Quick Answer
The correct commands are lsblk, df, and mount. lsblk lists all block devices and their mount points, providing a clear tree-like view of disk partitions and their associated filesystem usage. The df command displays filesystem usage in terms of total, used, and available space, and when used with the -h flag, it shows human-readable sizes alongside mount points. The mount command, when run without arguments, outputs all currently mounted filesystems and their mount points, making it essential for verifying active mounts. On the CompTIA Linux+ XK0-005 exam, this question tests your ability to distinguish between commands that show disk usage versus mount points—a common trap is confusing du (which shows per-directory usage but not mount points) or fdisk (which shows partition tables but not mounted filesystems). A reliable memory tip: think "LS for list, DF for disk free, MOUNT for mounted"—all three end with a clear view of where filesystems are attached.
This XK0-005 practice question tests your understanding of system management. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which THREE commands can be used to display the mount points and file system usage? (Choose three.)
df -h
Shows filesystem usage with mount points.
du
Why wrong: du shows directory sizes, not mount points and overall filesystem usage.
df -i
Why wrong: Shows inode usage, not storage usage.
mount
Lists all mounted filesystems and their mount points.
lsblk
Lists block devices with mount points (if mounted).
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
df -h
Option A shows disk usage per directory. Option B shows filesystem usage with mount points. Option D shows mounted filesystems. Option C shows inode usage. Option E shows overall disk space but not mount points.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
df -h
Why this is correct
Shows filesystem usage with mount points.
Related concept
Read the scenario before looking for a memorised answer.
du
Why it's wrong here
du shows directory sizes, not mount points and overall filesystem usage.
df -i
Why it's wrong here
Shows inode usage, not storage usage.
mount
Why this is correct
Lists all mounted filesystems and their mount points.
Related concept
Read the scenario before looking for a memorised answer.
lsblk
Why this is correct
Lists block devices with mount points (if mounted).
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Trap categories for this question
Command / output trap
du shows directory sizes, not mount points and overall filesystem usage.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the XK0-005 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which XK0-005 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
System Management — study guide chapter
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FAQ
System Management — This question tests System Management — Read the scenario before looking for a memorised answer..
The correct answer is: df -h — Option A shows disk usage per directory. Option B shows filesystem usage with mount points. Option D shows mounted filesystems. Option C shows inode usage. Option E shows overall disk space but not mount points.
Identify which XK0-005 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which TWO commands display disk usage information for filesystems? (Select 2.)
easyWhy B: Options A (df) and B (du) are correct. df shows filesystem-level usage, du shows per-directory usage. ls, fdisk, and parted do not primarily show disk usage.
Last reviewed: Jun 24, 2026
This XK0-005 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 XK0-005 exam.
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