20+ practice questions focused on Create and configure file systems — one of the most tested topics on the Red Hat Certified System Administrator EX200 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Create and configure file systems PracticeA system administrator needs to create a new ext4 filesystem on /dev/sdb1 and mount it persistently at /data. Which set of commands should be used?
Explanation: It creates the ext4 filesystem with `mkfs -t ext4 /dev/sdb1`, creates the mount point directory with `mkdir /data`, mounts the filesystem immediately with `mount /dev/sdb1 /data`, and then adds an entry to `/etc/fstab` using the correct format (device, mount point, filesystem type, options, dump, pass) to ensure the mount persists across reboots. The `&&` operator ensures each command only runs if the previous one succeeds, which is a safe practice for scripting this task.
A file server is experiencing slow write performance. The admin suspects the filesystem is nearly full. Which command should be used to check disk usage per partition?
Explanation: The `df -h` command displays disk space usage for all mounted filesystems in human-readable format (e.g., GB, MB). This directly answers the admin's need to check per-partition usage and identify if a filesystem is nearly full, which can cause slow write performance due to lack of free space.
A technician attempts to mount an XFS filesystem from /dev/sdc1 to /mnt/backup but receives: 'mount: /mnt/backup: mount point does not exist.' The directory /mnt/backup does exist. What is the most likely cause?
Explanation: The error message 'mount: /mnt/backup: mount point does not exist' is misleading because the directory does exist. The most likely cause is that SELinux is blocking the mount due to a missing or incorrect context on the mount point. SELinux requires the mount point directory to have a specific context (e.g., `default_t` or a context matching the filesystem type) for the mount to succeed; if the context is wrong or missing, the kernel may treat the directory as nonexistent for the mount operation, resulting in the observed error. Red Hat exams often test this nuance, where SELinux can cause a 'does not exist' error even when the directory is present, leading candidates to overlook SELinux as the root cause.
A system has two 500GB disks in a RAID1 (mirror) using mdadm. One disk fails. After replacement, what is the correct procedure to restore redundancy?
Explanation: When replacing a failed disk in a RAID1 array managed by mdadm, the new disk must have a partition table that matches the surviving disk. Using sfdisk to copy the partition table from /dev/sda to /dev/sdb ensures that the partition layout (e.g., partition type 0xFD for Linux RAID autodetect) is identical, which is required before adding the partition (e.g., /dev/sdb1) to the array with mdadm --manage --add. Simply adding the raw disk without a proper partition table would fail because mdadm expects a partition with the correct RAID superblock and partition type.
An admin needs to mount an NFS export from server nfs.example.com:/exports/app to /mnt/app with options for read-only and no root squash. Which command is correct?
Explanation: The `mount -t nfs -o ro,no_root_squash` command mounts the NFS export from `nfs.example.com:/exports/app` to `/mnt/app` as read-only (`ro`) and disables root squash (`no_root_squash`), which allows the root user on the client to retain root privileges when accessing files on the NFS server. The `-t nfs` specifies the NFS filesystem type, and the mount point `/mnt/app` must exist prior to execution.
+15 more Create and configure file systems questions available
Practice all Create and configure file systems questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Create and configure file systems. 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
Create and configure file systems questions on the EX200 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. Create and configure file systems is tested as part of the Red Hat Certified System Administrator EX200 blueprint. Practicing with targeted Create and configure file systems questions ensures you can handle any format or difficulty that appears.
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Difficulty is subjective, but Create and configure file systems 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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