This LPIC-1 practice question tests your understanding of devices, filesystems and fhs. 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 of the following filesystem types are journaling filesystems? (Choose exactly three.)
ext4
Correct: ext4 supports journaling.
XFS
Correct: XFS supports journaling.
ext2
Why wrong: Incorrect: ext2 does not have journaling.
Btrfs
Correct: Btrfs supports journaling with CoW.
VFat
Why wrong: Incorrect: VFat (FAT32) has no journaling.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
ext4
ext4 is a journaling filesystem that uses a journal to record metadata changes before they are written to the main filesystem, ensuring consistency after a crash. It is the default filesystem for many Linux distributions and supports features like extents and delayed allocation.
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.
ext4
Why this is correct
Correct: ext4 supports journaling.
Related concept
Read the scenario before looking for a memorised answer.
XFS
Why this is correct
Correct: XFS supports journaling.
Related concept
Read the scenario before looking for a memorised answer.
ext2
Why it's wrong here
Incorrect: ext2 does not have journaling.
Btrfs
Why this is correct
Correct: Btrfs supports journaling with CoW.
Related concept
Read the scenario before looking for a memorised answer.
VFat
Why it's wrong here
Incorrect: VFat (FAT32) has no journaling.
Common exam traps
The trap here is that candidates often confuse ext2 with ext3/ext4, assuming all ext* filesystems are journaling, or they mistakenly think VFat has journaling capabilities due to its widespread use in removable media.
Detailed technical explanation
Journaling filesystems like ext4, XFS, and Btrfs implement a write-ahead log (journal) that records pending metadata updates; in the event of a crash, the journal is replayed to restore consistency. XFS uses a B-tree based structure for its journal and excels with large files, while Btrfs offers copy-on-write (CoW) snapshots and checksums for data integrity. The journal can be stored as a separate block device or within the filesystem itself, and its size directly impacts recovery time.
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 LPIC-1 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
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FAQ
Devices, Filesystems and FHS — This question tests Devices, Filesystems and FHS — Read the scenario before looking for a memorised answer..
The correct answer is: ext4 — ext4 is a journaling filesystem that uses a journal to record metadata changes before they are written to the main filesystem, ensuring consistency after a crash. It is the default filesystem for many Linux distributions and supports features like extents and delayed allocation.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
This LPIC-1 practice question is part of Courseiva's free LPI 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 LPIC-1 exam.
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