2024 Valid EX200 Real Exam Questions (Updated) 100% Dumps & Practice Exam
[UPDATED 2024] RedHat EX200 Questions Prepare with Free Demo of PDF
How to study the Red Hat EX200 Exam
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NEW QUESTION # 19
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 # 20
How does Prometheus gather information about monitored hosts and services?
- A. It uses HTTP to retrieve JSON encoded metrics from the monitored objects.
- B. It queries a relational database for metrics written to the database by monitored applications.
- C. It opens a webhook where monitored applications have to submit various metrics.
- D. It runs scripts on the Prometheus server which perform tests and return various metrics.
- E. It implements the ICMP and SNMP protocols to ping and query remote services.
Answer: D
Explanation:
Explanation/Reference:
Reference https://dzone.com/articles/monitoring-with-prometheus
NEW QUESTION # 21
/data Directory is shared from the server1.example.com server. Mount the shared directory that:
a. when user try to access, automatically should mount
b. when user doesn't use mounted directory should unmount automatically after 50 seconds.
c. shared directory should mount on /mnt/data on your machine.
Answer:
Explanation:
see explanation below.
Explanation
1. vi /etc/auto.master
/mnt /etc /auto.misc --timeout=50
* vi /etc/auto.misc
* data -rw,soft,intr server1.example.com:/data
* service autofs restart
* chkconfig autofs on
When you mount the other filesystem, you should unmount the mounted filesystem, Automount feature of linux helps to mount at access time and after certain seconds, when user unaccess the mounted directory, automatically unmount the filesystem.
/etc/auto.master is the master configuration file for autofs service. When you start the service, it reads the mount point as defined in /etc/auto.master.
NEW QUESTION # 22
Create a swap space, set the size is 600 MB, and make it be mounted automatically after rebooting the system (permanent mount).
Answer:
Explanation:
if=/dev/zero of=/swapfile bs=1M count=600 mkswap /swapfile
/etc/fstab:
/swapfile swap swap defaults 0 0 mount -a
NEW QUESTION # 23
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 # 24
Make on data that only the user owner and group owner member can fully access.
Answer:
Explanation:
see explanation below.
Explanation
* chmod 770 /data
* Verify using : ls -ld /data Preview should be like:
drwxrwx--- 2 root sysadmin 4096 Mar 16 18:08 /data
To change the permission on directory we use the chmod command.
According to the question that only the owner user (root) and group member (sysadmin) can fully access the directory so: chmod 770 /data
NEW QUESTION # 25
Your System is configured in 192.168.0.0/24 Network and your nameserver is 192.168.0.254. Make successfully resolve to server1.example.com.
Answer:
Explanation:
see explanation below.
Explanation
nameserver is specified in question,
1. Vi /etc/resolv.conf
nameserver 192.168.0.254
2. host server1.example.com
NEW QUESTION # 26
According the following requirements, configure autofs service and automatically mount to user's home directory in the ldap domain.
- Instructor.example.com (192.168.0.254) has shared /home/guests/ldapuserX home directory to your system by over NFS export, X is your hostname number.
- LdapuserX's home directory is exist in the instructor.example.com: /home/ guests/ldapuserX
- LdapuserX's home directory must be able to automatically mount to /home/ guests/ldapuserX in your system.
- Home directory have write permissions for the corresponding user.
However, you can log on to the ldapuser1 - ldapuser99 users after verification. But you can only get your corresponding ldapuser users. If your system's hostname is server1.example.com, you can only get ldapuser1's home directory.
Answer:
Explanation:
mkdir -p /home/guests
cat /etc/auto.master:
/home/guests /etc/auto.ldap
cat /etc/auto.ldap:
ldapuser1 -rw instructor.example.com:/home/guests/ldapuser1
automatically mount all the user's home directory #* -rw instructor.example.com:/home/guests/&
NEW QUESTION # 27
Configure the NTP service in your system.
Answer:
Explanation:
system-config-date &
NEW QUESTION # 28
CORRECT TEXT
Upgrading the kernel as 2.6.36.7.1, and configure the system to Start the default kernel, keep the old kernel available.
Answer:
Explanation:
# cat /etc/grub.conf
# cd /boot
# lftp it
# get dr/dom/kernel-xxxx.rpm
# rpm -ivh kernel-xxxx.rpm
# vim /etc/grub.conf
default=0
NEW QUESTION # 29
If a Dockerfilereferences the container's base image without a specific version tag, which tag of that image
is used to create the container?
- A. current
- B. nightly
- C. latest
- D. lts
- E. default
Answer: C
Explanation:
Explanation
Explanation/Reference:
Reference https://docs.docker.com/engine/reference/commandline/build/
NEW QUESTION # 30
Which of the following information is contained in the output of git status? (Choose three correct answers.)
- A. Changed files that will be part of the next commit.
- B. Locked files which cannot be edited until the lock is released.
- C. Unchanged files which have not been edited locally.
- D. Untracked files which are not subject to version control.
- E. Changed files that will not be part of the next commit.
Answer: A,C,D
NEW QUESTION # 31
SIMULATION
Configure your Host Name, IP Address, Gateway and DNS.
Host name: dtop5.dn.ws.com
IP Address: 172.28.10.5/4
Gateway: 172.28.10.1
DNS: 172.28.10.1
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation:
1. Configure Host Name
vim /etc/sysconfig/network NETWORKING=yes HOSTNAME=dtop5.dn.ws.com GATEWAY=172.28.10.1
2. Configure IP Address, Gateway and DNS
Configure the network by Network Manager:
Note: Please remember to choose two options:
Connect automatically
Available to all users
Click "Apply", save and exit, and restart your network services:
# Service network restart
3. Validate these profiles:
a) Check gateway: # vim / etc / sysconfig / network
NETWORKING=yes
HOSTNAME=dtop5.dn.ws.com
GATEWAY=172.28.10.1
b) Check Host Name: # vim /etc/hosts
c) Check DNS: # vim /etc/resolv.conf
# Generated by NetworkManager
Search dn.ws.com
Nameserver 172.28.10.1
d) Check Gateway: # vim /etc/sysconfig/network-scripts/ifcfg-eth0
NEW QUESTION # 32
CORRECT TEXT
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:
# 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 # 33
SIMULATION
Open kmcrl value of 5 , and can verify in /proc/ cmdline
Answer:
Explanation:
See explanation below.
Explanation/Reference:
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 # 34
SIMULATION
The user authentication has been provided by ldap domain in 192.168.0.254. According the following requirements to get ldapuser.
-LdapuserX must be able to login your system, X is your hostname number. But the ldapuser's home directory cannot be mounted, until you realize automatically mount by autofs server.
- All ldap user's password is "password".
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation: system-config-authentication &
NEW QUESTION # 35
A recently installed application writes log data to /opt/app/log/info.log. If Filebeat is already installed and
set up for communication with a remote Logstash, what has to be done in order to submit the log data of the
new application to Logstash?
- A. Replace /opt/app/log/info.logby a symbolic link to /dev/filebeatand restart the new application.
- B. Add a new cron job that invokes filebeat -i /opt/app/log/info.logperiodically.
- C. Configure logrotate to execute filebeat -I /opt/app/log/info.log 0after each rotation of /opt/
app/log/info.log. - D. Add the log file to the pathoption within the logprospector in the Filebeat configuration and restart
Filebeat. - E. Add an additional input channel with the option source => "/opt/app/log/info.log"to the
Logstash configuration.
Answer: A
NEW QUESTION # 36
Add user: user1, set uid=601
Password: redhat
The user's login shell should be non-interactive.
Answer:
Explanation:
see explanation below.
Explanation
# useradd -u 601 -s /sbin/nologin user1
# passwd user1
redhat
NEW QUESTION # 37
Configure a task: plan to run echo hello command at 14:23 every day.
Answer:
Explanation:
Answer see in the explanation.
Explanation/Reference:
# which echo
# crontab -e
23 14 * * * /bin/echo hello
# crontab -l (Verify)
NEW QUESTION # 38
SIMULATION
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.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
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
NEW QUESTION # 39
SIMULATION
Configure the NTP service in your system.
Answer:
Explanation:
See explanation below.
Explanation/Reference:
Explanation: system-config-date &
NEW QUESTION # 40
Install the Kernel Upgrade.
Install suitable kernel update from:
http://server.domain11.example.com/pub/updates.
Following requirements must be met:
Updated kernel used as the default kernel of system start-up.
The original kernel is still valid and can be guided when system starts up.
Answer:
Explanation:
see explanation below.
Explanation
Using the browser open the URL in the question, download kernel file to root or home directory.
uname -r// check the current kernel version
rpm -ivh kernel-*.rpm
vi /boot/grub.conf// check
Some questions are: Install and upgrade the kernel as required. To ensure that grub2 is the default item for startup.
Yum
repo : http://content.example.com/rhel7.0/x86-64/errata
OR
uname -r // check kernel
Yum-config-manager
--add-repo="http://content.example.com/rhel7.0/x86-64/ errata"
Yum clean all
Yum list kernel// install directly
Yum -y install kernel// stuck with it, do not pipe! Please do not pipe!
Default enable new kernel grub2-editenv list// check
Modify grub2-set-default "kernel full name"
Grub2-mkconfig -o/boot/grub2/grub.cfg// Refresh
NEW QUESTION # 41
What does the command packer validate template.jsondo?
- A. The command verifies that the file template.jsonis a syntactically correct and complete Packer
template. - B. The command verifies that all existing artifacts generated by template.jsonhave their original
checksums. - C. The command verifies that the latest build of the template can be run without downloading additional
images or artifacts. - D. The command verifies that all source images referenced in template.jsonare available and have valid
cryptographic signatures. - E. The command verifies that images generated previously by template.jsonstill use the most recent
source images.
Answer: A
Explanation:
Explanation/Reference:
Reference https://www.packer.io/docs/commands/validate.html
NEW QUESTION # 42
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:
# 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 # 43
Some users home directory is shared from your system. Using showmount -e localhost command, the shared directory is not shown. Make access the shared users home directory.
Answer:
Explanation:
Verify the File whether Shared or not ? : cat /etc/exports
Start the nfs service: service nfs start
Start the portmap service: service portmap start
Make automatically start the nfs service on next reboot: chkconfig nfs on Make automatically start the portmap service on next reboot: chkconfig portmap on Verify either sharing or not: showmount -e localhost Check that default firewall is running on system?
If running flush the iptables using iptables -F and stop the iptables service.
NEW QUESTION # 44
......
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