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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Manage users and groups | 10% | - Create, delete, modify users and groups - Manage password policies and sudo access - Configure SSH key-based authentication |
| Topic 2: Perform basic shell scripting | - Use conditional statements, loops, and script inputs | |
| Topic 3: Understand and use essential tools | 25% | - Archive, compress, unpack files using tar, gzip, bzip2 - Use input-output redirection - Use grep and regular expressions - Access shell prompt and issue commands with correct syntax - Access remote systems via SSH - Create/edit text files; manage files, directories, links, permissions |
| Topic 4: Create and configure file systems | 15% | - Mount and manage network file systems (NFS, autofs) - Maintain entries in /etc/fstab using UUID or labels - Manage access control lists (ACLs) - Create and mount XFS, ext4, VFAT file systems |
| Topic 5: Configure local storage | 15% | - Create and manage LVM physical volumes, volume groups, logical volumes - List, create, delete partitions and GPT/MBR layouts - Configure swap space |
| Topic 6: Operate running systems | 20% | - Schedule tasks using cron and at - Manage networking and network services - Manage logging and journaling - Boot systems into different targets; manage systemd units - Maintain accurate system time with chrony |
| Topic 7: Deploy, configure, and maintain systems | 15% | - Manage network interfaces and settings with NetworkManager/nmcli - Manage software packages with DNF/YUM - Configure firewalld firewall rules |
| Topic 8: Manage security | 10% | - Restore file contexts and troubleshoot SELinux issues - Enforce SELinux modes, contexts, booleans, and port labeling |
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NEW QUESTION # 37
11. Find String
Find all lines containing the string "ng" in the file /usr/share/xml/iso-codes/iso_639_3.xml.
Save copies of all these lines to /root/list in the root directory.
/root/list must not contain empty lines, and all lines must be exact copies of the original lines in /usr/share/xml/iso-codes/iso_639_3.xml.
Answer:
Explanation:
Solution:
[root@node1 ~]# grep ng /usr/share/xml/iso-codes/iso_639_3.xml
[root@node1 ~]# grep ng /usr/share/xml/iso-codes/iso_639_3.xml > /root/list
# Verification
[root@node1 ~]# cat /root/list
NEW QUESTION # 38
Add sudo Permission Configuration
Allow members of the sysmgrs group to use sudo without entering a password.
Answer:
Explanation:
[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 # 39
What implications does container virtualization have for DevOps? (Choose two answers.)
Answer: B,C
Explanation:
Explanation/Reference:
Reference http://anandmanisankar.com/posts/container-docker-PaaS-microservices/
NEW QUESTION # 40
The firewall must be open.
Answer:
Explanation:
/etc/init.d/iptables start
iptables -F
iptables -X
iptables -Z
/etc/init.d/iptables save
chkconfig iptables on
NEW QUESTION # 41
Configure autofs to make sure after login successfully, it has the home directory autofs, which is shared as /rhome/ldapuser40 at the ip: 172.24.40.10. and it also requires that, other ldap users can use the home directory normally.
Answer:
Explanation:
Answer see in the explanation.
Explanation/Reference:
# chkconfig autofs on
# cd /etc/
# vim /etc/auto.master
/rhome /etc/auto.ldap
# cp auto.misc auto.ldap
# vim auto.ladp
ldapuser40 -rw,soft,intr 172.24.40.10:/rhome/ldapuser40
* -rw,soft,intr 172.16.40.10:/rhome/&
# service autofs stop
# server autofs start
# showmount -e 172.24.40.10
# su - ladpuser40
NEW QUESTION # 42
......
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