`du`), trapping candidates who think `ls -la` shows file sizes that reflect actual disk consumption, ignoring that `ls` reports logical size while `du` reports physical blocks allocated.
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
✓
du -sh /*
The `du -sh /*` command calculates disk usage for each top-level directory and file under `/`, summarizing the total in human-readable format. This directly identifies which directories or files consume the most space, allowing the administrator to pinpoint the cause of the 100% full root filesystem.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
ls -la /
Why it's wrong here
Lists files but not sizes of directories.
- ✗
fdisk -l
Why it's wrong here
Shows partition table, not file sizes.
- ✓
du -sh /*
Why this is correct
Shows sizes of top-level directories.
- ✗
find / -size +100M
Why it's wrong here
Finds files larger than 100MB, but directory overview is faster.
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About these practice questions
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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.