rhcsa practice exam Practice Exam 2025: Latest Questions

You need to find every line in /var/log/messages that contains the word "error" (case-insensitive) and save only those matching lines to /root/error-lines.txt. Which command is the best choice?

You are asked to create a small shell script that accepts a username as its first argument and prints "MISSING" if no argument is provided. Which snippet correctly validates the first positional parameter?

A system service named webapp fails to start after configuration changes. You need to see the most recent log entries for only that service using systemd tooling. Which command should you run?

You need to permanently allow HTTP traffic to a server using the default firewall management tools. Which command accomplishes this in the recommended way?

A filesystem mounted on /data is running out of space. The disk still has free space, and /data is an XFS filesystem on an LVM logical volume. After extending the logical volume, which command grows the filesystem online without unmounting it?

You want to create a new 2 GiB swap area on an existing LVM logical volume /dev/vg0/lvswap and make it activate automatically at boot. Which approach is correct?

A user reports they cannot write to files under /shared, even though they are in the correct group. You want new files created in /shared to automatically inherit the directory’s group ownership. Which action should you take?

After editing /etc/ssh/sshd_config, the SSH service fails to start. You want to validate the configuration syntax without restarting the service. What is the best command to run?

You must ensure that a custom script /usr/local/bin/collect.sh runs every day at 01:15, but only if the system is actually up at that time (no catch-up runs). Which solution fits best?

A new disk /dev/sdb is added and must be used for an LVM setup that provides a 10 GiB logical volume mounted at /srv with persistence across reboots. Which sequence is the most correct and complete approach?

You need to permanently add the directory /opt/tools to the PATH for ALL users on the system. Which approach is the best practice on a Red Hat system?

A log file /var/log/app.log is rapidly growing and you need to view new lines as they are written without rereading the entire file. Which command is most appropriate?

You must ensure a service called "httpd" starts automatically at boot. Which command accomplishes this?

A script needs to check whether a file passed as the first argument exists and is a regular file. Which test expression is correct in bash?

You created a new LVM logical volume /dev/vgdata/lvshare and formatted it with XFS. You want it mounted persistently at /share. Which entry is the best choice for /etc/fstab?

A system boots into emergency mode after a failed fstab entry. You want to edit /etc/fstab to fix the issue. The root filesystem is mounted read-only. What should you do first?

You need to search for lines containing the word "denied" in /var/log/secure and display the matching line numbers. Which command is correct?

A new disk /dev/sdb has been attached and you want to create a new LVM volume group named vgbackup using the entire disk with one partition marked for LVM. What is the correct high-level sequence?

You need to extend an existing XFS filesystem mounted at /data that resides on the LVM logical volume /dev/vg01/lvdata. A new physical disk has already been added to vg01 and you have extended the logical volume size. What is the correct command to grow the filesystem while it remains mounted?

A user reports they cannot read files in /srv/project even though they are a member of the "project" group. Directory permissions are drwxrwx--- root:project /srv/project, but new files created there by different users sometimes end up with group ownership set to their private group instead of "project". What is the best fix to ensure new files inherit the directory's group?

You are troubleshooting a server where a service should start only after the network is up. The service is enabled, but on boot it occasionally fails because it starts too early. Which systemd change is the best practice to ensure correct ordering without modifying the vendor unit file directly?

A user reports that they cannot run a command that reads /var/log/secure, even though file permissions are correct. You suspect SELinux is denying access. Which command most directly helps you confirm and interpret recent SELinux denials related to this issue?

You are asked to design a resilient local storage layout for /srv that can grow online as space needs change. Two new disks (/dev/sdb and /dev/sdc) are available, and you must provide redundancy against a single disk failure. Which approach best meets the requirements using standard RHEL tooling?

A system uses a static entry in /etc/fstab for /data. After a storage issue, the machine drops into emergency mode on boot because /data cannot be mounted. The administrator wants the system to continue booting even if /data is unavailable. Which /etc/fstab mount option is the most appropriate to prevent boot failure for this non-critical mount?

You need a simple shell script that reports which users have accounts with interactive shells, excluding system accounts and accounts using /sbin/nologin or /bin/false. Which command pipeline is the most appropriate core logic to embed in the script?