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Latest CompTIA XK0-004 question answers

QUESTION 1
An administrator receives a warning about a file system filling up, and then identifies a large file located at
/tmp/largelogfile. The administrator deletes the file, but no space is recovered on the file system. Which of the following
commands would BEST assists the administrator in identifying the problem?
A. lsof | grep largelogfile
B. pkill /tmp/largelogfile
C. pgrep largelogfile
D. ps –ef | grep largelogfile
Correct Answer: A
Reference: https://access.redhat.com/solutions/2316

QUESTION 2
An engineer is working on a production application deployment that requires changing a web application property file
called server.property that is managed by the Git version control system. A cloned copy of the remote repository in
which the server.property file exists is on the local desktop computer. The engineer makes appropriate changes to the
files, saves it as server.property, and executes git commit ? “changed the property file” server.property. Which of the
following commands did the engineer fail to perform?
A. git init server.property
B. git merge server.property
C. git add server.property
D. git push server.property
Correct Answer: D
Reference: https://www.earthdatascience.org/workshops/intro-version-control-git/basic-git-commands/

QUESTION 3
Which of the following is the purpose of the monitoring server role?
A. To aggregate web traffic to watch which websites employees are visiting
B. To collect status and performance information about the servers in an environment
C. To provide user authentication services to a network
D. To provide real-time analysis of potential threats to the organization
Correct Answer: B

……

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CompTIA XK0-004 question from Youtube

Latest CompTIA XK0-004 practice test question answers 1-13

QUESTION 1
A user, jsmith, needs access to database files located on a server. Which of the following will add jsmith to the “dba”
group and preserve existing group memberships?
A. usermod –a –G dba jsmith
B. usermod –g dba jsmith
C. useradd –g dba jsmith
D. groupmod dba –u jsmith
Correct Answer: AC
According to the reference given below. Both AC is correct. Reference: https://www.cyberciti.biz/faq/howto-linux-adduser-to-group/

QUESTION 2
A systems administrator notices a large number of autoloaded device modules are no longer needed and decides to do
a cleanup of them. Which of the following commands will accomplish this task?
A. rmmod -c
B. depmod -r
C. insmod -c
D. modprobe -r
Correct Answer: D
Reference: http://ccrma.stanford.edu/planetccrma/man/man8/modprobe.8.html

QUESTION 3
A Linux administration is using a Linux system as a router. During the tests, the administrator discovers that IP packets
are not being sent between the configured interfaces. Which of the following commands enables this feature for IPv4
networks?
A. cat /proc/sys/net/ipv4/ip_route > 1
B. echo “1” > /proc/sys/net/ipv4/ip_forward
C. echo “1” > /proc/sys/net/ipv4/ip_route
D. echo “1” > /proc/sys/net/ipv4/ip_net
Correct Answer: B

QUESTION 4
A systems administrator must clean up all application files in the directory /var/log/app. However, the company\\’s
security policy requires the files to be kept on the backup server for one year. The Linux server has only the tar and
bzip2 packages installed. Which of the following commands will package and compress the files?
A. tar –zcvf applicationfiles.tar.bz2 /var/log/app/*
B. tar –jcvf applicationfiles.tar.bz2 /var/log/app/*
C. tar –cvf applicationfiles.tar.bz2 /var/log/app/*
D. tar –xvf applicationfiles.tar.bz2 /var/log/app/*
Correct Answer: C

QUESTION 5
A junior Linux administrator is setting up system-wide configuration settings. The goal is to ensure the PATH
environment variable includes the following locations for all users who log into a Linux system.

The administrator issues the following commands at the terminal: Respectively, the output of these commands is as
follows:

Given this output, which of the following would be the BEST action for the administrator to perform to address this
issue?
A. Update the /etc/profile.d file using a text editor, navigate to the PATH element add the missing locations, and run the
bash_completion.sh script to update the changes.
B. Update the /etc/profile file using a text editor, navigate to the PATH element, add the missing locations and run the .
/etc/profile command to update the changes.
C. Update the /etc/profile.d file using a text editor, navigate to the PATH element, add the missing locations, and reboot
to update the changes.
D. Update the /etc/profile file using a text editor navigate to the PATH element, add the missing locations, and restart
the bash process to update the changes.
Correct Answer: B

QUESTION 6
An administrator needs to look at a log for an application on a systemd-based system. There is no log for this
application in /var/log. Which of the following is another way to view the application log on this system?
A. tail -f /var/log/secure
B. journalctl –u application
C. systemctl application.service
D. watch /var/lib/application/
Correct Answer: C

QUESTION 7
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?

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

QUESTION 8
A systems administrator is configuring options on a newly installed Linux VM that will be deployed to the Pacific time
zone. Which of the following sets of commands should the administrator execute to accurately configure the correct time
settings?
A. cd /etcln –s /usr/share/zoneinfo/US/Pacific localtime
B. cd /usr/localln –s /usr/share/zoneinfo/US/Pacific zoneinfo
C. cd /etc/localln –s /usr/share/zoneinfo/US/Pacific localtime
D. cd /usr/share/localln –s /usr/share/zoneinfo/US/Pacific localectl
Correct Answer: A

QUESTION 9
A systems administrator needs to install a new piece of hardware that requires a new driver. The driver should be
manually installed. Which of the following describes the order of commands required to obtain module information,
install the module, and check the log for any errors during module installation?
A. lsmod, modprobe, modinfo
B. modinfo, insmod, modprobe
C. modinfo, insmod, dmesg
D. lsmod, insmod, dmesg
Correct Answer: A

QUESTION 10
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:

QUESTION 11
A user wants to list the lines of a log, adding a correlative number at the beginning of each line separated by a set of dashes from the actual message. Which of the following scripts will complete this task? 

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

QUESTION 12
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 13
A Linux administrator is setting up a testing environment and needs to connect to a separate testing server using the
production server name. The administrator needs to override the hostname that the DNS is returning in order to use the
test environment. Which of the following commands should be run on each of the testing systems to BEST meet this
goal?
A. # hostnamectl set-hostname “192.168.1.100 production.company.com”
B. # grep –i IP “${ip addr show} production.company.com” > /etc/resolv.conf
C. # ip addr add 192.168.1.100/24 dev eth0 andand rndc reload production.company.com
D. # echo “192.168.1.100 production.company.com” >> /etc/hosts
Correct Answer: A
Reference: https://access.redhat.com/documentation/enus/red_hat_enterprise_linux/7/html/networking_guide/sec_configuring_host_names_using_hostna mectl

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