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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Manage security | 10% | - Enforce SELinux modes, contexts, booleans, and port labeling - Restore file contexts and troubleshoot SELinux issues |
| 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: Perform basic shell scripting | - Use conditional statements, loops, and script inputs | |
| Topic 4: Understand and use essential tools | 25% | - Use grep and regular expressions - Use input-output redirection - Create/edit text files; manage files, directories, links, permissions - Access shell prompt and issue commands with correct syntax - Access remote systems via SSH - Archive, compress, unpack files using tar, gzip, bzip2 |
| Topic 5: Manage users and groups | 10% | - Create, delete, modify users and groups - Manage password policies and sudo access - Configure SSH key-based authentication |
| Topic 6: Create and configure file systems | 15% | - Manage access control lists (ACLs) - Create and mount XFS, ext4, VFAT file systems - Maintain entries in /etc/fstab using UUID or labels - Mount and manage network file systems (NFS, autofs) |
| Topic 7: Operate running systems | 20% | - Boot systems into different targets; manage systemd units - Manage logging and journaling - Manage networking and network services - Schedule tasks using cron and at - Maintain accurate system time with chrony |
| Topic 8: Configure local storage | 15% | - List, create, delete partitions and GPT/MBR layouts - Configure swap space - Create and manage LVM physical volumes, volume groups, logical volumes |
>> EX200 Sample Questions Answers <<
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NEW QUESTION # 59
Create a new logical volume according to the following requirements:
The logical volume is named database and belongs to the datastore volume group and has a size of 50 extents.
Logical volumes in the datastore volume group should have an extent size of 16 MB.
Format the new logical volume with a ext3 filesystem.
The logical volume should be automatically mounted under /mnt/database at system boot time.
Answer:
Explanation:
see explanation below.
Explanation
fdisk -cu /dev/vda
partx -a /dev/vda
pvcreate /dev/vdax
vgcreate datastore /dev/vdax -s 16M
lvcreate-l 50 -n database datastore
mkfs.ext3 /dev/datastore/database
mkdir /mnt/database
mount /dev/datastore/database /mnt/database/ df -Th
vi /etc/fstab
/dev/datastore /database /mnt/database/ ext3 defaults 0 0 mount -a
NEW QUESTION # 60
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 # 61
CORRECT TEXT
Change the logical volume capacity named vo from 190M to 300M. and the size of the floating range should set between 280 and 320. (This logical volume has been mounted in advance.)
Answer:
Explanation:
# vgdisplay
(Check the capacity of vg, if the capacity is not enough, need to create pv , vgextend , lvextend)
# lvdisplay (Check lv)
# lvextend -L +110M /dev/vg2/lv2
# resize2fs /dev/vg2/lv2
mount -a
(Verify)
------------------------------------------------------------------------------- (Decrease lvm)
# umount /media
# fsck -f /dev/vg2/lv2
# resize2fs -f /dev/vg2/lv2 100M
# lvreduce -L 100M /dev/vg2/lv2
# mount -a
# lvdisplay (Verify)
OR
# e2fsck -f /dev/vg1/lvm02
# resize2fs -f /dev/vg1/lvm02
# mount /dev/vg1/lvm01 /mnt
# lvreduce -L 1G -n /dev/vg1/lvm02
# lvdisplay (Verify)
NEW QUESTION # 62
Create a swap space, set the size is 600 MB, and make it be mounted automatically after rebooting the system (permanent mount).
Answer:
Explanation:
see explanation below.
Explanation
* if=/dev/zero of=/swapfile bs=1M count=600 mkswap /swapfile
/etc/fstab:
/swapfile swap swap defaults 0 0 mount -a
NEW QUESTION # 63
15. Add sudo Permission Configuration
Allow members of the sysmgrs group to use sudo without entering a password.
Answer:
Explanation:
Solution:
[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 # 64
......
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