RedHat EX200 Test Engine Practice Test Questions, Exam Dumps [Q85-Q100]

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RedHat EX200 Test Engine Practice Test Questions, Exam Dumps

100% Free EX200 Daily Practice Exam With 157 Questions

To prepare for the RHCSA exam, candidates need to have a good understanding of Linux fundamentals, including system administration, networking, and security. The Red Hat training program provides comprehensive training on these topics and prepares the candidates for the exam. Candidates can also take advantage of online resources and practice exams to further enhance their knowledge and skills.

The Red Hat EX200 exam is a hands-on, practical exam that requires candidates to demonstrate their ability to perform tasks on live systems rather than answering multiple-choice questions. EX200 exam consists of a series of tasks that are designed to test the candidate’s ability to configure, manage, and troubleshoot RHEL systems. The tasks are based on real-world scenarios and require the candidate to use their knowledge and skills to solve problems in a time-bound manner.

QUESTION 85
Configure a task: plan to run echo “file” command at 14:23 every day.

see explanation below.
Explanation
(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”

QUESTION 86
According the following requirements to create a local directory /common/admin.
* This directory has admin group.
* This directory has read, write and execute permissions for all admin group members.
* Other groups and users don’t have any permissions.
* All the documents or directories created in the/common/admin are automatically inherit the admin group.

see explanation below.
Explanation
mkdir -p /common/admin
chgrp admin /common/admin
chmod 2770 /common/admin

QUESTION 87
The following command is issued on two docker nodes:
docker network create –driver bridge isolated_nw
Afterwards, one container is started at each node with the parameter –network=isolated_nw. It turns out
that the containers can not interact with each other. What must be done in order to allow the containers to
interact with each other? (Choose two correct answers.)

Use a host network instead of a bridged network.

Add the option –inter-containerto the docker network createcommand.

Start the containers on the same node.

Change the –networkparameter of docker create to –network=isolated_nw,nofence.

Use an overlay network instead of a bridged network.

Explanation/Reference:
Reference https://docs.docker.com/v17.09/engine/userguide/networking/#bridge-networks

QUESTION 88
Download ftp://192.168.0.254/pub/boot.iso to /root, and mounted automatically under /media/cdrom and which take effect automatically at boot-start.

Answer see in the explanation.
Explanation/Reference:
# cd /root; wget ftp://192.168.0.254/pub/boot.iso
# mkdir -p /media/cdrom
# vim /etc/fstab
/root/boot.iso /media/cdrom iso9660 defaults,loop 0 0
# mount -a
mount [-t vfstype] [-o options] device dir

QUESTION 89
There are two different networks 192.168.0.0/24 and 192.168.1.0/24. Where 192.168.0.254 and
192.168.1.254 IP Address are assigned on Server. Verify your network settings by pinging 192.168.1.0/24 Network’s Host.

see explanation below.
Explanation
* vi /etc/sysconfing/network NETWORKING=yes HOSTNAME=station?.example.com GATEWAY=192.168.0.254 service network restart
2.vi /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
IPADDR=X.X.X.X
NETMASK=X.X.X.X
GATEWAY=192.168.0.254
ifdown eth0
ifup eth0

QUESTION 90
Please open the ip_forward, and take effect permanently.

vim /etc/sysctl.conf net.ipv4.ip_forward = 1
sysctl -w (takes effect immediately)
If no “sysctl.conf” option, use these commands:
sysctl -a |grep net.ipv4
sysctl -P net.ipv4.ip_forward = 1
sysctl -w

QUESTION 91
SIMULATION
Notes:
NFS： NFS instructor.example.com:/var/ftp/pub/rhel6/dvd
YUM： http://instructor.example.com/pub/rhel6/dvd
ldap： http：//instructor.example.com/pub/EXAMPLE-CA-CERT
Install dialog package.

yum install dialog

QUESTION 92
Create a collaborative directory/home/admins with the following characteristics:
Group ownership of /home/admins is adminuser
The directory should be readable, writable, and accessible to members of adminuser, but not to any other user. (It is understood that root has access to all files and directories on the system.) Files created in /home/admins automatically have group ownership set to the adminuser group

mkdir /home/admins
chgrp -R adminuser /home/admins
chmodg+w /home/admins
chmodg+s /home/admins

QUESTION 93
What statement is true regarding the Swarm service created by the following command?
docker service create –name myweb –network webnet –mode global nginx

It runs exactly one time in the Swarm and cannot be scaled.

It runs exactly once on each node in a Swarm.

It runs on one node by default and can be scaled to an arbitrary number of replicas.

It runs on all nodes which provide the network webnet.

It runs only on those nodes which support the network type global.

Explanation/Reference:

QUESTION 94
We are working on /data initially the size is 2GB. The /dev/test0/lvtestvolume is mount on /data. Now you required more space on /data but you already added all disks belong to physical volume. You saw that you have unallocated space around 5 GB on your harddisk. Increase the size of lvtestvolume by 5GB.

see explanation below.
* Create a partition having size 5 GB and change the syste id ‘8e’.
* use partprobe command
* pvcreate /dev/hda9 Suppose your partition number is hda9.
* vgextend test0 /dev/hda9 vgextend command add the physical disk on volume group.
* lvextend -L+5120M /dev/test0/lvtestvolume
* verify using lvdisplay /dev/test0/lvtestvolume.

QUESTION 95
Configure the permissions of /var/tmp/fstab
Copy the file /etc/fstab to /var/tmp/fstab. Configure the permissions of /var/tmp/fstab so that:
the file /var/tmp/fstab is owned by the root user.
the file /var/tmp/fstab belongs to the group root.
the file /var/tmp/fstab should not be executable by anyone.
the user natasha is able to read and write /var/tmp/fstab.
the user harry can neither write nor read /var/tmp/fstab.
all other users (current or future) have the ability to read /var/tmp/fstab.

cp -a /etc/fstab /var/tmp
cd /var/tmp
ls -l
getfacl /var/tmp/fstab
chmod ugo-x /var/tmp/fstab
[ No need to do this, there won’t be execute permission for the file by default]
# setfacl -m u:natasha:rw /var/tmp/fstab # setfacl -m u:harry:0 /var/tmp/fstab(zero)
[Read permission will be there for all the users, by default. Check it using ls -l /var/tmp/fstab] Verify by
[ ls -la /var/tmp/fstab]

QUESTION 96
You are a System administrator. Using Log files very easy to monitor the system. Now there are 50 servers running as Mail, Web, Proxy, DNS services etc. You want to centralize the logs from all servers into on LOG Server. How will you configure the LOG Server to accept logs from remote host?

see explanation below.
Explanation
By default, system accept the logs only generated from local host. To accept the Log from other host configure:
vi /etc/sysconfig/syslog SYSLOGD_OPTIONS=”-m 0 -r”
Where
-m 0 disables ‘MARK’ messages.
-r enables logging from remote machines
-x disables DNS lookups on messages received with -r
service syslog restart

QUESTION 97
One Logical Volume named lv1 is created under vg0. The Initial Size of that Logical Volume is 100MB. Now you required the size 500MB. Make successfully the size of that Logical Volume 500M without losing any data. As well as size should be increased online.

see explanation below.
Explanation
The LVM system organizes hard disks into Logical Volume (LV) groups. Essentially, physical hard disk partitions (or possibly RAID arrays) are set up in a bunch of equal sized chunks known as Physical Extents (PE). As there are several other concepts associated with the LVM system, let’s start with some basic definitions:
Physical Volume (PV) is the standard partition that you add to the LVM mix. Normally, a physical volume is a standard primary or logical partition. It can also be a RAID array.
Physical Extent (PE) is a chunk of disk space. Every PV is divided into a number of equal sized PEs. Every PE in a LV group is the same size. Different LV groups can have different sized PEs.
Logical Extent (LE) is also a chunk of disk space. Every LE is mapped to a specific PE.
Logical Volume (LV) is composed of a group of LEs. You can mount a file system such as /home and /var on an LV.
Volume Group (VG) is composed of a group of LVs. It is the organizational group for LVM. Most of the commands that you’ll use apply to a specific VG.
* Verify the size of Logical Volume: lvdisplay /dev/vg0/lv1
* Verify the Size on mounted directory: df -h or df -h mounted directory name
* Use: lvextend -L+400M /dev/vg0/lv1
* ext2online -d /dev/vg0/lv1 to bring extended size online.
* Again Verify using lvdisplay and df -h command.

QUESTION 98
SELinux must run in force mode.

/etc/sysconfig/selinux
SELINUX=enforcing

QUESTION 99
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.

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

QUESTION 100
There are two different networks, 192.168.0.0/24 and 192.168.1.0/24. Your System is in 192.168.0.0/24 Network. One RHEL6 Installed System is going to use as a Router. All required configuration is already done on Linux Server. Where 192.168.0.254 and 192.168.1.254 IP Address are assigned on that Server. How will make successfully ping to 192.168.1.0/24 Network’s Host?

vi /etc/sysconfig/network GATEWAY=192.168.0.254
OR
vi /etc/sysconf/network-scripts/ifcfg-eth0 DEVICE=eth0
BOOTPROTO=static
ONBOOT=yes
IPADDR=192.168.0.?
NETMASK=255.255.255.0
GATEWAY=192.168.0.254
service network restart
Gateway defines the way to exit the packets. According to question System working as a router for two networks have IP Address 192.168.0.254 and 192.168.1.254.

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