CompTIA Linux+ XK0-004 Exam Questions - Newly Updated XK0-004 Practice Exam [2022]

CompTIA Linux+ XK0-004 Exam Questions – Newly Updated XK0-004 Practice Exam [2022]

Regina2022-01-21T07:20:35+00:00

CompTIA Linux+ certification candidates are only required to pass XK0-004 exam, which validates the skills of IT professionals with hands-on experience configuring, monitoring, and supporting servers running the Linux operating system. ITExamShop newly updated XK0-004 practice exam to make sure that candidates can practice the new CompTIA Linux+ XK0-004 exam questions and answers for passing CompTIA Linux+ certification exam successfully. The most updated and the latest XK0-004 exam questions of ITExamShop covering XK0-004 exam objectives, which could be the best preparation materials online.

Before Starting TO Use Updated XK0-004 Practice Exam, Candidates Can Read XK0-004 Free Questions Below First

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1. A Linux administrator is testing connectivity to a remote host on a shared terminal. The administrator wants to allow other users to access the terminal while the command is executing.

Which of the following commands should the administrator use?

bg ping remotehost

fg ping remotehost

ping remotehost < results

ping remotehost &

2. Which of the following commands would show the default printer on a Linux system?

lpr

lpq

lpstat

lspci

3. An administrator is using a configuration management tool to define a system’s configuration. The defined configuration can be used to provision new systems, rebuild existing systems, or roll back systems to their original baseline configurations.

Which of the following BEST describes what the administrator is doing?

Build automation

Containerization

Infrastructure as code

Test automation

4. A technical support engineer receives a ticket from a user who is trying to create a 1KB file in the /tmp directory and is getting the following error No space left on device. The support engineer checks the /tmp directory, and it has 20GB of free space.

Which of the following BEST describes a possible cause for this error?

The /tmp directory is not mounted.

The filesystem is formatted with a 4MB block size.

the filesystem ran out of inodes.

The /tmp directory has been set with an immutable attribute.

5. The development team has automated their software build process so each time a change is submitted to the source code repository, a new software build is compiled. They are requesting that the Linux operations team look into automating the deployment of the software build into the test environment.

Which of the following is the benefit to the development team for implementing deployment automation?

To ensure the build commits are also deployed to the test environment

To enable notifications when builds are deployed to the test environment

To ensure software builds in test are not accidentally deployed to production

To streamline the deployment process for deploying builds into test environments

6. An organization wants to consolidate its entire user information in centralized storage using an X.500-based protocol.

Which of the following protocols should be used for this implementation?

RADIUS

LDAP

DNS

DHCP

7. Which of the following will provide a list of all flash, external, internal, and SSD drives?

lspci

lsmod

lsblk

lsusb

8. Joe, a user, is unable to log in to the server and contracts the systems administrator to look into the issue.

The administrator examines the /etc/passwd file and discovers the following entry:

joe:x:505:505::/home/joe:/bin/false

Which of the following commands should the administrator execute to resolve the problem?

usermod Cs /bin/bash joe

passwd Cu joe

useradd Cs /bin/bash joe

chage CE -1 joe

9. When a technician plugs a USB flash drive into a server, the drive does not mount automatically.

Which of the following commands will provide the information needed to mount the drive manually?

modinfo

lshw

lspci

mount

10. Which of the following would be the BEST solution for a systems administrator to access the graphical user environment of a Linux machine remotely?

VNC

KDE

X11

RPC

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11. An issue was discovered on a testing branch of a Git repository. A file was inadvertently modified and needs to be reverted to the master branch version.

Which of the following is the BEST option to resolve the issue?

git branch -b master file

git merge master testing

git stash branch master

git checkout master -- file

12. 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

Option B

Option C

Option D

13. A systems administration team has decided to their systems as immutable instances. They keep the desired state of each of their systems in version control and apply automation whenever they provision a new instance. If there is an issue with one of their servers, instead of troubleshooting the issue they terminate the instance and rebuild it using automation.

Which of the following is this an example of?

Inventory

Orchestration

Infrastructure as code

Agentless deployment

14. During the final step of staging new Linux hardware, GRUB2 is installed to the system drive.

Which of the following BEST describes the role of GRUB2 in a new Linux installation?

It provides a menu for creating administrator task shortcuts.

It provides a menu for running special shell scripts.

It provides a method to partition a hard drive.

It provides a method to pass parameters to the Linux kernel on startup.

15. The following represents a partial listing of a user’s .bashrc file:

HISTSIZE=800

HISTFILESIZE=1000

umask 2002

HISTCONTROL=ignoreboth

When the user opens a terminal, an error message appears:

Octal number out of range

Which of the following lines in the partial .bashrc should be modified to prevent the error from occurring?

HISTSIZE=800

HISTFILESIZE=1000

umask 2002

HISTCONTROL=ignoreboth

16. A Linux systems administrator is setting up SSH access with PKI for several using their newly created RSA keys.

Which of the following MOST securely achieves this task?

Use curl to copy each user’s public key file to the respective system

Use cp to copy each user’s public key file to the respective system

Use ssh-copy-id to copy each user’s public key file to the respective system

Use ssh-copy-id to copy each user’s private key file to the respective system

17. An administrator is troubleshooting an application that has failed to start after the server was rebooted.

Noticing the data volume is not mounted, the administrator attempts to mount it and receives this error:

Upon checking the logical volume status, the administrator receives this information:

Which of the following can be said about the data logical volume, and how can this problem be resolved?

The logical volume is not active. The administrator should make it active with lvchange - ay /dev/ datavg/datalv and then mount it.

The logical volume file system has become corrupted. The administrator should repair it with xfs_repair/dev/datavg/datalv and then mount it.

The logical volume is OK but the /dev special files are missing. The administrator should recreate them by running /dev/MAKEDE

The file system is read-only. The administrator should remount it as read-write with the command mount - o remount.rw /data.

18. Users are reporting collaborate.company.com is inaccessible from the user VLAN, but there is no issue connecting to the system’s web page from the DMZ.

Given the following outputs from commands run on the system:

Which of the following explains why users are unable to access the system from the user VLAN, and how can the administrator remediate this issue?

Users cannot access the system because the IP subnet mask is /24. The remediation for this issue is to set the IP subnet mask to /16.

Users cannot access the system because the DNS server has the incorrect IP address. The remediation for this issue is to edit the DNS configuration to point to the correct I

Users cannot access the system because the connectivity port is running on the incorrect I

The remediation for this issue is to edit the configuration file to listen on all interfaces.

Users cannot access the system because the default gateway has the wrong interface. The remediation for this issue is to set the default gateway to the proper interface.

19. The Apache web server was recently installed on a Debian/Ubuntu server. The web server fails and a review of log messages on another partition reveals the installation was not completed properly due to lack of disk space.

After clearing the files, the systems administrator has requested the installation to be performed again.

Which of the following command lines will perform this task? (Choose two.)

apt-get install apache2

apt-get --purge remove acache2

apt-get --reinstall install apache2

apt-get --reinstall apache2

20. A Linux administrator implemented a new HTTP server using the default configuration. None of the users on the network can access the server.

If there is no problem on the network or with the users’ workstations, which of the following steps will BEST analyze and resolve the issue?

Run netstat to ensure the port is correctly bound, and configure the firewall to allow access on ports 80 and 443

Run route to ensure the port is correctly bound, and configure the firewall to allow access on ports 80 and 443

Run netcat to ensure the port is correctly bound, and configure a static route to the web to allow access on ports 80 and 443

Run route to ensure the port is correctly bound, and configure SELinux to allow access on ports 80 and 443

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21. A customer reports a Linux production server is randomly suffering degraded performance.

The administrator verifies that the sysstat package is installed and enabled on the server.

Which of the following would BEST determine what is causing the impact on performance?

Create a cron job that runs uptime every 15 minutes to collect historical data of the load average of the system.

Leave a ping running overnight from a laptop to the server to catch any latency encountered.

Analyze the data in /var/log/sa using the sar command.

Open a screen session and run top inside of it. Let it run over night and collect the data.

22. 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?

cd /etcln Cs /usr/share/zoneinfo/US/Pacific localtime

cd /usr/localln Cs /usr/share/zoneinfo/US/Pacific zoneinfo

cd /etc/localln Cs /usr/share/zoneinfo/US/Pacific localtime

cd /usr/share/localln Cs /usr/share/zoneinfo/US/Pacific localectl

23. An administrator needs to see the type of CPU that a server is running.

Which of the following files contains this information?

/proc/cpuinfo

/etc/devices/info.conf

/dev/proc/cpu

/sys/dev/cpuinfo

24. Joe, a user, asks a systems administrator to schedule the daily execution of a custom script.

Which of the following commands will allow the systems administrator to set up Joe’s cron job?

crontab -r -u joe

crontab -e -u joe

crontab -n -u joe

crontab -l -u joe

25. 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?

chmod 000 /var/www/html/old_reports

chgrp root /var/www/html/old_reports

chown apache /var/www/html/old_reports

setenforce apache /var/www/html/old_reports

26. Users in the payroll department are not configured to use DNS due to security concerns. The users ask the junior Linux administrator to configure their workstations to access the payroll server at 192.168.204.11 by the name “Payroll”.

Which of the following commands should the administrator issue to meet this request?

echo “nameserver 192.168.204.11 #Payroll” >> /etc/resolv.conf

echo “net.ipv4.ip_dynaddr=192.168.204.11 Payroll” >> /etc/sysctl.conf

echo “192.168.204.11 Payroll” >> /etc/hosts

echo ‘IPADDR=”192.168.204.11” #Payroll’ >> /etc/network/interface

27. A storage administrator in a virtualized environment has been told by a user that there is no space left on the volume to which the user can write. However, a check reveals that there is 20GB of unused space.

Which of the following explains the discrepancy?

The drive is not formatted

The drive is thin provisioned

The drive is thick provision eager zeroed

The drive space is overallocated

28. A user wants to configure the application “myapp” to start on runlevels 2, 3, 4, and 5 every time the system starts.

Which of the following commands will accomplish this task?

chkconfig --level 2345 myapp on

systemctl myapp on 2345

chkcinfig myapp --levels 2-5

systemctl --levels 2345 on

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CompTIA Linux+ XK0-004 Exam Questions – Newly Updated XK0-004 Practice Exam [2022]

Before Starting TO Use Updated XK0-004 Practice Exam, Candidates Can Read XK0-004 Free Questions Below First

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