LPIC-1 Devices, Filesystems and FHS Practice Question
Exhibit
$ cat /etc/fstab # <file system> <mount point> <type> <options> <dump> <pass> /dev/sda1 /boot/efi vfat umask=0077 0 1 /dev/sda2 / ext4 errors=remount-ro 0 1 /dev/sda3 /data ext4 defaults 0 2 /dev/sdb1 /mnt/backup ext4 defaults 0 0
Refer to the exhibit. Which filesystem will be checked last during system boot by fsck?
⚠ Common exam trap
A common mix-up: candidates assume the pass number alone determines the order, ignoring that filesystems with the same pass number are checked sequentially based on their listing order in /etc/fstab.
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
✓
/dev/sda3
The /etc/fstab file defines the order in which filesystems are checked by fsck during boot, based on the sixth field (pass number). A pass number of 1 is checked first (typically the root filesystem), 2 is checked next (other filesystems), and 0 means no check. In the exhibit, /dev/sda3 has a pass number of 2, but since it is listed last among the entries with pass number 2, it will be checked after all other pass-2 filesystems, making it the last one checked overall.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
/dev/sda3
Why this is correct
Pass 2, checked after pass 1 filesystems and before any higher pass numbers.
- ✗
/dev/sda2
Why it's wrong here
Pass 1, checked before pass 2.
- ✗
/dev/sda1
Why it's wrong here
Pass 1, checked before pass 2.
- ✗
/dev/sdb1
Why it's wrong here
Pass 0, not checked.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.