[2020.4] RedHat EX200 dumps certification tips and free exam exercise questions
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Red Hat Certified System Administrator (RHCSA) exam (EX200): https://www.redhat.com/en/services/training/ex200-red-hat-certified-system-administrator-rhcsa-exam
Real and effective RedHat EX200 exam Practice Questions
QUESTION 1
Configure a default software repository for your system.
One
YUM has already provided to configure your system on http://server.domain11.example.com/pub/x86_64/Server, and
can be used normally.
Correct Answer: Check the anser in explanation.
Yum-config-manager –add-repo=http://content.example.com/rhel7.0/x86-64/dvd” is to generate a file vim
content.example.com_rhel7.0_x86_64_dvd.repo, Add a line gpgcheck=0 Yumcleanall Yumrepolist Almost 4305
packages are right, Wrong Yum Configuration will lead to some following questions cannot be worked out.
QUESTION 2
Configure autofs.
Configure the autofs automatically mount to the home directory of LDAP, as required:
server.domain11.example.com use NFS to share the home to your system. This file system contains a pre configured
home directory of user ldapuserX.
Home directory of ldapuserX is:
server.domain11.example.com /home/guests/ldapuser
Home directory of ldapuserX should automatically mount to the ldapuserX of the local /home/guests Home directory’s
write permissions must be available for users ldapuser1’s password is password
Correct Answer: Check the anser in explanation.
yum install -y autofs mkdir /home/rehome
/etc/auto.master /home/rehome/etc/auto.ldap Keep then exit cp /etc/auto.misc /etc/auto.ldap
/etc/auto.ldap ldapuserX -fstype=nfs,rw server.domain11.example.com:/home/guests/ Keep then exit systemctl start
autofs systemctl enable autofs su – ldapuserX// test
If the above solutions cannot create files or the command prompt is -bash-4.2$, it maybe exist multi-level directory, this
needs to change the server.domain11.example.com:/home/guests/ to server.domain11.example.com:/home/guests/
ldapuserX. What is multi-level directory? It means there is a directory of ldapuserX under the /home/guests/ldapuserX in
the questions. This directory is the real directory.
QUESTION 3
Add admin group and set gid=600
Correct Answer: Check the anser in explanation.
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# groupadd -g 600 admin
QUESTION 4
Add user: user1, set uid=601 Password: redhat The user\\’s login shell should be non-interactive.
Correct Answer: Check the anser in explanation.
# useradd -u 601 -s /sbin/nologin user1 # passwd user1 redhat
QUESTION 5
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.
Correct Answer: Check the anser in explanation.
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 6
Who ever creates the files/directories on a data group owner should automatically be in the same group owner as data.
Correct Answer: Check the anser in explanation.
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
QUESTION 7
Configure NTP.
Configure NTP service, Synchronize the server time, NTP server: classroom.example.com
Correct Answer: Check the anser in explanation.
Configure the client: Yum -y install chrony Vim /etc/chrony.conf Add: server classroom.example.com iburst Start:
systemctl enable chronyd systemctl restart chronyd Validate: timedatectl status
QUESTION 8
One Logical Volume named /dev/test0/testvolume1 is created. The initial Size of that disk is 100MB now you required
more 200MB. Increase the size of Logical Volume, size should be increase on online.
Correct Answer: Check the anser in explanation.
lvextend -L+200M /dev/test0/testvolume1 Use lvdisplay /dev/test0/testvolume1)
ext2online -d /dev/test0/testvolume1
lvextend command is used the increase the size of Logical Volume. Other command lvresize command also here to
resize. And to bring increased size on online we use the ext2online command.
QUESTION 9
One Logical Volume is created named as myvol under vo volume group and is mounted. The Initial Size of that Logical
Volume is 400MB. Make successfully that the size of Logical Volume 200MB without losing any data. The size of logical
volume 200MB to 210MB will be acceptable.
Correct Answer: Check the anser in explanation.
First check the size of Logical Volume: lvdisplay /dev/vo/myvol
Make sure that the filesystem is in a consistent state before reducing: # fsck -f /dev/vo/myvol
Now reduce the filesystem by 200MB. # resize2fs /dev/vo/myvol 200M
It is now possible to reduce the logical volume. #lvreduce /dev/vo/myvol -L 200M
Verify the Size of Logical Volume: lvdisplay /dev/vo/myvol
Verify that the size comes in online or not: df -h
QUESTION 10
Install the appropriate kernel update from http://server.domain11.example.com/pub/updates. The following criteria must
also be met: The updated kernel is the default kernel when the system is rebooted The original kernel remains available
and bootable on the system
Correct Answer: Check the anser in explanation.
ftp server.domain11.example.com Anonymous login ftp> cd /pub/updates ftp> ls ftp> mget kernel* ftp> bye
rpm -ivh kernel*
vim /etc/grub.conf Check the updatted kernel is the first kernel and the orginal kernel remains available. set default=0
wq!
QUESTION 11
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.
Correct Answer: Check the anser in 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
QUESTION 12
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.
Correct Answer: Check the anser in 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.
QUESTION 13
Make on /archive directory that only the user owner and group owner member can fully access.
Correct Answer: Check the anser in explanation.
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chmod 770 /archive
Verify using : ls -ld /archive Preview should be like: drwxrwx— 2 root sysuser 4096 Mar 16 18:08 /archive To change the
permission on directory we use the chmod command. According to the question that only the owner user (root) and
group member (sysuser) can fully access the directory so: chmod 770 /archive
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