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XK0-006 Practice Question: Which command will display the disk usage of each…

Which command will display the disk usage of each file and directory in the current directory?

⚠ Common exam trap

CompTIA often tests the distinction between `df` (filesystem-level) and `du` (directory/file-level) disk usage, and the trap here is that candidates mistakenly choose `ls -lh` thinking it shows disk usage, when it only shows logical file size and does not account for blocks or directory contents.

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 *

`du -sh *` calculates and displays the disk usage of each file and directory in the current directory. The `-s` flag summarizes each item, `-h` provides human-readable sizes (e.g., KB, MB), and the `*` wildcard expands to all non-hidden entries in the current directory, making it the precise command for this task.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✗

    df -h

    Why it's wrong here

    df shows disk usage of mounted filesystems, not individual files.

  • ✗

    ls -lh

    Why it's wrong here

    ls shows file sizes but not cumulative directory sizes.

  • ✓

    du -sh *

    Why this is correct

    du -sh * displays the total size of each file/directory in human-readable format.

  • ✗

    fdisk -l

    Why it's wrong here

    fdisk lists partition tables, not disk usage.

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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.