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RedHat EX200 Exam Practice Questions (P. 3)

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Question #11
SIMULATION -
Configure the verification mode of your host account and the password as LDAP. And it can login successfully through ldapuser40. The password is set as
"password". And the certificate can be downloaded from http://ip/dir/ldap.crt. After the user logs on the user has no host directory unless you configure the autofs in the following questions.

Correct Answer:
See explanation below.
system-config-authentication
LDAP Server: ldap//instructor.example.com (In domain form, not write IP)

OR -
# yum groupinstall directory-client (1.krb5-workstation 2.pam-krb5 3.sssd)
# system-config-authentication
1.User Account Database: LDAP
2.LDAP Search Base DN: dc=example,dc=com
3.LDAP Server: ldap://instructor.example.com (In domain form, not write IP) 4.Download CA Certificate
5.Authentication Method: LDAP password
6.Apply
getent passwd ldapuser40

Question #12
SIMULATION -
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.

Correct Answer:
See explanation below.
# 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

Question #13
SIMULATION -
Configure the system synchronous as 172.24.40.10.

Correct Answer:
See explanation below.
Graphical Interfaces:
System-->Administration-->Date & Time

OR -
# system-config-date
chatbot-img GPT-4o - Answer
To configure a system to synchronize its time with the server at IP 172.24.40.10, you must update the chrony configuration. Install chrony with `sudo yum install chrony`, then edit `/etc/chrony.conf` to include the line `server 172.24.40.10`. This specifies the server with which to synchronize. Afterward, enable and start the chronyd service using `sudo systemctl enable --now chronyd` to ensure time syncing begins immediately and persists after system reboots. The use of `iburst` is often recommended to speed up initial synchronization but is not mandatory in every scenario.

Question #14
SIMULATION -
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.)

Correct Answer:
See explanation below.
# 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)

Question #15
SIMULATION -
Create a volume group, and set 16M as a extends. And divided a volume group containing 50 extends on volume group lv, make it as ext4 file system, and mounted automatically under /mnt/data.

Correct Answer:
See explanation below.
# pvcreate /dev/sda7 /dev/sda8
# vgcreate -s 16M vg1 /dev/sda7 /dev/sda8
# lvcreate -l 50 -n lvm02
# mkfs.ext4 /dev/vg1/lvm02
# blkid /dev/vg1/lv1
# vim /etc/fstab
# mkdir -p /mnt/data
UUID=xxxxxxxx /mnt/data ext4 defaults 0 0
# vim /etc/fstab
# mount -a
# mount
(Verify)

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