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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Perform basic shell scripting | - Use conditional statements, loops, and script inputs | |
| Topic 2: Deploy, configure, and maintain systems | 15% | - Manage software packages with DNF/YUM - Manage network interfaces and settings with NetworkManager/nmcli - Configure firewalld firewall rules |
| Topic 3: Create and configure file systems | 15% | - Maintain entries in /etc/fstab using UUID or labels - Manage access control lists (ACLs) - Create and mount XFS, ext4, VFAT file systems - Mount and manage network file systems (NFS, autofs) |
| Topic 4: Understand and use essential tools | 25% | - Use grep and regular expressions - Access shell prompt and issue commands with correct syntax - Create/edit text files; manage files, directories, links, permissions - Use input-output redirection - Archive, compress, unpack files using tar, gzip, bzip2 - Access remote systems via SSH |
| 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: Manage users and groups | 10% | - Configure SSH key-based authentication - Create, delete, modify users and groups - Manage password policies and sudo access |
| Topic 7: Operate running systems | 20% | - Manage logging and journaling - Schedule tasks using cron and at - Maintain accurate system time with chrony - Boot systems into different targets; manage systemd units - Manage networking and network services |
| Topic 8: Manage security | 10% | - Enforce SELinux modes, contexts, booleans, and port labeling - Restore file contexts and troubleshoot SELinux issues |
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NEW QUESTION # 57
SIMULATION
Download the document from ftp://instructor.example.com/pub/testfile, find all lines containing [abcde] and redirect to /MNT/answer document, then rearrange the order according the original content.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation: Download the file to /tmp first
grep [abcde] /tmp/testfile > /mnt/answer
NEW QUESTION # 58
According the following requirements to create user, user group and the group members:
- A group named admin.
- A user named mary, and belong to admin as the secondary group.
- A user named alice, and belong to admin as the secondary group.
- A user named bobby, bobby's login shell should be non-interactive. Bobby not belong to admin as the secondary group.
Mary, Alice, bobby users must be set "password" as the user's password.
Answer:
Explanation:
groupadd admin
useradd -G admin mary
useradd -G admin alice
useradd -s /sbin/nologin bobby
echo "password" | passwd --stdin mary
echo "password" | passwd --stdin alice
echo "password" | passwd --stdin bobby
NEW QUESTION # 59
CORRECT TEXT
Create a 2G swap partition which take effect automatically at boot-start, and it should not affect the original swap partition.
Answer:
Explanation:
# fdisk /dev/sda
p
(check Partition table)
n
(create new partition: press e to create extended partition, press p to create the main partition, and
theextended partition is further divided into logical partitions) Enter
+2G
t
l
W
partx -a /dev/sda
partprobe
mkswap /dev/sda8
Copy UUID
swapon -a
vim /etc/fstab
UUID=XXXXX swap swap defaults 0 0
(swapon -s)
NEW QUESTION # 60
13. Create a Container Image
As the user "wallah," download the Containerfile from http://classroom/Containerfile.
Do not modify the content of this file. Build an image named "pdf."
Answer:
Explanation:
Solution:
# Install container management tools
[root@node1 ~]# dnf -y install container-tools
# Execute operations as the user wallah
[root@node1 ~]# ssh wallah@localhost
# Download the container build file
[wallah@node1 ~]# wget http://classroom/Containerfile
# Log in to the image registry
[wallah@node1 ~]# podman login -u admin -p redhat321 registry.lab.example.com
# Build the container image using the Containerfile in the current directory, with the image name "pdf"
[wallah@node1 ~]# podman build -t pdf .
# View the images
[wallah@node1 ~]$ podman images
REPOSITORY TAG IMAGE ID CREATED SIZE
localhost/pdf latest 1d6e7ea71460 31 seconds ago 300 MB
registry.lab.example.com/ubi9-beta/ubi latest 28b0a4b69d9b 2 years ago 229 MB
NEW QUESTION # 61
Adjust the size of the Logical Volume.
Adjust the size of the vo Logical Volume, its file system size should be 290M. Make sure that the content of this system is complete.
Note: the partition size is rarely accurate to the same size as required, so in the range 270M to 320M is acceptable.
Answer:
Explanation:
see explanation below.
Explanation
Addition
df -hT
lvextend -L +100M /dev/vg0/vo
Lvscan
xfs_growfs /home/ //home is the mounted directory of the LVM, this step just need to do in the practice environment, and test EXT4 does not need this step.
resize2fs /dev/vg0/vo// use this command to update in examination.
df -hT
OR
Subtraction
e2fsck -f/dev/vg0/vo
umount /home
resize2fs /dev/vg0/vo // the final required partition capacity is 100M lvreduce -l 100M /dev/vg0/vo mount /dev/vg0/vo/home df -hT
NEW QUESTION # 62
......
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