Red Hat Certified Systems Admin (RHCSA) EX200 Practice Exam

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• Which command redirects standard error to a file, overwriting existing content?
• Which command shows the status of system time synchronization?
• Which command shows all service unit files and their enabled/disabled state?
• Which sequence creates an XFS filesystem on /dev/sdXn and mounts it with noatime, updating /etc/fstab?
• Which chmod command sets owner read/write/execute and group/others read/execute on a file named secret.txt?
• Which pair of commands is used to manage access control lists on a file?
• Which command lists all yum repositories, including both enabled and disabled?
• Which command creates a new volume group using a physical volume?
• Which command initially prepares a disk to be used by LVM by creating a new physical volume on /dev/sdb1?
• How do you create a symbolic link named latest to a file /var/log/app/2024-01.log?
• Which command lists processes owned by a given user with their PIDs and names?
• Which command sequence creates a new user with a home directory and adds it to the wheel group, then prompts to set a password?
• Which syntax redirects both standard output and standard error to a file, leaving no output on screen?
• Which command is used to recursively grant the group read and write permissions and also execute permissions on directories when using the -R option?
• Which command adds the Fedora EPEL repository for yum?
• Which commands would you use to examine boot logs and identify boot failures, and which command helps check a failed service?
• What is the maximum number of primary partitions supported by MBR?
• How do you display all SELinux context for a file and restore default contexts if needed?
• Which command installs virtualization related groups using yum groupinstall with multiple group names?
• Which command adds a new group to the system?
• Which file is edited to configure automatic mounting of filesystems at boot?
• To support SMB/CIFS networking between servers on Red Hat 7, which package group is commonly installed?
• Which command can be used to display information about kernel packages, including installed and available kernels?
• Which command lists all failed service units?
• Which command would force a system to reboot into rescue mode from a non-graphical environment?
• Which method is described for gaining access to a system by bypassing normal login via the boot process?
• Which command would you use to verify if a service is enabled to start at boot?
• Which command prints a long listing showing both file permissions and ownership?
• Which statement best describes how cron access is controlled on a Linux system?
• Which form redirects both standard output and standard error to the same file in a Bash shell?
• What information does the w command display?
• Which command is used to verify the integrity of an installed package and its files against the package database?
• Which command initialises /dev/sdb1 as a physical volume for LVM?
• Which of the following is the correct pause-resume signal pair for a stopped process?
• Which pair of signals correspond to immediate termination and graceful shutdown respectively?
• Which command lists all service unit files and shows whether they are enabled or disabled?
• Which command creates a new volume group named vg_data using the device /dev/sdb1?
• Which command isolates the system into rescue mode?
• Which command lists dependencies for the network target?
• Which file exposes CPU information in Linux?
• How would you ensure a non-root user can log in via SSH using key-based authentication, and disable password authentication?
• Which command isolates the system into the graphical.target?
• You’ve increased the size of the /dev/battlestar/galactica LVM volume. It is mounted at /mnt/mydir; which command would you issue for OS and FS to recognize the increase?
• Which command creates a hard link named linkname to a file named file?
• What is the purpose of the updatedb command?
• Which statement about cp and ACL rules is true?
• Which sequence correctly describes creating a new logical volume on new disks using LVM, including preparing disks, PVs, VG, LV, and filesystem, then mounting?
• Which command sets the sticky bit on a directory such as /shared?
• To view the full set of coreutils commands, which command should you use?
• What is the purpose of the command 'yum repolist all'?
• In yum output, what does a dash '-' symbol indicate about a package?
• Which command updates the locate database used by the locate utility?
• In virt-install, which option makes the VM display headless (no GUI)?
• Which command downloads the nano package as an RPM using yumdownloader?
• Which command checks if httpd is configured to start automatically on boot?
• What are the three load-average time intervals shown by uptime?
• Which command identifies which package provides a given file, with example /bin/ls?
• How can you verify that the httpd package is installed on the system using yum?
• Which command shows the LABEL and UUID for a block device?
• Which command creates a symbolic link named linkname pointing to target?
• Which command sequence lists all repositories (enabled and disabled) and installs a package with a repository disabled for that operation?
• Which commands will temporarily set SELinux to permissive mode and verify the current mode?
• What is the correct order to remove a logical volume and its physical volumes?
• Which command changes the niceness (priority) of a running process?
• Which command deletes a user and their home directory?
• Which file is primarily edited to configure sudo privileges when using visudo?
• In tar, what does the -v option do when used with -c to create an archive?
• Which command would you use to create a GPT partition label on a disk?
• Which command shows that the nano package is installed by querying installed packages and filtering for nano?
• Which command shows a manual page for a command?
• Which statement correctly describes the purpose of 'setfacl --remove-default dir1'?
• Which sequence of commands would verify that the root partition is mounted with the correct options and remove its entry from /etc/fstab?
• Which service is typically required to support RPC-based access for mounting NFS shares on a Red Hat 7 system?
• Which command shows the current default firewall zone?
• After editing the /etc/chrony.conf, which command applies the changes?
• Where are standard documentation files typically stored on a Linux system?
• Which command sequence creates a new LVM physical volume on /dev/sdb1 and then creates a volume group named vg_data using that PV?
• To enable NFS client networking on Red Hat 7, which packages should be installed?
• Which pair of commands pauses and resumes a background job respectively?
• Which file-system attribute prevents deletion of files in a directory that is world-writable?
• Which command forces the kernel to reread partition tables after disk changes?
• What is the effect of the sticky bit on a directory in terms of deletion rights?
• What is the maximum number of primary partitions supported by a GPT partition table?
• Which command displays available systemd unit types?
• What does the command pkill -t pts/0 do?
• Which sequence correctly creates an XFS filesystem on /dev/battlestar/galactica, creates the mount point, and mounts it at /mnt/mydir?
• Which command lists the contents of a tar archive?
• Which statement about SFTP best describes its functionality?
• Which command locates all files with the setuid bit set on a Linux system?
• Which file contains the list of users allowed to run cron jobs on a Linux system?
• Where are the anacron job configurations typically located?
• Which command lists the boot-time impact of each service in order of time spent?
• Which command would you use to extend a logical volume by 5G?
• Which redirection sends standard error to standard output so both streams share the same destination?
• Which command shows the currently mounted filesystems including their mount points?
• Which command creates a new user with the comment field 'Sam Brown' and username sbrow?
• Which command permanently enables an SELinux boolean to allow httpd to read user content?
• Which tool provides a real-time, text-based view of system resource usage and processes in Linux?
• Which command extends the logical volume /dev/battlestar/galactica by +20G?
• Which command is used to assign a swap signature to a device?
• Which command would restart the SSH daemon to apply configuration changes?
• In fstab, which option disables the update of file access times?
• In tar, what is the meaning of the options -c -v -f?
• Which command displays the current kernel version?
• Which command can be used to reboot the system?
• Which command removes all permissions for others on a file named file1?
• Which command initializes a device as a new physical volume for LVM?
• To check whether a service is configured to start automatically at boot (enabled) without starting it, which command would you use?
• Where are systemd unit files typically located?
• Which command prints the kernel version, suitable for scripting?
• Which command shows swap devices currently enabled on the system?
• Which command lists the active state of all loaded service unit configuration files?
• Which command lists all currently loaded service units?
• Which statement best describes a local file system?
• What do scp and sftp refer to?
• What is the correct order of tasks for creating an LVM for the first time?
• Which command reveals detailed information about the kernel package in yum?
• In the permission expression g+rwX, what does the capital X signify?
• Which command would set a user's password to expire in 90 days and warn 7 days before expiration?
• Which approach extends an existing logical volume lv_home by 20G and then grows the filesystem accordingly, depending on the filesystem type?
• Which statement correctly describes a hard link?
• Which command displays information about a swap device?
• Which grub boot option is used to drop into an initramfs debug shell during recovery?
• What is SFTP and what is a common command to retrieve a file from a remote server?
• Which command removes all ACL entries from a file named file1?
• In Red Hat firewall-cmd, which sequence of commands would enable the http service in the public zone and apply the changes permanently?
• Which command shows the chrony sources used by the NTP service and helps verify configuration changes?
• Which statement about the apropos command is accurate?
• What is the purpose of the SIGCONT signal?
• Which option prints lines that do not match the given pattern?
• Which commands display disk I/O statistics and help identify top I/O wait processes (assuming iotop is installed)?
• Which command lists all available time zones on the system?
• Which tool(s) would you use to manage GPT-based partitions?
• You are extending a logical volume. To do this, you have to add the /dev/xvdj device to the volume group "battlestar". Which command would you issue to accomplish this task?
• Which command lists the active state of all loaded service units?
• In package management output, what does the dash '-' symbol indicate?
• Which command would search for the string 'error' in all log files under /var/log and show matching lines with context?
• Which of the following repository contents correctly adds a local repo at /etc/yum.repos.d/myrepo.repo with baseurl http://repo.example/pub?
• Which command would terminate all SSH sessions for a given user?
• Which command changes the group ownership of a file or directory recursively?
• Which utility is used to modify Access Control List entries on Linux files?
• Which manual page describes unit configuration files and their locations?
• How would you mount a new filesystem entry from /dev/vg_data/lv_backups to /mnt/backups and ensure it mounts at boot?
• Default ACL permissions are mainly used for what purpose?
• Which commands reconfigure SELinux to enforcing mode and verify the current mode?
• In regular expressions, what does the ? quantifier indicate?
• Which approach enables a user to run any command without a password in sudo?
• After expanding the underlying block device, which command grows the XFS filesystem mounted at /mnt/mydir?
• Which command starts the at daemon on a systemd-based Linux system?
• Which systemd-based command powers off the system?
• In an Access Control List (ACL) enabled file, which component defines the maximum effective permissions that can be granted to all entries?
• Which NMCLI command creates a Ethernet connection named eth0 with IP 192.168.1.50/24, gateway 192.168.1.1, and sets the DNS server to 8.8.8.8, then brings the connection up?
• Which path would you read to obtain CPU information from the proc filesystem?
• Which command sets the default boot target?
• Which command sets an ACL that gives user alice read permission on a file currently with 644 permissions?
• In the chage command, what do the -M and -W options control?
• Which command would you use to check the size of a mounted filesystem after resizing?
• Which statement best describes SCP?
• Which command creates a file named testfile containing 20 data blocks of 1024 kilobytes each from /dev/urandom?
• Which file system is best used with LVM volumes?
• As the root user, which command lists all processes running as root and displays their names?
• Which systemd target represents the graphical user interface environment?
• Which filesystem is the default in Red Hat installations?
• How do you configure a systemd timer to run a job every day at 2am?
• Which package provides the locate command on most systems?
• How do you set a system-wide umask for all users?
• Where is the file that lists all groups on a Linux system?
• Which command sequence installs the latest available package and updates the system to satisfy dependencies on RHEL 8/9?
• Which virt-install command creates a KVM virtual machine with a headless display and a 2GB RAM allocation, 20GB disk, and a CD-ROM OS image?
• Which command helps locate the binary, source, and manual page locations for a given command?
• Which command permanently sets an SELinux boolean value?
• Which command creates a new physical volume suitable for LVM on a disk such as /dev/xvdf1?
• Which command pattern would select lines that do not start with the letters l, i, n, u, or x?
• Which command would accurately create a 19 G logical volume named galactica in the battlestar volume group using /dev/xvdf1?
• Which approach configures log rotation to run daily and keep 14 rotated logs?
• Which command searches for the string 'error' recursively under /var/log with case-insensitive matching and line numbers?
• What is the function of the ACL mask during permission evaluation?
• Which command ensures new files created in a directory inherit the directory's group ownership by setting the setgid bit?
• Which command shows current active swap spaces?
• Which of the following describes the command find / -mtime -3?
• Which command would update the kernel about newly added partitions without rebooting?
• Which command adds an existing user to a specified group?
• Which command lists hidden Yum groups?
• Which yum command, when given the proper argument, displays all packages installed by yum on the system?
• Which command would search for a file named motd under the /etc directory?
• Which chrony command shows the currently tracked sources and their statuses?
• Which command sets the default target for system at boot?
• Which redirection appends standard error to an existing file?
• Which command sets the hostname permanently to a new value?
• What is the primary purpose of the iostat command in Linux?
• Which command shows the current ACLs on a file?
• Which command configures a new host to use NTP for time synchronization?
• Which numeric value represents SIGHUP when using kill commands?
• Which command searches a repository for files provided by a specific package?
• How do you freeze a cron job for maintenance and re-enable after the maintenance window?
• Which command verifies the integrity of a package and its dependencies on an RPM-based system?
• Which pgrep flag inverts the match, showing processes that do not match the pattern?
• What command enables httpd to start on boot?
• Which commands generate and view a filesystem label and UUID for a block device?
• Which command removes the default ACL entries from a directory named dir1?
• What is the maximum disk size for a GPT-based partition?
• After adding a service to a firewall, which command reloads the firewall to apply changes?
• Which command configures the system to boot directly into a graphical target by default?
• Which command kills all of the processes associated with the terminal pts/0?
• Which systemd command lists boot-time details per service?
• Which file contains information about partitions the OS is reading?
• Which commands retrieve a network interface's IP address and its default gateway using iproute2?
• Which DNF command removes packages that are no longer required by any installed package?
• What does tar -xzvf do?
• Which redirection appends standard error messages to an existing file?
• To permit root login over SSH by editing sshd_config and reloading SSH, which actions are performed?
• Which command enables a service to start at boot and also starts it immediately, and then allows you to verify its enabled state and status?
• Which commands verify disk space usage and identify directories consuming the most space?
• In regular expressions, what does the + quantifier indicate?
• Which command shows all available target unit files on the system?
• What does the command (while true; do echo -n 'Infinite Loop' >> ~/output.file; sleep 1; done) & do?
• Which command filters the system journal for a specific service and shows entries from the last hour?
• Which command would you use to verify if httpd will start automatically on boot?
• Which sequence creates a new partition on a disk with a GPT label and a 1 GiB ext4 partition, then formats the partition as ext4?
• Which command creates a volume group named battlestar from the physical volumes /dev/xvdf1 and /dev/xvdg1?
• Which command locks a user account without deleting it?
• In pkill, which option targets processes based on the owning user?