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Latest update CompTIA xk0-004 exam questions and answers online practice test

QUESTION 1
A junior systems administrator is scanning archive.tar files with an antivirus scanner. The administrator is given the
following tasks:
1.
List all files that are in the archive.tar files.
2.
Extract all files from the archive.tar files.
Which of the following actions should be performed to meet these requirements? (Choose two.)
A. tar -tvf archive.tar
B. tar -xf archive.tar
C. tar -A archive.tar
D. tar -av archive.tar
E. tar -r archive.tar
F. tar -uvz archive.tar
Correct Answer: AB
Reference: https://linuxize.com/post/how-to-create-and-extract-archives-using-the-tar-command-in-linux/
Exam B

 

QUESTION 2
Which of the following commands will let a Linux user know the PCI devices that are installed in the system?
A. cat /proc/devices/pci
B. lspci
C. lsdev
D. cat /proc/sys/dev
Correct Answer: B
Reference: https://opensource.com/article/19/9/linux-commands-hardware-information

 

QUESTION 3
A Linux storage administrator wants to create a logical volume group. Which of the following commands is required to
start the process?
A. pvcreate
B. vgcreate
C. lvcreate
D. mkfs.xfs
Correct Answer: B
Reference: https://www.thegeekstuff.com/2010/08/how-to-create-lvm/

 

QUESTION 4
A Linux administrator needs to remove a USB drive from a system. The unmount command fails, stating the device is
busy. Which of the following commands will show the reason for this error?
A. lsusb | grep /mnt/usb
B. mount | grep /mnt/usb
C. ps aux | grep /mnt/usb
D. lsof | grep /mnt/usb
Correct Answer: D
Reference: https://www.systutorials.com/force-linux-unmount-filesystem-reporting-device-busy/

 

QUESTION 5
A Linux administrator is using a public cloud provider to host servers for a company\\’s website. Using the provider\\’s
tools, the administrator wrote a JSON file to define how to deploy the servers. Which of the following techniques did the
administrator use?
A. Infrastructure as code
B. Build automation
C. Platform as a service
D. Automated configuration
Correct Answer: B
Reference: https://cloud.google.com/cloud-build/docs/build-config

 

QUESTION 6
An administrator receives the following message on a remote server: Cannot open display. Which of the following
should the administrator have used to log in to the server?
A. xrdp -h server.company.com
B. ssh -X server.company.com
C. xvnc server.company.com
D. rdesktop server.company.com
Correct Answer: B

 

QUESTION 7
All users are reporting that they cannot connect to the SFTP server. The administrator runs a scan:comptia xk0-004 exam questions q7

Which of the following would allow the administrator to fix the problem?
A. Allow SFTP connections on port 22 using /etc/sysconfig/iptables.
B. Allow SFTP connections on port 20 and 21 using /etc/sysconfig/iptables.
C. Allow SFTP connections on port 25 using /etc/sysconfig/iptables.
D. Allow SFTP connections on port 1456 using /etc/sysconfig/iptables.
Correct Answer: A

 

QUESTION 8
A Linux systems administrator needs to set permissions on an application with the following parameters:
The owner of the application should be able to read, write, and execute the application. Members of the group should be
able to read and execute the application. Everyone else should not have access to the application. Which of the
following commands would BEST accomplish these tasks?
A. chmod 710
B. chmod 730
C. chmod 750
D. chmod 760
Correct Answer: D

 

QUESTION 9
An administrator is logged into a server remotely and wants to determine if the system is a VM. Which of the following
commands would assist with this?
A. dmesg
B. ps
C. top
D. vmstat
Correct Answer: D
Reference: https://ostechnix.com/check-linux-system-physical-virtual-machine/

 

QUESTION 10
A Linux administrator wants to configure log messages of critical or higher severity levels from the cron utility to be
logged to the console. Which of the following will accomplish this objective?
A. Edit the /etc/logrotate.d/cron file to include the line cron.emerg.* /dev/console
B. Edit the /etc/rsyslog.conf file to include the line cron.emerg.* /dev/console
C. Edit the /etc/logrotate.conf file to include the line cron.emerg.* /dev/console
D. Edit the /etc/rsyslog.d/conf file to include the line cron.emerg.* /dev/console
Correct Answer: B

 

QUESTION 11
A Linux administrator must identify a user with high disk usage. The administrator runs the # du ? /home/* command
and gets the following output:comptia xk0-004 exam questions q11

Based on the output, User3 has the largest amount of disk space used. To clean up the file space, the administrator
needs to find out more information about the specific files that are using the most disk space. Which of the following
commands will accomplish this task?
A. df –k /home/User/files.txt
B. du –a /home/User3/*
C. du –sh /home/User/
D. find . –name /home/User3 -print
Correct Answer: C
Reference: https://unix.stackexchange.com/questions/37221/finding-files-that-use-the-most-disk-space

 

QUESTION 12
A configuration management tool running every minute is enforcing the service HTTPd to be started.
To perform maintenance, which of the following series of commands can be used to prevent the service from being
started?
A. systemctl stop httpd andand systemctl mask httpd
B. systemctl disable httpd andand systemctl mask httpd
C. systemctl stop httpd andand systemctl hide httpd
D. systemctl disable httpd andand systemctl hide httpd
Correct Answer: A

 

QUESTION 13
A junior systems administrator has generated a PKI certificate for SSH sessions. The administrator would like to
configure authentication without passwords to remote systems. Which of the following should the administrator
perform?
A. Add the content of id_rsa.pub file to the remote system ~/.ssh/authorized_keys location.
B. Add the content of id_rsa file to the remote system ~/.ssh/authorized_keys location.
C. Add the content of id_rsa file to the remote system ~/.ssh/known_hosts location.
D. Add the content of id_rsa.pub file to the remote system ~/.ssh/known_hosts location.
Correct Answer: A
Reference: https://kb.iu.edu/d/aews

 

QUESTION 14
A junior Linux administrator is performing version control on a Git repository. The administrator is given a list of
tasks to complete:
List the currently installed Git release.
Show the status reporting of the clone.
Which of the following commands would allow the administrator to complete these tasks? (Choose two.)
A. git clone –progress
B. git clone –recursive
C. git –help
D. git clone –dissociate
E. git –version
F. git clone –shared
Correct Answer: AC

 

QUESTION 15
A Linux administrator wants to obtain a list of files and subdirectories in the /etc directory that contain the word
“services”. Once the files and subdirectories are discovered, they should be listed alphabetically in the
/var/tmp/foundservices file. Which of the following shell scripts will accomplish this task?
A. #/bin/bashfind /etc –name services | sort > /var/tmp/foundservices
B. #/bin/bashlocate /etc –sort –name services > /var/tmp/foundservices
C. #/bin/bashfind –name services –sort /var/tmp/foundservices
Correct Answer: B


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The latest updated CompTIA XK0-004 Exam Practice Questions and Answers Online Practice Test is free to share from Lead4Pass (Q1-Q13)

QUESTION 1
An administrator needs to create a shared directory in which all users are able, write, and execute its content but none
of the regular users are able to delete any content. Which of the following permissions should be applied to this shared
directory?
A. rwxrwxrwt
B. rwxrwxrws
C. rwxrwxrwx
D. rwxrwxrw*
Correct Answer: C

 

QUESTION 2
A Linux administrator wants to obtain a list of files and subdirectories in the /etc directory that contain the word
“services”. Once the files and subdirectories are discovered, they should be listed alphabetically in the
/var/tmp/foundservices file. Which of the following shell scripts will accomplish this task?
A. #/bin/bashfind /etc –name services | sort > /var/tmp/foundservices
B. #/bin/bashlocate /etc –sort –name services > /var/tmp/foundservices
C. #/bin/bashfind –name services –sort /var/tmp/foundservices
Correct Answer: B

 

QUESTION 3
Which of the following commands would show the default printer on a Linux system?
A. lpr
B. lpq
C. lpstat
D. lspci
Correct Answer: B
Reference: https://superuser.com/questions/123576/show-default-linux-printer

 

QUESTION 4
An administrator notices a directory on a web server named /var/www/html/old_reports that should no longer be
accessible on the web. Which of the following commands will accomplish this task?
A. chmod 000 /var/www/html/old_reports
B. chgrp root /var/www/html/old_reports
C. chown apache /var/www/html/old_reports
D. setenforce apache /var/www/html/old_reports
Correct Answer: D

 

QUESTION 5
A Linux administrator needs to switch from text mode to GUI. Which of the following run levels will start the GUI by
default?
A. Runlevel 3
B. Runlevel 4
C. Runlevel 5 D. Runlevel 6
Correct Answer: C
Reference: http://www.linfo.org/runlevel_def.html

 

QUESTION 6
DRAG DROP
The lead Linux has added a disk, /dev/sdd, to a VM that is running out of disk space. Place the following steps in the
correct order from first (1) to last (4) to add the disk to the existing LVM.
Select and Place:

[2021.3] lead4pass xk0-004 practice test q6

Correct Answer:

[2021.3] lead4pass xk0-004 practice test q6-1

 

QUESTION 7
A junior Linux administrator is installing a new application with CPU architecture requirements that have the following
specifications: x64 bit 3.0GHz speed Minimum quad-core The administrator wants to leverage existing equipment but is
unsure whether the requirements of these systems are adequate. The administrator issues the following command
cat/proc/cpuinfo. The output of the command is as follows:[2021.3] lead4pass xk0-004 practice test q7

Which of the following is the recommended course of action the administrator should take based on this output?
A. Install the application, as the system meets the application requirements
B. Procure new equipment that matches the recommended specifications
C. Recompile the Linux kernel to support the installation.
D. Reconfigure lib modules to support the new application.
Correct Answer: A

 

QUESTION 8
After starting a long-running script, a systems administrator needs to verify the frequency of what is filling up the /var
partition and kill it because it is consuming too much space. Which of the following is the correct sequence given only a
terminal is available?

A. 1. CTRL-C2. bg3. watch df /var4. CTRL-C5. fg6. CTRL-Z
B. 1. CTRL-C2. fg3. watch df /var4. CTRL-Z5. bg6. CTRL-Z
C. 1. CTRL-Z2. bg3. watch df /var4. CTRL-C5. fg6. CTRL-C
D. 1. CTRL-Z2. bg3. watch df /var4. CTRL-Z5. fg6. CTRL-C
Correct Answer: D

 

QUESTION 9
A Linux administrator needs to schedule a cron job to run at 1:15 p.m. every Friday to report the amount of free disk
space on the system and to send the output to a file named “freespace”. Which of the following would meet this
requirement?
A. 13 15 * * 5 df > /freespace
B. 15 13 * * 5 df > /freespace
C. 15 1 * * 6 df > /freespace
D. 15 13 6 * * df > /freespace
Correct Answer: A

 

QUESTION 10
Joe, a member of the accounting group on a Linux system, is unable to write a file called “taxes” in the accounting
shared directory. The ownership and permissions on the directory and file are as follows: accounting drwxrw-r– user =
ann, group = accounting taxes -rw-r–r– , user = ann, group = accounting
Which of the following commands would allow Joe to write to the file? (Choose two.)
A. chmod g+x accounting
B. chmod 777 taxes
C. chgrp taxes accounting
D. chgrp accounting taxes
E. chmod 774 accounting
F. chmod u+x accounting
Correct Answer: AF
Reference: https://www.pluralsight.com/blog/it-ops/linux-file-permissions

 

QUESTION 11
A junior Linux administrator needs to ensure service will start on system boot. Which of the following commands
should be used to accomplish this task?
A. chkconfig on
B. systemctl bootup
C. service enable
D. crontab install
Correct Answer: A
Reference: https://geekflare.com/how-to-auto-start-services-on-boot-in-linux/

 

QUESTION 12
A systems administrator is enabling quotas on the /home directory of a Linux server. The administrator makes the
appropriate edits to the /etc/fstab file and attempts to issue the commands to enable quotas on the desired directory.
However, the administrator receives an error message stating the filesystem does not support quotas. Which of the
following commands should the administrator perform to proceed?
A. mount o remount /home
B. quotacheck -cg
C. edquota /home
D. quotaon /home
Correct Answer: D
Reference: https://www.tecmint.com/set-filesystem-disk-quotas-on-ubuntu/

 

QUESTION 13
A networked has been crashing intermittently. A Linux administrator would like to write a shell script that will attempt to
ping the server and email an alert if the server fails to respond. The script will later be scheduled via cron job. Which of
the following scripts would BEST accomplish this task?[2021.3] lead4pass xk0-004 practice test q13

A. Option A
B. Option B
C. Option C
D. Option D
Correct Answer: D


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