LFCS Storage Management Practice Question
Which TWO of the following are valid ways to mount a filesystem with the 'noexec' option to prevent execution of binaries?
⚠ Common exam trap
Candidates often confuse the 'defaults' option in fstab with a safe or neutral setting, not realizing that 'defaults' implicitly includes 'exec', so they incorrectly select option C as a valid way to prevent execution.
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
✓
mount -o noexec /dev/sdb1 /mnt/data
The `mount -o noexec /dev/sdb1 /mnt/data` command explicitly sets the `noexec` mount option at runtime, which prevents execution of any binaries on the mounted filesystem. This is a direct and valid way to apply the `noexec` flag without modifying configuration files.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
mount -o noexec /dev/sdb1 /mnt/data
Why this is correct
Correct: mount with noexec option.
- ✗
Add 'exec' to the fourth field of /etc/fstab for the entry.
Why it's wrong here
Allows execution, opposite of noexec.
- ✗
Add 'defaults' to the fourth field of /etc/fstab for the entry.
Why it's wrong here
Default options include exec, not noexec.
- ✗
mount --bind /mnt/data1 /mnt/data2
Why it's wrong here
Bind mount does not set noexec unless specified.
- ✓
Add 'noexec' to the fourth field of /etc/fstab for the entry.
Why this is correct
Correct: fstab option noexec.
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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.