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Create and configure file systems →mediumMultiple ChoiceObjective-mapped

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.

Exhibit

# df -h /data
Filesystem      Size  Used Avail Use% Mounted on
/dev/sdc1       9.8G  5.0G  4.8G  51% /data
# xfs_info /dev/sdc1
meta-data=/dev/sdc1              isize=512    agcount=4, agsize=655360 blk
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=0
         =                       reflink=1
    data     =                       bsize=4096   blocks=2621440, imaxpct=25
         =                       sunit=0      swidth=0 blks
    naming   =version 2          bsize=4096   ascii-ci=0, ftype=1
    log      =internal           bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
    reflink  =                    noalign
# xfs_growfs /dev/sdc1
meta-data=/dev/sdc1              isize=512    agcount=4, agsize=655360 blk
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=0
         =                       reflink=1
    data     =                       bsize=4096   blocks=2621440, imaxpct=25
         =                       sunit=0      swidth=0 blks
    naming   =version 2          bsize=4096   ascii-ci=0, ftype=1
    log      =internal           bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
    reflink  =                    noalign
data blocks changed from 2621440 to 5242880

Refer to the exhibit. An administrator runs xfs_growfs on /dev/sdc1. What is the most likely reason the command succeeded without prior partition resizing?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

  • Clue: "most likely"

    Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

Exhibit

# df -h /data
Filesystem      Size  Used Avail Use% Mounted on
/dev/sdc1       9.8G  5.0G  4.8G  51% /data
# xfs_info /dev/sdc1
meta-data=/dev/sdc1              isize=512    agcount=4, agsize=655360 blk
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=0
         =                       reflink=1
    data     =                       bsize=4096   blocks=2621440, imaxpct=25
         =                       sunit=0      swidth=0 blks
    naming   =version 2          bsize=4096   ascii-ci=0, ftype=1
    log      =internal           bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
    reflink  =                    noalign
# xfs_growfs /dev/sdc1
meta-data=/dev/sdc1              isize=512    agcount=4, agsize=655360 blk
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=0
         =                       reflink=1
    data     =                       bsize=4096   blocks=2621440, imaxpct=25
         =                       sunit=0      swidth=0 blks
    naming   =version 2          bsize=4096   ascii-ci=0, ftype=1
    log      =internal           bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
    reflink  =                    noalign
data blocks changed from 2621440 to 5242880

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

✓

The underlying block device (partition or logical volume) was extended before the command

xfs_growfs can only expand an XFS filesystem to fill the available space on the underlying block device. If the command succeeded without prior partition resizing, it means the block device (e.g., a partition or logical volume) was already extended beforehand. The filesystem then uses the new space when xfs_growfs is run.

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.

  • ✗

    The partition was automatically resized by xfs_growfs

    Why it's wrong here

    Incorrect. xfs_growfs does not resize partitions or LVs.

  • ✓

    The underlying block device (partition or logical volume) was extended before the command

    Why this is correct

    Correct. xfs_growfs grows the filesystem to fill the device; the device must already be larger.

    Clue confirmation

    The clue word "most likely" in the question point toward this answer.

    Related concept

    Read the scenario before looking for a memorised answer.

  • ✗

    The filesystem was already using the full partition size and the command had no effect

    Why it's wrong here

    Incorrect. The output shows blocks changed, so the filesystem was grown.

  • ✗

    The filesystem was mounted with the 'grow' option allowing online growth

    Why it's wrong here

    Incorrect. There is no such mount option.

Common exam traps

Common exam trap: answer the scenario, not the keyword

A common misconception is that xfs_growfs can resize the partition itself, but it only expands the filesystem to match an already extended block device (e.g., LVM volume or disk partition).

Trap categories for this question

  • Command / output trap

    Incorrect. The output shows blocks changed, so the filesystem was grown.

Detailed technical explanation

How to think about this question

XFS filesystems are grown online using xfs_growfs, which requires the underlying block device (e.g., LVM logical volume or disk partition) to have been extended first. For partitions, this typically involves deleting and recreating the partition with a larger size (or using tools like parted), then running partprobe to inform the kernel. For LVM, lvextend is used. xfs_growfs then reads the new device size and expands the filesystem metadata accordingly. A common real-world scenario is extending an LVM volume for a /home partition and then running xfs_growfs without rebooting.

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.

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FAQ

Questions learners often ask

What does this EX200 question test?

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: The underlying block device (partition or logical volume) was extended before the command — xfs_growfs can only expand an XFS filesystem to fill the available space on the underlying block device. If the command succeeded without prior partition resizing, it means the block device (e.g., a partition or logical volume) was already extended beforehand. The filesystem then uses the new space when xfs_growfs is run.

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.

Are there clue words in this question I should notice?

Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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Last reviewed: Jul 4, 2026

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This EX200 practice question is part of Courseiva's free Red Hat 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 EX200 exam.