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| Section | Objectives |
|---|---|
| Manage software | - Install and remove RPM software packages - Configure access to Flatpak repositories - Install and remove Flatpak software packages - Configure access to RPM repositories |
| Create and configure file systems | - Mount and unmount network file systems using NFS - Create, mount, unmount, and use VFAT, ext4, and XFS file systems - Diagnose and correct file permission problems - Configure autofs - Extend existing logical volumes |
| Configure local storage | - Configure systems to mount file systems at boot by UUID or label - Assign physical volumes to volume groups - Create and delete logical volumes - List, create, and delete partitions on GPT disks - Add new partitions, logical volumes, and swap non-destructively - Create and remove physical volumes |
| Manage basic networking | - Restrict network access using firewalld and firewall-cmd - Configure hostname resolution - Configure IPv4 and IPv6 addresses - Configure network services to start automatically at boot |
| Manage users and groups | - Configure privileged access - Change passwords and adjust password aging for local users - Create, delete, and modify local user accounts - Create, delete, and modify local groups and group memberships |
| Understand and use essential tools | - Access a shell prompt and issue commands with correct syntax - Create hard and soft links - Create, delete, copy, and move files and directories - Archive, compress, unpack, and uncompress files using tar, gzip, and bzip2 - Log in and switch users in multi-user targets - List, set, and change standard ugo/rwx permissions - Use grep and regular expressions to analyze text - Create and edit text files - Access remote systems using SSH - Locate, read, and use system documentation - Use input-output redirection |
| Operate running systems | - Manage tuning profiles - Boot systems into different targets manually - Interrupt the boot process to gain access to a system - Adjust process scheduling - Boot, reboot, and shut down a system normally - Identify CPU and memory intensive processes and kill processes - Securely transfer files between systems - Locate and interpret system log files and journals - Preserve system journals - Start, stop, and check the status of network services |
| Create simple shell scripts | - Conditionally execute code - Process output of shell commands within a script - Use looping constructs to process files and command-line input - Process script inputs |
| Deploy, configure, and maintain systems | - Configure systems to boot into a specific target automatically - Modify the system bootloader - Configure time service clients - Start and stop services and configure services to start automatically at boot - Schedule tasks using at, cron, and systemd timer units - Install and update software packages |
| Manage security | - Manage SELinux port labels - Restore default file contexts - Manage default file permissions - Set enforcing and permissive modes for SELinux - Use Boolean settings to modify SELinux settings - List and identify SELinux file and process contexts - Configure firewall settings using firewall-cmd and firewalld - Configure key-based authentication for SSH |
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NEW QUESTION # 48
Install
the appropriate kernel update from http://server.domain11.example.com/pub/updates.
The following criteria must also be met:
The updated kernel is the default kernel when the system is rebooted
The original kernel remains available and bootable on the system
Answer:
Explanation:
see explanation below.
Explanation
* ftp server.domain11.example.com Anonymous login
ftp> cd /pub/updates ftp> ls
ftp> mget kernel* ftp> bye
* rpm -ivh kernel*
* vim /etc/grub.conf
Check the updatted kernel is the first kernel and the orginal kernel remains available. set default=0 wq!
NEW QUESTION # 49
Configure a HTTP server, which can be accessed through http://station.domain40.example.com.
Please download the released page from http://ip/dir/example.html.
Answer:
Explanation:
# yum install -y httpd
# chkconfig httpd on
# cd /var/www/html
# wget http://ip/dir/example.html
# cp example.com index.html
# vim /etc/httpd/conf/httpd.conf
NameVirtualHost 192.168.0.254:80
<VirtualHost 192.168.0.254:80>
DocumentRoot /var/www/html/
ServerName station.domain40.example.com
</VirtualHost>
NEW QUESTION # 50
Which Ansible keyword is used in a playbook to store the result (i.e. return code) of a task in a variable?
Answer: A
Explanation:
Explanation/Reference:
Reference https://docs.ansible.com/ansible/2.5/user_guide/playbooks_conditionals.html
NEW QUESTION # 51
Copy /etc/fstab to /var/tmp name admin, the user1 could read, write and modify it, while user2 without any permission.
Answer:
Explanation:
# cp /etc/fstab /var/tmp/
# chgrp admin /var/tmp/fstab
# setfacl -m u:user1:rwx /var/tmp/fstab
# setfacl -m u:user2:--- /var/tmp/fstab
# ls -l
-rw-rw-r--+ 1 root admin 685 Nov 10 15:29 /var/tmp/fstab
NEW QUESTION # 52
SIMULATION
Search a String
Find out all the columns that contains the string seismic within /usr/share/dict/words, then copy all these columns to /root/lines.tx in original order, there is no blank line, all columns must be the accurate copy of the original columns.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation: grep seismic /usr/share/dict/words > /root/lines.txt
NEW QUESTION # 53
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