EX200 Pre-Exam Practice Tests (Updated 157 Questions) [Q63-Q78]

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EX200 Pre-Exam Practice Tests | (Updated 157 Questions)

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Red Hat Certified Engineer (EX200) confirms the ability to provide advanced technical guidance for reimplementations of existing complex Red Hat Enterprise Linux 6 systems. Regularly engaged in providing technical support for an enterprise-class Red Hat Enterprise Linux system. Focus on system administration, network administration, storage administration, and server management which are also covered in our Red Hat EX200 Dumps. Recommended for candidates who want to stay current with the latest products and technologies in the Red Hat portfolio. Professionalism, integrity, and commitment to professional standards.

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Red Hat EX200 Exam Reference

Q63. How is cloud-init integrated with a managed system image?

cloud-init provides the cloud-init-workercommand which has to be invoked periodically within the
running instance.

cloud-init provides systemd units which must be included in several stages of the booting process of the
instance.

cloud-init provides its own startup mechanism which replaces the instance’s original init system, such as
systemd.

cloud-init provides a Linux kernel module that must be included and loaded in the instance’s initramfs.

cloud-init provides the cloud-init-daemonservice which is launched during startup and keeps the
instance in sync with the desired configuration.

Q64. Which of the following Ansible tasks copies the file example.txtto a manage system?
– rsync:

src: example.txt
dst: /tmp/example.txt
– copy:

src: example.txt
dest: /tmp/example.txt
– retrieve:

src: example.txt
dest: /tmp/example.txt
– cp:

source: example.txt
dst: /tmp/example.txt
– transfer:

src: example.txt
dest: /tmp/example.txt

Q65. SIMULATION
Create a logical volume
Create a new logical volume as required:
Name the logical volume as database, belongs to datastore of the volume group, size is 50 PE.
Expansion size of each volume in volume group datastore is 16MB.
Use ext3 to format this new logical volume, this logical volume should automatically mount to /mnt/ database

See explanation below.
Explanation/Reference:
Explanation: fdisk -cu /dev/vda// Create a 1G partition, modified when needed 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
Restart and check all the questions requirements.

Q66. Configure a task: plan to run echo “file” command at 14:23 every day.

Answer see in the explanation.
Explanation/Reference:
(a) Created as administrator
# crontab -u natasha -e
23 14 * * * /bin/echo “file”
(b)Created as natasha
# su – natasha
$ crontab -e
23 14 * * * /bin/echo “file”

Q67. Part 2 (on Node2 Server)
Task 4 [Managing Logical Volumes]
Resize the logical volume, lvrz and reduce filesystem to 4600 MiB. Make sure the the filesystem contents remain intact with mount point /datarz (Note: partitions are seldom exactly the size requested, so anything within the range of 4200MiB to 4900MiB is acceptable)

* [root@node2 ~]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
vdb 252:16 0 5G 0 disk
└─vdb1 252:17 0 4.2G 0 part
└─vgrz-lvrz 253:2 0 4.1G 0 lvm /datarz
vdc 252:32 0 5G 0 disk
└─vdc1 252:33 0 4.4G 0 part
└─datavg-datalv 253:3 0 3.9G 0 lvm /data
vdd 252:48 0 5G 0 disk
vde 252:64 0 10G 0 disk
[root@node2 ~]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
lvrz vgrz -wi-ao—- 4.10g
[root@node2 ~]# vgs
VG #PV #LV #SN Attr VSize VFree
vgrz 1 1 0 wz–n- <4.15g 48.00m
[root@node2 ~]# parted /dev/vdb print
Number Start End Size Type File system Flags
1 1049kB 4456MB 4455MB primary lvm
* [root@node2 ~]# df -hT
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/vgrz-lvrz ext4 4.0G 17M 3.8G 1% /datarz
[root@node2 ~]# parted /dev/vdb mkpart primary 4456MiB 5100MiB
[root@node2 ~]# parted /dev/vdb set 2 lvm on
[root@node2 ~]# udevadm settle
[root@node2 ~]# pvcreate /dev/vdb2
Physical volume “/dev/vdb2” successfully created.
* [root@node2 ~]# vgextend vgrz /dev/vdb2
Volume group “vgrz” successfully extended
[root@node2 ~]# lvextend -r -L 4600M /dev/vgrz/lvrz
Size of logical volume vgrz/lvrz changed from 4.10 GiB (1050 extents) to 4.49 GiB (1150 extents).
Logical volume vgrz/lvrz successfully resized.
[root@node2 ~]# resize2fs /dev/vgrz/lvrz
[root@node2 ~]# df -hT
Filesystem Type Size Used Avail Use% Mounted on
/dev/mapper/vgrz-lvrz ext4 4.4G 17M 4.2G 1% /datarz

Q68. Create a volume group, and set 8M as a extends. Divided a volume group containing 50 extends on volume group lv (lvshare), make it as ext4 file system, and mounted automatically under /mnt/dat a. And the size of the floating range should set between 380M and 400M.

# fdisk
# partprobe
# pvcreate /dev/vda6
# vgcreate -s 8M vg1 /dev/vda6 -s
# lvcreate -n lvshare -l 50 vg1 -l
# mkfs.ext4 /dev/vg1/lvshare
# mkdir -p /mnt/data
# vim /etc/fstab
/dev/vg1/lvshare /mnt/data ext4 defaults 0 0
# mount -a
# df -h

Q69. Create one partitions having size 100MB and mount it on data.

see explanation below.
Explanation
1. Use fdisk /dev/hda to create new partition.
2. Type n For New partitions.
3. It will ask for Logical or Primary Partitions. Press l for logical.
4. It will ask for the Starting Cylinder: Use the Default by pressing Enter Key.
5. Type the Size: +100M you can specify either Last cylinder of size here.
6. Press P to verify the partitions lists and remember the partitions name.
7. Press w to write on partitions table.
8. Either Reboot or use partprobe command.
9. Use mkfs -t ext3 /dev/hda?
OR
mke2fs -j /dev/hda? To create ext3 filesystem.
vi /etc/fstab
Write:
/dev/hda? /data ext3 defaults 1 2
Verify by mounting on current Sessions also: mount /dev/hda? /data

Q70. A
YUM repository has been provided at http://server.domain11.example.com/pub/x86_64/Server.
Configure your system to use this location as a default repository.

see explanation below.
Explanation
vim/etc/yum.repos/base.repo
[base]
name=base
baseurl
http://server.domain11.example.com/pub/x86_64/Server
gpgcheck=0
enable=1
Save and Exit
Use yum list for validation, the configuration is correct if list the package information. If the Yum configuration is not correct then maybe cannot answer the following questions.

Q71. SIMULATION
Make a swap partition having 100MB. Make Automatically Usable at System Boot Time.

See explanation below.
Explanation/Reference:
Explanation:
Use fdisk /dev/hda ->To create new partition.
Type n-> For New partition
It will ask for Logical or Primary Partitions. Press l for logical.
It will ask for the Starting Cylinder: Use the Default by pressing Enter Key.
Type the Size: +100M ->You can Specify either Last cylinder of Size here.
Press P to verify the partitions lists and remember the partitions name. Default System ID is 83 that means Linux Native.
Type t to change the System ID of partition.
Type Partition Number
Type 82 that means Linux Swap.
Press w to write on partitions table.
Either Reboot or use partprobe command.
mkswap /dev/hda? ->To create Swap File system on partition.
swapon /dev/hda? ->To enable the Swap space from partition.
free -m ->Verify Either Swap is enabled or not.
vi /etc/fstab/dev/hda? swap swap defaults 0 0
Reboot the System and verify that swap is automatically enabled or not.

Q72. Configure a task: plan to run echo hello command at 14:23 every day.

Answer see in the explanation.
Explanation/Reference:
# which echo
# crontab -e
23 14 * * * /bin/echo hello
# crontab -l (Verify)

Q73. Create a user named alex, and the user id should be 1234, and the password should be alex111.

see explanation below.
Explanation
# useradd -u 1234 alex
# passwd alex
alex111
alex111
OR
echo alex111|passwd -stdin alex

Q74. SIMULATION
Configure a user account.
Create a user iar，uid is 3400. Password is redhat

See explanation below.
Explanation/Reference:
Explanation: useradd -u 3400 iar
passwd iar

Q75. Who ever creates the files/directories on a data group owner should automatically be in the same group owner as data.

1. chmod g+s /data
2. Verify using: ls -ld /data
Permission should be like this: drwxrws— 2 root sysadmin 4096 Mar 16 18:08 /data If SGID bit is set on directory then who every users creates the files on directory group owner automatically the owner of parent directory. To set the SGID bit: chmod g+s directory To Remove the SGID bit: chmod g-s directory

Q76. Create a Shared Directory.
Create a shared directory /home/admins, make it has the following characteristics:
/home/admins belongs to group adminuser
This directory can be read and written by members of group adminuser Any files created in /home/ admin, group automatically set as adminuser.

see explanation below.
Explanation
mkdir /home/admins
chgrp -R adminuser /home/admins
chmodg+w /home/admins
chmodg+s /home/admins

Q77. Configure User Account
Configure the user account “manalo” with the user ID 3533. The password for this user should be “flectrag”.

[root@node1 ~]# useradd -u 3533 manalo
[root@node1 ~]# echo flectrag | passwd –stdin manalo

Q78. Part 1 (on Node1 Server)
Task 5 [Controlling Access to Files with ACLs]
Copy the file /etc/fstab to /var/tmp. Configure the following permissions on /var/tmp/fstab.
The file /var/tmp/fstab is owned by root user
The file /var/tmp/fstab is belongs to the root group
The file /var/tmp/fstab should be executable by anyone
The user harry is able to read and write on /var/tmp/fstab
The user natasha can neither read or write on /var/tmp/fstab
All other users (Current or future) have the ability to read /var/tmp/fstab

* [root@node1 ~]# cp -p /etc/fstab /var/tmp/
[root@node1 ~]# ls -lrt /etc/fstab
[root@node1 ~]# ls -lrt /var/tmp/fstab
[root@node1 ~]# chmod a+x /var/tmp/fstab
[root@node1 ~]# getfacl /var/tmp/fstab
[root@node1 ~]# setfacl -m u:harry:rw- /var/tmp/fstab
[root@node1 ~]# setfacl -m u:natasha:— /var/tmp/fstab
[root@node1 ~]# getfacl /var/tmp/fstab
getfacl: Removing leading ‘/’ from absolute path names
# file: var/tmp/fstab
# owner: root
# group: root
user::rwx
user:harry:rw-
user:natasha:—
group::r-x
mask::rwx
other::r-x
* [root@node1 ~]# su – natasha
[natasha@node1 ~]$ cat /var/tmp/fstab
cat: /var/tmp/fstab: Permission denied

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