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LFCS Storage Management Practice Question

Exhibit

Refer to the exhibit.

UUID=12345678-1234-1234-1234-123456789abc /               ext4    defaults,noatime        0 1
UUID=abcdef12-3456-7890-abcd-ef1234567890 /home           ext4    defaults                0 2
UUID=deadbeef-0123-4567-89ab-cdef01234567 swap            swap    defaults                0 0
/dev/sr0        /mnt/cdrom      auto    noauto,user        0 0

Refer to the exhibit. Which mount options are set for the root filesystem?

⚠ Common exam trap

Many exam-takers assume 'defaults' includes all common options like 'noatime' or 'errors=remount-ro', but 'defaults' is a fixed set of options (rw, suid, dev, exec, auto, nouser, async) and does not include performance or error-handling options unless explicitly specified.

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

✓

defaults,noatime

The root filesystem is mounted with both 'defaults' and 'noatime' options. 'defaults' includes standard options like rw, suid, dev, exec, auto, nouser, and async. 'noatime' disables updating the access time (atime) on every read, reducing disk I/O and improving performance, especially on SSDs or virtualized systems.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✓

    defaults,noatime

    Why this is correct

    The root filesystem has defaults and noatime options.

  • ✗

    defaults

    Why it's wrong here

    That is for /home.

  • ✗

    errors=remount-ro

    Why it's wrong here

    Not present in this fstab.

  • ✗

    noauto,user

    Why it's wrong here

    That is for the CD-ROM.

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JA

Written by Johnson Ajibi, MSc IT Security

Senior Network & Security Engineer · founder of Courseiva

This LFCS practice question is part of Courseiva's free Linux Foundation 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 LFCS exam.