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| Section | Objectives |
|---|---|
| Manage security | - Configure firewall settings using firewall-cmd and firewalld - List and identify SELinux file and process contexts - Manage default file permissions - Restore default file contexts - Use Boolean settings to modify SELinux settings - Set enforcing and permissive modes for SELinux - Manage SELinux port labels - Configure key-based authentication for SSH |
| Manage basic networking | - Configure hostname resolution - Restrict network access using firewalld and firewall-cmd - Configure IPv4 and IPv6 addresses - Configure network services to start automatically at boot |
| Operate running systems | - Adjust process scheduling - Boot systems into different targets manually - Interrupt the boot process to gain access to a system - Boot, reboot, and shut down a system normally - Identify CPU and memory intensive processes and kill processes - Start, stop, and check the status of network services - Securely transfer files between systems - Manage tuning profiles - Preserve system journals - Locate and interpret system log files and journals |
| Manage software | - Configure access to RPM repositories - Install and remove Flatpak software packages - Install and remove RPM software packages - Configure access to Flatpak repositories |
| Understand and use essential tools | - Create and edit text files - Locate, read, and use system documentation - Use grep and regular expressions to analyze text - Archive, compress, unpack, and uncompress files using tar, gzip, and bzip2 - Access remote systems using SSH - List, set, and change standard ugo/rwx permissions - Access a shell prompt and issue commands with correct syntax - Log in and switch users in multi-user targets - Use input-output redirection - Create hard and soft links - Create, delete, copy, and move files and directories |
| Create simple shell scripts | - Process output of shell commands within a script - Conditionally execute code - Use looping constructs to process files and command-line input - Process script inputs |
| Manage users and groups | - Change passwords and adjust password aging for local users - Create, delete, and modify local groups and group memberships - Create, delete, and modify local user accounts - Configure privileged access |
| Deploy, configure, and maintain systems | - Install and update software packages - Start and stop services and configure services to start automatically at boot - Schedule tasks using at, cron, and systemd timer units - Modify the system bootloader - Configure time service clients - Configure systems to boot into a specific target automatically |
| Create and configure file systems | - Diagnose and correct file permission problems - Extend existing logical volumes - Create, mount, unmount, and use VFAT, ext4, and XFS file systems - Mount and unmount network file systems using NFS - Configure autofs |
| Configure local storage | - Add new partitions, logical volumes, and swap non-destructively - Configure systems to mount file systems at boot by UUID or label - Assign physical volumes to volume groups - Create and remove physical volumes - Create and delete logical volumes - List, create, and delete partitions on GPT disks |
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NEW QUESTION # 55
Open kmcrl value of 5 , and can verify in /proc/ cmdline
Answer:
Explanation:
see explanation below.
Explanation
# vim /boot/grub/grub.conf
kernel/vmlinuz-2.6.32-71.el6.x86_64 ro root=/dev/mapper/GLSvg-GLSrootrd_LVM_LV=GLSvg/GLSroot rd_LVM_LV=GLSvg/GLSswaprd_NO_LUKSrd_NO_MDrd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us crashkernel=auto rhgb quiet kmcrl=5 Restart to take effect and verification:
# cat /proc/cmdline
ro root=/dev/mapper/GLSvg-GLSroot rd_LVM_LV=GLSvg/GLSroot rd_LVM_LV=GLSvg/GLSswap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet kmcrl=5
NEW QUESTION # 56
Create a Stratis pool named pool1 on /dev/sdc and create a file system named fs1.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
dnf install -y stratisd stratis-cli
systemctl enable --now stratisd
stratis pool create pool1 /dev/sdc
stratis filesystem create pool1 fs1
stratis filesystem list
Detailed Explanation:
* stratisd is the daemon and stratis-cli provides the command-line interface.
* A Stratis pool is created from a block device.
* The Stratis file system is then created inside that pool.
* RHEL 10 documents Stratis as an available volume-managing file-system layer. ( Red Hat
Documentation )
NEW QUESTION # 57
Configure your system to use the default repositories
YUM repositories are available from http://content/rhel9.0/x86_64/dvd/BaseOS and http://content/rhel9.0/x86_64/dvd/AppStream. Configure your system to use
these locations as default repositories.
Answer:
Explanation:
Solution:
[root@node1 ~]# vim /etc/yum.repos.d/rhcsa.repo
[Base]
name=Base
baseurl=http://content/rhel9.0/x86_64/dvd/BaseOS
enabled=1
gpgcheck=no
[App]
name=App
baseurl=http://content/rhel9.0/x86_64/dvd/AppStream
enabled=1
gpgcheck=no
# Verification
[root@node1 ~]# yum repoinfo
[root@node1 ~]# yum -y install vsftpd
NEW QUESTION # 58
SIMULATION
In the system, mounted the iso image /root/examine.iso to/mnt/iso directory. And enable automatically mount (permanent mount) after restart system.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation:
/etc/fstab:
/root/examine.iso /mnt/iso iso9660 loop 0 0 mount -a
mount | grep examine
NEW QUESTION # 59
Create a tar archive of /var/log named /root/logs.tar, then extract it into /backup.
Answer:
Explanation:
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.
NEW QUESTION # 60
......
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