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| Section | Weight | Objectives |
|---|---|---|
| Configure local storage | 15% | - Create and manage LVM physical volumes, volume groups, logical volumes - Configure swap space - List, create, delete partitions and GPT/MBR layouts |
| Create and configure file systems | 15% | - Create and mount XFS, ext4, VFAT file systems - Mount and manage network file systems (NFS, autofs) - Maintain entries in /etc/fstab using UUID or labels - Manage access control lists (ACLs) |
| Perform basic shell scripting | - Use conditional statements, loops, and script inputs | |
| Manage security | 10% | - Enforce SELinux modes, contexts, booleans, and port labeling - Restore file contexts and troubleshoot SELinux issues |
| Operate running systems | 20% | - Boot systems into different targets; manage systemd units - Maintain accurate system time with chrony - Schedule tasks using cron and at - Manage logging and journaling - Manage networking and network services |
| Manage users and groups | 10% | - Create, delete, modify users and groups - Configure SSH key-based authentication - Manage password policies and sudo access |
| Deploy, configure, and maintain systems | 15% | - Configure firewalld firewall rules - Manage software packages with DNF/YUM - Manage network interfaces and settings with NetworkManager/nmcli |
| Understand and use essential tools | 25% | - Use input-output redirection - Access shell prompt and issue commands with correct syntax - Archive, compress, unpack files using tar, gzip, bzip2 - Create/edit text files; manage files, directories, links, permissions - Use grep and regular expressions - Access remote systems via SSH |
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NEW QUESTION # 18
SELinux must be running in the Enforcing mode.
Answer:
Explanation:
see explanation below.
Explanation
getenforce // Check the current mode of SELinux // SELinux runs in enforcing mode // Check getenforce 1 getenforce vim /etc/selinux/config selinux=enforcing // To temporarily enable SELinux wg sestatus
NEW QUESTION # 19
SIMULATION
Create a backup
Create a backup file named /root/backup.tar.bz2, contains the content of /usr/local, tar must use bzip2 to compress.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation:
cd /usr/local
tar -jcvf /root/backup.tar.bz2
mkdir /test
tar -jxvf /root/backup.tar.bz2 -C /test// Decompression to check the content is the same as the /usr/loca after If the questions require to use gzip to compress. change -j to -z.
NEW QUESTION # 20
04. Create User Accounts
Create the following user accounts, ensuring the checkboxes are enabled:
- Group named sysmgrs
- User natasha, belonging to the sysmgrs group as a secondary group
- User harry, belonging to the sysmgrs group as a secondary group
- User sarah, with no access to interactive shell on the system and not a member of sysmgrs
- Passwords for natasha, harry, and sarah should all be "flectrag".
Answer:
Explanation:
Solution:
[root@node1 ~]# groupadd sysmgrs
[root@node1 ~]# useradd -G sysmgrs natasha
[root@node1 ~]# useradd -G sysmgrs harry
[root@node1 ~]# useradd -s /bin/false sarah
[root@node1 ~]# echo tianyun |passwd --stdin natasha
[root@node1 ~]# echo tianyun |passwd --stdin harry
[root@node1 ~]# echo tianyun |passwd --stdin sarah
NEW QUESTION # 21
SIMULATION
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:
See explanation below.
Explanation/Reference:
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 # 22
Configure the host to boot into multi-user.target by default.
Answer:
Explanation:
See the solution below in Explanation.
Explanation:
Solution:
systemctl set-default multi-user.target
systemctl get-default
Detailed Explanation:
* set-default changes the boot target persistently.
* get-default verifies the result.
* multi-user.target is the standard non-graphical multi-user boot target.
NEW QUESTION # 23
......
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