EX200 Free Exam Study Guide! (Updated 110 Questions)
EX200 Dumps for RHCSA Certified Exam Questions & Answer
Skills Tested in the Exam
The Red Hat Certified System Administrator (RHCSA) exam is practical and contains real-world tasks. The skills tested in EX200 cover one’s understanding and the ability to use essential tools as well as competence in creating simple shell scripts and operating running systems. Also, one should be able to perform the configuration of local storage and file systems. Among other things, you will have to demonstrate sufficient knowledge in deploying and maintaining systems and managing basic networking. Besides, you will need to be ready to perform tasks on security and containers management without any assistance.
What Is RHCSA Exam?
To earn the Red Hat Certified System Administrator, candidates will have to pass one exam coded EX200. This test will evaluate a candidate's knowledge and abilities with system administration that is found across many different types of environments and deployment scenarios. The skills tested in this exam will act as the foundation for system administration across all Red Hat products. In particular, EX200 exam revolves around Red Hat Enterprise Linux 8.2 and is 3 hours long, with the registration fee being USD 400. When it comes to the prerequisites of this exam, it is recommended to take both the official RH124 and RH134 courses before attempting the final test. Passing EX200 will bring home the Red Hat Certified System Administrator certificate.
NEW QUESTION 58
CORRECT TEXT
Add admin group and set gid=600
Answer:
Explanation:
# groupadd -g 600 admin
NEW QUESTION 59
CORRECT TEXT
Add users: user2, user3.
The Additional group of the two users: user2, user3 is the admin group Password: redhat
Answer:
Explanation:
# useradd -G admin user2
# useradd -G admin user3
# passwd user2
redhat
# passwd user3
redhat
NEW QUESTION 60
SIMULATION
There is a local logical volumes in your system, named with common and belong to VGSRV volume group, mount to the /common directory. The definition of size is 128 MB.
Requirement:
Extend the logical volume to 190 MB without any loss of data. The size is allowed between 160-160 MB after extending.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation: lvextend -L 190M /dev/mapper/vgsrv-common resize2fs /dev/mapper/vgsrv-common
NEW QUESTION 61
Find the rows that contain abcde from file /etc/testfile, and write it to the file/tmp/testfile, and the sequence is requested as the same as /etc/testfile.
Answer:
Explanation:
Answer see in the explanation.
Explanation/Reference:
# cat /etc/testfile | while read line;
do
echo $line | grep abcde | tee -a /tmp/testfile
done
OR
grep `abcde' /etc/testfile > /tmp/testfile
NEW QUESTION 62
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:
Answer see in the explanation.
Explanation/Reference:
# 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 63
Open kmcrl value of 5 , and can verify in /proc/ cmdline
Answer:
Explanation:
see explanation below.
Explanation
# vim /boot/grub/grub.conf
kernel/vmlinuz-2.6.32-71.el6.x86_64 ro root=/dev/mapper/GLSvg-GLSrootrd_LVM_LV=GLSvg/GLSroot rd_LVM_LV=GLSvg/GLSswaprd_NO_LUKSrd_NO_MDrd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us crashkernel=auto rhgb quiet kmcrl=5 Restart to take effect and verification:
# cat /proc/cmdline
ro root=/dev/mapper/GLSvg-GLSroot rd_LVM_LV=GLSvg/GLSroot rd_LVM_LV=GLSvg/GLSswap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rhgb quiet kmcrl=5
NEW QUESTION 64
SIMULATION
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/Reference:
Explanation:
if=/dev/zero of=/swapfile bs=1M count=600 mkswap /swapfile
/etc/fstab:
/swapfile swap swap defaults 0 0 mount -a
NEW QUESTION 65
Configure the FTP service in your system, allow remote access to anonymous login and download the program by this service. Service is still running after system rebooting.
Answer:
Explanation:
see explanation below.
Explanation
yum install vsftpd
/etc/init.d/vsftpd start
chkconfig vsftpd on
NEW QUESTION 66
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.
Answer:
Explanation:
see explanation below.
Explanation
# 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
NEW QUESTION 67
SIMULATION
Create the following users, groups, and group memberships:
A group named adminuser.
A user natasha who belongs to adminuser as a secondary group A user harry who also belongs to adminuser as a secondary group.
A user sarah who does not have access to an interactive shell on the system, and who is not a member of adminuser, natasha, harry, and sarah should all have the password of redhat.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation:
groupadd sysmgrs
useradd -G sysmgrs Natasha
We can verify the newly created user by cat /etc/passwd)
# useradd -G sysmgrs harry
# useradd -s /sbin/nologin sarrh
# passwd Natasha
# passwd harry
# passwd sarrah
NEW QUESTION 68
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.
Answer:
Explanation:
Answer see in the explanation.
Explanation/Reference:
# 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
NEW QUESTION 69
Configure iptables, there are two domains in the network, the address of local domain is 172.24.0.0/16 other domain is 172.25.0.0/16, now refuse domain 172.25.0.0/16 to access the server.
Answer:
Explanation:
see explanation below.
Explanation
below
* iptables -F
* service iptables save
* iptables -A INPUT -s 172.25.0.0/16 -j REJECT
* service iptables save
* service iptables restart
NEW QUESTION 70
Make a swap partition having 100MB. Make Automatically Usable at System Boot Time.
Answer:
Explanation:
see explanation below.
* 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.
NEW QUESTION 71
Resize the logical volume vo and its filesystem to 290 MB. Make sure that the filesystem contents remain intact.
Note: Partitions are seldom exactly the same size requested, so a size within the range of 260 MB to 320 MiB is acceptable.
Answer:
Explanation:
see explanation below.
Explanation
df -hT
lvextend -L +100M /dev/vg0/vo
lvscan
xfs_growfs /home/ // home is LVM mounted directory
Note: This step is only need to do in our practice environment, you do not need to do in the real exam resize2fs /dev/vg0/vo // Use this comand to update in the real exam df -hT OR e2fsck -f/dev/vg0/vo umount /home resize2fs /dev/vg0/vo required partition capacity such as 100M lvreduce -l 100M /dev/vg0/vo mount
/dev/vg0/vo /home
df -Ht
NEW QUESTION 72
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.)
- A. Use a host network instead of a bridged network.
- B. Add the option --inter-containerto the docker network createcommand.
- C. Start the containers on the same node.
- D. Change the --networkparameter of docker create to --network=isolated_nw,nofence.
- E. Use an overlay network instead of a bridged network.
Answer: C,D
Explanation:
Explanation/Reference:
Reference https://docs.docker.com/v17.09/engine/userguide/networking/#bridge-networks
NEW QUESTION 73
Notes:
NFS NFS instructor.example.com:/var/ftp/pub/rhel6/dvd
YUM
http://instructor.example.com/pub/rhel6/dvd
Answer:
Explanation:
ldap http//instructor.example.com/pub/EXAMPLE-CA-CERT
Install dialog package.
yum install dialog
NEW QUESTION 74
Create a 2G swap partition which take effect automatically at boot-start, and it should not affect the original swap partition.
Answer:
Explanation:
see explanation below.
Explanation
# fdisk /dev/sda
p
(check Partition table)
n
(create new partition: press e to create extended partition, press p to create the main partition, and the extended partition is further divided into logical partitions) Enter
+2G t
8 I
82
W
partx -a /dev/sda
partprobe
mkswap /dev/sda8
Copy UUID
swapon -a
vim /etc/fstab
UUID=XXXXX swap swap defaults 0 0
(swapon -s)
NEW QUESTION 75
......
RedHat RHCSA EX200 Practice Test Questions, RedHat RHCSA EX200 Exam Practice Test Questions
Red Hat EX200 is a prerequisite exam associated with the Red Hat Certified System Administrator (RHCSA) certification that you need to pass if you want to become an accredited specialist who is able to perform the core system administration tasks. These individuals should know which processes are required in the Red Hat Enterprise Linux environments and what to do with them.
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