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The RHCSA certification exam is a performance-based exam that tests the practical skills of system administrators in managing Red Hat Enterprise Linux systems. EX200 exam is conducted in a live environment, where candidates are required to perform various tasks that are commonly performed by system administrators. EX200 exam is designed to assess the candidate's ability to configure, manage, and troubleshoot a Red Hat Enterprise Linux system.
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The Red Hat EX200 certification exam is ideal for individuals who want to enhance their skills and knowledge in Linux system administration. Red Hat Certified System Administrator - RHCSARHEL 10 certification validates an individual's understanding of the Linux operating system and their ability to manage and configure Red Hat Enterprise Linux systems. Red Hat Certified System Administrator - RHCSARHEL 10 certification is recognized globally, and individuals who hold the certification are highly sought after in the IT industry.
Reference: https://www.redhat.com/en/services/training/ex200-red-hat-certified-system-administrator-rhcsa-exam
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RedHat EX200 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Configure local storage | - List, create, and delete partitions on GPT disks - Add new partitions, logical volumes, and swap non-destructively - Configure systems to mount file systems at boot by UUID or label - Create and remove physical volumes - Create and delete logical volumes - Assign physical volumes to volume groups |
| Manage users and groups | - Create, delete, and modify local groups and group memberships - Create, delete, and modify local user accounts - Change passwords and adjust password aging for local users - Configure privileged access |
| Manage software | - Install and remove Flatpak software packages - Configure access to Flatpak repositories - Install and remove RPM software packages - Configure access to RPM repositories |
| Manage security | - Set enforcing and permissive modes for SELinux - Manage default file permissions - Use Boolean settings to modify SELinux settings - List and identify SELinux file and process contexts - Manage SELinux port labels - Restore default file contexts - Configure key-based authentication for SSH - Configure firewall settings using firewall-cmd and firewalld |
| Manage basic networking | - Configure IPv4 and IPv6 addresses - Configure network services to start automatically at boot - Restrict network access using firewalld and firewall-cmd - Configure hostname resolution |
| Operate running systems | - Locate and interpret system log files and journals - Interrupt the boot process to gain access to a system - Manage tuning profiles - Identify CPU and memory intensive processes and kill processes - Preserve system journals - Boot, reboot, and shut down a system normally - Adjust process scheduling - Boot systems into different targets manually - Start, stop, and check the status of network services - Securely transfer files between systems |
| Create simple shell scripts | - Use looping constructs to process files and command-line input - Process script inputs - Process output of shell commands within a script - Conditionally execute code |
| Understand and use essential tools | - Access a shell prompt and issue commands with correct syntax - Archive, compress, unpack, and uncompress files using tar, gzip, and bzip2 - Locate, read, and use system documentation - Create, delete, copy, and move files and directories - List, set, and change standard ugo/rwx permissions - Create hard and soft links - Use grep and regular expressions to analyze text - Access remote systems using SSH - Create and edit text files - Log in and switch users in multi-user targets - Use input-output redirection |
| Deploy, configure, and maintain systems | - Configure time service clients - Modify the system bootloader - Start and stop services and configure services to start automatically at boot - Schedule tasks using at, cron, and systemd timer units - Configure systems to boot into a specific target automatically - Install and update software packages |
| Create and configure file systems | - Extend existing logical volumes - Diagnose and correct file permission problems - Configure autofs - Mount and unmount network file systems using NFS - Create, mount, unmount, and use VFAT, ext4, and XFS file systems |
RedHat Red Hat Certified System Administrator - RHCSARHEL 10 Sample Questions:
Create a tar archive of /var/log named /root/logs.tar, then extract it into /backup.
Reveal Solution Discussion 0Correct Answer:
See the solution below in Explanation.
Explanation:
Solution:
mkdir -p /backup
tar -cvf /root/logs.tar /var/log
tar -xvf /root/logs.tar -C /backup
Detailed Explanation:
* tar -cvf creates an uncompressed archive.
* tar -xvf extracts the archive.
* -C /backup tells tar where to extract the files.
* This is a common RHCSA-style archive and restore task.
Create a volume group with a physical extent size of 16 MB and create a logical volume using 30 extents.
Reveal Solution Discussion 0Correct Answer:
See the solution below in Explanation.
Explanation:
Solution:
pvcreate /dev/sdb3
vgcreate -s 16M VG1 /dev/sdb3
lvcreate -l 30 -n LV1 VG1
mkfs.ext4 /dev/VG1/LV1
Detailed Explanation:
* vgcreate -s 16M sets PE size to 16 MB.
* lvcreate -l 30 allocates 30 extents.
* 30 x 16 MB = 480 MB total LV size.
* mkfs.ext4 creates the filesystem.
Create a snapshot of the Stratis file system fs1 in pool pool1 named fs1-snap.
Reveal Solution Discussion 0Correct Answer:
See the solution below in Explanation.
Explanation:
Solution:
stratis filesystem snapshot pool1 fs1 fs1-snap
stratis filesystem list
Detailed Explanation:
* This creates a snapshot of the existing Stratis file system.
* Snapshots are useful for rollback, backup, and testing operations.
* Stratis features, including pool and file-system management, are part of RHEL 10 file-system
administration. ( Red Hat Documentation )
Create a user harry, set the password to expire every 30 days, and force a password change on first login.
Reveal Solution Discussion 0Correct Answer:
See the solution below in Explanation.
Explanation:
Solution:
useradd harry
passwd harry
chage -M 30 -d 0 harry
chage -l harry
Detailed Explanation:
* useradd harry creates the local user.
* passwd harry sets the initial password.
* chage -M 30 sets the maximum password age to 30 days.
* chage -d 0 forces the user to change the password at next login.
* chage -l harry verifies the policy.
Create a system monitoring script
* Create a script named systeminfo.
* The script must be located in /usr/local/bin.
* The script is used to obtain information about the current system processes. It must output the following process information in order:
Process owner
Process PID
Virtual memory usage
Resident (physical) memory usage
CPU usage percentage
The output must be sorted by CPU usage percentage, with the process that consumes the most CPU displayed last.
Correct Answer:
Solution:
[root@node1 ~]# vim /usr/local/bin/systeminfo
#!/bin/bash
ps -xao user,pid,vsz,rss,%cpu --sort=pcpu
Using sort:
#!/bin/bash
ps -xao user,pid,vsz,rss,%cpu | sort -fnk 5
Verify:
[root@node1 ~]# chmod +x /usr/local/bin/systeminfo
[root@node1 ~]# systeminfo
Explanation of ps -xao:
x - Display processes without a controlling terminal, and show the full path of each command
a - Display all processes associated with a terminal, except session leaders
o - User-defined output format
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