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| Section | Objectives |
|---|---|
| Topic 1: Deploy, configure, and maintain systems | - Time service clients - Task scheduling with at, cron, and systemd timers - Service management - Default boot target configuration - Bootloader configuration - Software installation and updates |
| Topic 2: Create simple shell scripts | - Looping constructs - Conditional execution - Processing command output - Processing script inputs |
| Topic 3: Create and configure file systems | - NFS file systems - VFAT, ext4, and XFS file systems - Autofs - File permission troubleshooting - Extending logical volumes |
| Topic 4: Manage users and groups | - Local user account management - Local group management - Password and password aging management - Privileged access configuration |
| Topic 5: Configure local storage | - File system mounting using UUID or labels - Logical volumes - Volume groups - Adding partitions, logical volumes, and swap - GPT disk partitions - Physical volumes |
| Topic 6: Manage security | - SELinux enforcing and permissive modes - SELinux file context restoration - SELinux port labels - SSH key-based authentication - SELinux Boolean settings - SELinux file and process contexts - Firewall configuration - Default file permissions |
| Topic 7: Understand and use essential tools | - File archiving and compression - Remote system access using SSH - Hard and soft links - Shell access and command syntax - File and directory management - Users and multi-user targets - File permissions - System documentation - Creating and editing text files - Text analysis with grep and regular expressions - Input and output redirection |
| Topic 8: Manage software | - Configure Flatpak repositories - Install and remove Flatpak packages - Install and remove RPM packages - Configure RPM repositories |
| Topic 9: Manage basic networking | - Firewall configuration with firewalld and firewall-cmd - IPv4 and IPv6 configuration - Network services at boot - Hostname resolution |
| Topic 10: Operate running systems | - Secure file transfer - Process scheduling - System logs and journals - Tuning profiles - Boot systems into different targets - Network services - Interrupt the boot process - Boot, reboot, and shut down systems - Process monitoring and termination |
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NEW QUESTION # 44
Configure /var/tmp/fstab Permission.
Copy the file /etc/fstab to /var/tmp/fstab. Configure var/tmp/fstab permissions as the following:
Owner of the file /var/tmp/fstab is Root, belongs to group root
File /var/tmp/fstab cannot be executed by any user
User natasha can read and write /var/tmp/fstab
User harry cannot read and write /var/tmp/fstab
All other users (present and future) can read var/tmp/fstab.
Answer:
Explanation:
see explanation below.
Explanation
cp /etc/fstab /var/tmp/
* /var/tmp/fstab view the owner setfacl -m u:natasha:rw- /var/tmp/fstab setfacl -m u:haryy:---
/var/tmp/fstab
Use getfacl /var/tmp/fstab to view permissions
NEW QUESTION # 45
SIMULATION
Who ever creates the files/directories on archive group owner should be automatically should be the same group owner of archive.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation:
chmod g+s /archive
Verify using: ls -ld /archive Permission should be like:
drwxrws--- 2 root sysuser 4096 Mar 16 18:08 /archive
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 # 46
CORRECT TEXT
Install a FTP server, and request to anonymous download from /var/ftp/pub catalog. (it needs you to configure yum direct to the already existing file server. )
Answer:
Explanation:
# cd /etc/yum.repos.d
# vim local.repo
[local]
name=local.repo
baseurl=file:///mnt
enabled=1
gpgcheck=0
# yum makecache
# yum install -y vsftpd
# service vsftpd restart
# chkconfig vsftpd on
# chkconfig --list vsftpd
# vim /etc/vsftpd/vsftpd.conf
anonymous_enable=YES
NEW QUESTION # 47
Add sudo Permission Configuration
Allow members of the sysmgrs group to use sudo without entering a password.
Answer:
Explanation:
Solution:
[root@node1 ~]# visudo
...
%wheel ALL=(ALL) NOPASSWD: ALL
%sysmgrs ALL=(ALL) NOPASSWD: ALL
# Verification (mandatory operation)
[root@node1 ~]# su - natasha
[natasha@node1 ~]# sudo cat /etc/shadow
NEW QUESTION # 48
Part 1 (on Node1 Server)
Task 9 [Managing Files from the Command Line]
Search the string nologin in the /etc/passwd file and save the output in /root/strings
Answer:
Explanation:
* [root@node1 ~]# cat /etc/passwd | grep nologin > /root/strings
[root@node1 ~]# cat /root/strings
bin:x:1:1:bin:/bin:/sbin/nologin
daemon:x:2:2:daemon:/sbin:/sbin/nologin
adm:x:3:4:adm:/var/adm:/sbin/nologin
lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin
mail:x:8:12:mail:/var/spool/mail:/sbin/nologin
NEW QUESTION # 49
......
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