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| Section | Objectives |
|---|---|
| Manage users and groups | - Configure privileged access - 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 local storage | - Create and remove physical volumes - Assign physical volumes to volume groups - Configure systems to mount file systems at boot by UUID or label - Create and delete logical volumes - Add new partitions, logical volumes, and swap non-destructively - List, create, and delete partitions on GPT disks |
| Operate running systems | - Identify CPU and memory intensive processes and kill processes - Manage tuning profiles - Start, stop, and check the status of network services - Adjust process scheduling - Securely transfer files between systems - Interrupt the boot process to gain access to a system - Locate and interpret system log files and journals - Boot, reboot, and shut down a system normally - Preserve system journals - Boot systems into different targets manually |
| Create and configure file systems | - Configure autofs - Create, mount, unmount, and use VFAT, ext4, and XFS file systems - Mount and unmount network file systems using NFS - Extend existing logical volumes - Diagnose and correct file permission problems |
| Understand and use essential tools | - Use grep and regular expressions to analyze text - Archive, compress, unpack, and uncompress files using tar, gzip, and bzip2 - Access a shell prompt and issue commands with correct syntax - Create and edit text files - Use input-output redirection - Create, delete, copy, and move files and directories - List, set, and change standard ugo/rwx permissions - Access remote systems using SSH - Create hard and soft links - Log in and switch users in multi-user targets - Locate, read, and use system documentation |
| Manage software | - Install and remove RPM software packages - Configure access to Flatpak repositories - Install and remove Flatpak software packages - Configure access to RPM repositories |
| Manage security | - Configure key-based authentication for SSH - Restore default file contexts - List and identify SELinux file and process contexts - Configure firewall settings using firewall-cmd and firewalld - Use Boolean settings to modify SELinux settings - Manage default file permissions - Set enforcing and permissive modes for SELinux - Manage SELinux port labels |
| Manage basic networking | - Configure IPv4 and IPv6 addresses - Configure hostname resolution - Restrict network access using firewalld and firewall-cmd - Configure network services to start automatically at boot |
| Create simple shell scripts | - Use looping constructs to process files and command-line input - Process script inputs - Conditionally execute code - Process output of shell commands within a script |
| Deploy, configure, and maintain systems | - Configure time service clients - Modify the system bootloader - Schedule tasks using at, cron, and systemd timer units - Start and stop services and configure services to start automatically at boot - Install and update software packages - Configure systems to boot into a specific target automatically |
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NEW QUESTION # 48
Create a volume group, and set the size is 500M, the size of single PE is 16M. Create logical volume named lv0 in this volume group, set size is 20 PE, make it as ext3 file system, and mounted automatically under data.
Answer:
Explanation:
fdisk /dev/vda
pvcreate /dev/vda3
vgcreate -s 16M vg0 /dev/vda3
lvcreate -n lv0 -l 20 vg0
mkfs.ext3 /dev/mapper/vg0-lv0
mkdir /data
/etc/fstab:
/dev/mapper/vg0-lv0 /data ext3 defaults 0 0
mount -a
mount | grep data
NEW QUESTION # 49
Which Ansible modules can be used to change the contents of a file? (Choose three correct answers.)
Answer: A,D,E
NEW QUESTION # 50
SIMULATION
There is a local logical volumes in your system, named with common and belong to VGSRV volume group, mount to the /common directory. The definition of size is 128 MB.
Requirement:
Extend the logical volume to 190 MB without any loss of data. The size is allowed between 160-160 MB after extending.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation: lvextend -L 190M /dev/mapper/vgsrv-common resize2fs /dev/mapper/vgsrv-common
NEW QUESTION # 51
You have a domain named www.rhce.com associated IP address is 192.100.0.2. Configure the Apache web server by implementing the SSL for encryption communication.
Answer:
Explanation:
vi /etc/httpd/conf.d/ssl.conf <VirtualHost 192.100.0.2> ServerName www.rhce.com DocumentRoot /var/www/rhce DirectoryIndex index.html index.htm ServerAdmin webmaster@rhce.com SSLEngine on SSLCertificateFile /etc/httpd/conf/ssl.crt/server.crt SSLCertificateKeyFile /etc/httpd/conf/ssl.key/server.key </VirtualHost> cd /etc/httpd/conf
3 make testcert
Create the directory and index page on specified path. (Index page can download from ftp://server1.example.com at exam time) service httpd start|restart chkconfig httpd on Apache can provide encrypted communications using SSL (Secure Socket Layer). To make use of encrypted communication, a client must request to https protocol, which is uses port 443. For HTTPS protocol required the certificate file and key file.
NEW QUESTION # 52
Create a Collaborative Directory
Create a shared directory /home/managers with the following characteristics:
- The group ownership of /home/managers is sysmgrs.
- The directory should be readable, writable, and executable by members of the sysmgrs group, but should not have read or write permissions for any other users
(of course, the root user has access to all files and folders).
- Any files created within /home/managers should automatically inherit the group ownership set to the sysmgrs group.
Answer:
Explanation:
Solution:
[root@node1 ~]# mkdir /home/managers
[root@node1 ~]# chgrp sysmgrs /home/managers
[root@node1 ~]# chmod 2770 /home/managers
# Verification
[root@node1 ~]# ll -d /home/managers
NEW QUESTION # 53
......
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