What Are Exam Topics for RHCSA Certification Test?
The RHCSA certification exam assesses a candidate's knowledge and competency in a vast range of IT areas. Thus, the student must demonstrate their aptitude in the following domains:
- System Deployment — For this part, candidates will have to use at & cron to schedule tasks, stop services and set up services to start on their own during boot, configure systems so they boot into another target automatically, set up time service clients, install software from a remote repository or from the Red Hat Network, handle package module streams, and lastly, customize the system bootloader.
- Security — This exam objective asks students to tweak firewall configurations, use file access control lists, set up key-based authentication for SSH, configure various modes for SELinux, and to identify SELinux files. In addition, you will have to know how to deal with SELinux policies and settings.
- Running Systems — In this section, skills such as booting and rebooting a system perfectly, booting systems into another target manually, gaining access to a system by intervening in the boot process, killing memory intensive processes, scheduling a process, managing tuning profiles, finding as well as analyzing system log files and journals, saving system journals, stopping and checking the condition of network services, and transferring files safely among systems will all be tested.
- Users and Groups — In this next segment, examinees must be skilled at configuring and customizing local user accounts, changing passwords for such accounts, tweaking local groups as well as group memberships, and also setting up superuser access.
- Containers — This last domain checks if candidates can do things such as withdraw container images from a remote registry, inspect container images, use commands such as skopeo and podman to carry out container management, list running containers, and connect persistent storage to a container.
- Local Storage — This area checks a candidate's ability to make and delete partitions on MBR and GPT disks, remove physical volumes, designate physical volumes to volume groups, create and erase logical volumes, set up systems so they mount file systems according to their universally unique ID (UUID) or label when they boot, add extra partitions and logical volumes, and lastly, change to another system non-destructively.
- Essential Tools — This first area will evaluate how well examinees can use shell prompts and make commands in the right syntax, use input-output redirection, analyze texts with grep and regular expressions, use SSH to get into remote systems, log in and switch users, use star and bzip2 to store and unpack files, edit text files, delete and transfer files as well as directories, make soft and hard links, set and change ugo/rwx permissions, and finally, locate and utilize documentation for systems.
- Basic Networking — Here, students have to demonstrate they can set up IPv4 and IPv6 addresses, operate with hostname resolution, tweak networking solutions to launch on their own at boot, and also restrict network access with the help of Firewall.
- File Systems — Here, candidates need to mount and use ext4 and xfs file systems, use NFS to increase & decrease file systems, broaden logical volumes, design & implement set-GID directories for collaboration, compress disks, maintain layered storage, and finally, assess and rectify file permission issues.
- Simple Shell Scripts — This next category checks whether test-takers can run codes with conditional statements, process files with looping constructions, process inputs for scripts, processing shell command output, and exit codes.
The Importance of Red Hat EX200 Exam
Red Hat Certified Engineers are people who have skills in implementing, configuring, managing, and securing Red Hat Enterprise Linux-based systems. The Red Hat Certified Engineer (EX200) exam is designed to give Red Hat's customers validation of their skills. Selinux is a set of security extensions included in recent releases of Red Hat Enterprise Linux. RHCSA is the entry-level certification for Red Hat's enterprise specialists. Certified Professional Cloud Architect (RHCPA). Automatically renews. Red Hat Enterprise Linux 6 Administrator (RHEA). Organizations interested in getting certified to manage Red Hat Enterprise Linux 6 should review the RHEA syllabus Exam format: Multiple-choice questions. The exam is available in English or Russian languages on Portable devices. All Red Hat Certified Engineer (EX200) exam objectives. The exam was designed to reflect the objectives from Red Hat Enterprise Linux 6 Administration Course and Red Hat Enterprise Linux 6 or 7 Administration Course. Authenticating with Red Hat ID. Instant access. Community Q&A with Red Hat. Virtualization is important for cloud computing.
The Red Hat Certified Engineer (EX200) exam objectives are based on learning objectives from the following courseware. Exam practice questions with detailed explanations of common mistakes. Position with Red Hat. Lectures include detailed commentary on the features of Red Hat Enterprise Linux 7.
Reference: https://www.redhat.com/en/services/training/ex200-red-hat-certified-system-administrator-rhcsa-exam
Difficulty in writing the Red Hat EX200 Exam
The Red Hat Certified Engineer (EX200) exam is available in two formats. The following are some of the difficulties to be prepared for the exam:
- You will also be required to analyze data for best possible solutions.
- While working on a particular problem, you might be required to experiment with different alternatives.
- To pass this exam, you need to be able to identify and solve difficult problems.
- You will also be required to collaborate with other people involved in the process so that you can arrive at a common conclusion.
- You will need to understand the concepts, the terminology, and the basic components that are needed for carrying out tasks.
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RedHat EX200 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Manage software | - Install and remove Flatpak packages - Configure RPM repositories - Install and remove RPM packages - Configure Flatpak repositories |
| Manage users and groups | - Local group management - Local user account management - Privileged access configuration - Password and password aging management |
| Operate running systems | - Boot, reboot, and shut down systems - Process scheduling - Network services - System logs and journals - Tuning profiles - Boot systems into different targets - Process monitoring and termination - Secure file transfer - Interrupt the boot process |
| Deploy, configure, and maintain systems | - Time service clients - Service management - Bootloader configuration - Software installation and updates - Default boot target configuration - Task scheduling with at, cron, and systemd timers |
| Configure local storage | - Physical volumes - Adding partitions, logical volumes, and swap - Logical volumes - GPT disk partitions - File system mounting using UUID or labels - Volume groups |
| Create and configure file systems | - Extending logical volumes - VFAT, ext4, and XFS file systems - Autofs - NFS file systems - File permission troubleshooting |
| Manage security | - SSH key-based authentication - SELinux port labels - Default file permissions - SELinux enforcing and permissive modes - SELinux Boolean settings - SELinux file and process contexts - Firewall configuration - SELinux file context restoration |
| Manage basic networking | - IPv4 and IPv6 configuration - Firewall configuration with firewalld and firewall-cmd - Hostname resolution - Network services at boot |
| Create simple shell scripts | - Processing script inputs - Conditional execution - Processing command output - Looping constructs |
| Understand and use essential tools | - Hard and soft links - File permissions - Users and multi-user targets - Creating and editing text files - System documentation - Text analysis with grep and regular expressions - Shell access and command syntax - Remote system access using SSH - File archiving and compression - File and directory management - Input and output redirection |
RedHat Red Hat Certified System Administrator - RHCSARHEL 10 Sample Questions:
Configure autofs
Configure autofs to automatically mount the home directory of a remote user as described below:
- materials.example.com (172.25.254.254) exports /rhome via NFS to your system. This filesystem contains a pre-configured home directory for the user
remoteuser1.
- The home directory of remoteuser1 is materials.example.com:/rhome/remoteuser1.
- The home directory of remoteuser1 should be automatically mounted locally at /rhome/remoteuser1.
- The home directory must be writable by the user.
- The password for remoteuser1 is "flectrag".
Correct Answer:
Solution:
# Preparations (not required for the exam)
# Go back to foundation0, remote into classroom, create the remoteuser1 user and directory.
# This step is necessary to avoid issues with autofs mounting during testing.
[kiosk@foundation0 ~]$ ssh root@classroom 'useradd -u 1010 remoteuser1 && mkdir -p /rhome/remoteuser1 && chown remoteuser1: /rhome/remoteuser1'
# Install nfs-utils and autofs
[root@node1 ~]# yum -y install nfs-utils autofs
[root@node1 ~]# vim /etc/auto.master
/rhome /etc/auto.rhome
[root@node1 ~]# vim /etc/auto.rhome
remoteuser1 -rw materials.example.com:/rhome/remoteuser1
[root@node1 ~]# systemctl enable --now autofs
# Verification
[root@node1 ~]# ll /rhome/
[root@node1 ~]# ssh remoteuser1@localhost
remoteuser1@localhost\'s password: `flectrag`
$ pwd
/rhome/remoteuser1
$ touch my.file
$ mount | grep rhome
...
materials.example.com:/rhome/remoteuser1 on /rhome/remoteuser1 type nfs4
(`rw`,relatime,vers=4.2,rsize=131072,wsize=131072,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,clientaddr=172.25.250.100,local_lock=none,addr=1
72.25.254.254)
Adjust Logical Volume Size
Adjust the size of the logical volume "vo" and its filesystem to 300 MiB, ensuring that the filesystem content remains unchanged.
Note: Partition sizes rarely match the requested size exactly, so a range of 290 MiB to 310 MiB is acceptable.
For ext4 filesystems, use resize2fs to take effect immediately; for xfs filesystems, use xfs_growfs to take effect immediately.
Correct Answer:
Solution:
# Scan logical volumes
[root@node2 ~]# lvscan
# Extend the logical volume. With -rL, the filesystem space is adjusted immediately after extending the volume.
[root@node2 ~]# lvextend -rL 300M /dev/myvol/vo
# Check the changes
[root@node2 ~]# lsblk
[root@node2 ~]# lvs
# Verification
[root@node2 ~]# df -h
Configure the host to boot into multi-user.target by default.
Reveal Solution Discussion 0Correct Answer:
See the solution below in Explanation.
Explanation:
Solution:
systemctl set-default multi-user.target
systemctl get-default
Detailed Explanation:
* set-default changes the boot target persistently.
* get-default verifies the result.
* multi-user.target is the standard non-graphical multi-user boot target.
Create a compressed archive of /etc and verify its file type.
Reveal Solution Discussion 0Correct Answer:
See the solution below in Explanation.
Explanation:
Solution:
tar -zvcf /root/etc_backup.tar.gz /etc
file /root/etc_backup.tar.gz
Detailed Explanation:
* tar creates the archive.
* -z uses gzip compression.
* -v is verbose.
* -c creates the archive.
* -f names the output file.
* file confirms the resulting archive type.
Configure User Account
Configure the user account "manalo" with the user ID 3533. The password for this user should be "flectrag".
Correct Answer:
Solution:
[root@node1 ~]# useradd -u 3533 manalo
[root@node1 ~]# echo flectrag | passwd --stdin manalo
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