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| Section | Objectives |
|---|---|
| User and Group Management | - Manage local groups and group membership - Create, delete, and modify local user accounts |
| Storage Management | - Format and mount file systems - Create and manage partitions and logical volumes |
| Networking | - Manage network services and hostname resolution - Configure IPv4 and IPv6 networking |
| Security | - Manage SELinux contexts and policies - Configure firewall rules using firewalld |
| Running Systems | - Boot, reboot, and shut down a system safely - Manage processes and system services |
| Essential Tools | - Use command-line tools for text processing and system documentation - Access a shell and modify the shell environment |
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NEW QUESTION # 63
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 # 64
Who ever creates the files/directories on a data group owner should automatically be in the same group owner as data.
Answer:
Explanation:
see explanation below.
Explanation
1. chmod g+s /data
2. Verify using: ls -ld /data
Permission should be like this: drwxrws--- 2 root sysadmin 4096 Mar 16 18:08 /data If SGID bit is set on directory then who every users creates the files on directory group owner automatically the owner of parent directory. To set the SGID bit: chmod g+s directory To Remove the SGID bit: chmod g-s directory
NEW QUESTION # 65
SIMULATION
Open kmcrl value of 5 , and can verify in /proc/ cmdline
Answer:
Explanation:
See explanation below.
Explanation/Reference:
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 # 66
Adjust the size of the Logical Volume.
Adjust the size of the vo Logical Volume, its file system size should be 290M. Make sure that the content of this system is complete.
Note: the partition size is rarely accurate to the same size as required, so in the range 270M to 320M is acceptable.
Answer:
Explanation:
see explanation below.
Explanation
Addition
df -hT
lvextend -L +100M /dev/vg0/vo
Lvscan
xfs_growfs /home/ //home is the mounted directory of the LVM, this step just need to do in the practice environment, and test EXT4 does not need this step.
resize2fs /dev/vg0/vo// use this command to update in examination.
df -hT
OR
Subtraction
e2fsck -f/dev/vg0/vo
umount /home
resize2fs /dev/vg0/vo // the final required partition capacity is 100M lvreduce -l 100M /dev/vg0/vo mount /dev/vg0/vo/home df -hT
NEW QUESTION # 67
Set the default UMASK for user-created files
For the user natasha:
* The default permission for newly created files should be r--r--r--
* The default permission for newly created directories should be r-xr-xr-x
Answer:
Explanation:
Solution:
# su - natasha
Write the umask setting into the user's .bashrc file in the home directory:
bash
Copy code
echo 'umask 222' >> .bashrc
source .bashrc
Command explanation:
umask is used to control the default permissions for files and directories created by a user.
In umask:
The first digit is for special permissions and is usually 0 (can be omitted if not needed).
The second digit controls owner permissions.
The third digit controls group permissions.
The fourth digit controls permissions for others.
NEW QUESTION # 68
......
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