EX200 Create and configure file systems Practice Question
This EX200 practice question tests your understanding of create and configure file systems. 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 TWO of the following are required to create an XFS file system on LVM?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Run mkfs.xfs on the LV
D is correct because the `mkfs.xfs` command is used to create an XFS file system on a block device, such as a logical volume (LV). After the LV is created from a volume group, you must format it with a file system before it can be mounted and used. Without running `mkfs.xfs`, the LV has no file system structure.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Create a volume group
Why it's wrong here
A VG is necessary for LVM but not for the file system creation itself.
✗
Create a physical volume
Why it's wrong here
A PV is necessary for LVM but not for the file system creation itself.
✗
Run xfs_admin on the LV
Why it's wrong here
xfs_admin is used for tuning parameters, not for creating the file system.
✓
Run mkfs.xfs on the LV
Why this is correct
mkfs.xfs creates the file system on the LV.
Related concept
Read the scenario before looking for a memorised answer.
✓
Create a logical volume
Why this is correct
The LV is the block device on which the file system will be created.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Red Hat often tests the distinction between file system creation (`mkfs.xfs`) and file system administration (`xfs_admin`), trapping candidates who confuse the two commands or think that creating the LV alone is sufficient for mounting.
Detailed technical explanation
How to think about this question
Under the hood, `mkfs.xfs` writes the XFS superblock, allocation groups, and metadata structures to the LV, making it ready for data storage. A real-world scenario is when you extend an LV and need to grow the XFS file system with `xfs_growfs`; this requires the file system to already exist. The `xfs_admin` command can change labels or UUIDs on an existing XFS file system but cannot initialize one.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the EX200 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
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Create and configure file systems — This question tests Create and configure file systems — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Run mkfs.xfs on the LV — D is correct because the `mkfs.xfs` command is used to create an XFS file system on a block device, such as a logical volume (LV). After the LV is created from a volume group, you must format it with a file system before it can be mounted and used. Without running `mkfs.xfs`, the LV has no file system structure.
What should I do if I get this EX200 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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