XK0-006 Troubleshooting Practice Question
An administrator wants to check the amount of free memory and swap usage on a system in a human-readable format. Which command should be used?
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
✓
free -h
free -h displays memory and swap usage in human-readable units (e.g., GiB).
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
free -h
Why this is correct
free -h shows memory in human-readable format.
- ✗
vmstat -h
Why it's wrong here
vmstat does not have -h option for human-readable.
- ✗
cat /proc/meminfo
Why it's wrong here
Shows raw numbers in kB, not human-readable.
- ✗
iostat -h
Why it's wrong here
iostat -h is not standard; iostat shows disk stats.
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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.