20+ practice questions focused on Devices, Filesystems and FHS — one of the most tested topics on the Linux Professional Institute Certification Level 1 LPIC-1 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Devices, Filesystems and FHS PracticeA system administrator wants to mount a USB flash drive formatted with the ext4 filesystem. The device is detected as /dev/sdc1. Which command should be used to mount the device to /mnt/usb?
Explanation: Option C is correct because the standard syntax for the mount command is `mount [options] <device> <mountpoint>`. Here, `/dev/sdc1` is the device and `/mnt/usb` is the target directory. The ext4 filesystem is auto-detected by the kernel, so specifying `-t ext4` is optional but not incorrect.
A Linux system has two SATA disks: /dev/sda (250GB) and /dev/sdb (500GB). The administrator wants to create a logical volume group named 'vgdata' using partitions on both disks, then create a 600GB logical volume named 'lvdata' for a database. Which sequence of commands should be used?
Explanation: Option C is correct because it follows the proper LVM sequence: first create physical volumes (PVs) on the partitions /dev/sdb1 and /dev/sdc1 using pvcreate, then create the volume group 'vgdata' from those PVs using vgcreate, and finally create the logical volume 'lvdata' with a size of 600GB using lvcreate. This order ensures that the PVs exist before the VG is created, and the VG exists before the LV is created.
During boot, a Linux system displays 'Kernel panic – not syncing: VFS: Unable to mount root fs on unknown-block(0,0)'. Which of the following is the most likely cause?
Explanation: The error 'unknown-block(0,0)' indicates the kernel cannot find a device to mount as root. This typically occurs when the kernel lacks the driver for the storage controller (e.g., SATA, NVMe, SCSI host adapter) needed to access the root filesystem. Without the driver, the kernel cannot enumerate the block device, even if the root= parameter is correct and the filesystem is intact.
Which of the following commands displays the amount of free disk space on all mounted filesystems in a human-readable format?
Explanation: The `df -h` command displays disk space usage for all mounted filesystems with sizes in human-readable units (e.g., KB, MB, GB). The `-h` flag converts raw block counts into powers of 1024 with appropriate suffixes, making the output easy to interpret at a glance.
An administrator needs to create a new ext4 filesystem on /dev/sdb1 and wants to reserve 2% of the blocks for the root user. Which command should be used?
Explanation: Option A is correct because the `-m` flag in `mkfs.ext4` specifies the percentage of filesystem blocks reserved for the root user (superuser). By default, ext4 reserves 5% of blocks; using `-m 2` reduces this to 2%, as required. This command creates a new ext4 filesystem on `/dev/sdb1` with the specified reserved block percentage.
+15 more Devices, Filesystems and FHS questions available
Practice all Devices, Filesystems and FHS questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Devices, Filesystems and FHS. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Devices, Filesystems and FHS questions on the LPIC-1 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Devices, Filesystems and FHS is tested as part of the Linux Professional Institute Certification Level 1 LPIC-1 blueprint. Practicing with targeted Devices, Filesystems and FHS questions ensures you can handle any format or difficulty that appears.
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Difficulty is subjective, but Devices, Filesystems and FHS is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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