LPIC-1 Devices, Filesystems and FHS Practice Question
After modifying /etc/fstab, an administrator wants to test if the new mount points can be mounted without rebooting. Which command should be used?
⚠ Common exam trap
Test-takers frequently confuse `systemctl daemon-reload` with a command that applies fstab changes, when in fact it only reloads systemd unit files and has no effect on mount operations defined 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
✓
mount -a
The `mount -a` command reads /etc/fstab and mounts all filesystems listed there that are not already mounted, making it the correct way to test new entries without rebooting. This command respects the mount options and order defined in fstab, allowing the administrator to verify that the new mount points work correctly.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
systemctl daemon-reload
Why it's wrong here
systemctl daemon-reload reloads systemd configuration, not mount filesystems directly.
- ✓
mount -a
Why this is correct
mount -a mounts all filesystems in /etc/fstab (excluding those already mounted).
- ✗
mount -o remount
Why it's wrong here
remount requires specifying a mount point or device.
- ✗
mount -t ext4
Why it's wrong here
This is incomplete; requires device and mount point.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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