Download CompTIA Linux+ Certification Exam.XK0-005.ExamTopics.2025-12-01.336q.vcex

Vendor: CompTIA
Exam Code: XK0-005
Exam Name: CompTIA Linux+ Certification Exam
Date: Dec 01, 2025
File Size: 7 MB

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Demo Questions

Question 1
A Linux systems administrator is setting up a new web server and getting 404 - NOT FOUND errors while trying to access the web server pages from the browser. While working on the diagnosis of this issue, the Linux systems administrator executes the following commands:
Which of the following commands will BEST resolve this issue?
  1. sed -i 's/SELINUX=enforcing/SELINUX=disabled/' /etc/selinux/config
  2. restorecon -R -v /var/www/html
  3. setenforce 0
  4. setsebool -P httpd_can_network_connect_db on
Correct answer: B
Explanation:
B: 3 - Mosted
B: 3 - Mosted
Question 2
A Linux administrator is trying to remove the ACL from the file /home/user/data. txt but receives the following error message:
Given the following analysis:
Which of the following is causing the error message?
  1. The administrator is not using a highly privileged account.
  2. The filesystem is mounted with the wrong options.
  3. SELinux file context is denying the ACL changes.
  4. File attributes are preventing file modification.
Correct answer: D
Explanation:
C: 1D: 6 - Mosted
C: 1D: 6 - Mosted
Question 3
A Linux administrator is installing a web server and needs to check whether web traffic has already been allowed through the firewall. Which of the following commands should the administrator use to accomplish this task?
  1. firewalld query-service-http
  2. firewall-cmd --check-service http
  3. firewall-cmd --query-service http
  4. firewalld --check-service http
Correct answer: C
Question 4
A Linux administrator needs to resolve a service that has failed to start. The administrator runs the following command:
The following output is returned
Which of the following is MOST likely the issue?
  1. The service does not have permissions to read write the startupfile.
  2. The service startupfile size cannot be 81k.
  3. The service startupfile cannot be owned by root.
  4. The service startupfile should not be owned by the root group.
Correct answer: A
Explanation:
A: 6 - MostedC: 1
A: 6 - MostedC: 1
Question 5
A junior Linux administrator is tasked with installing an application. The installation guide states the application should only be installed in a run level 5 environment.
Which of the following commands would ensure the server is set to runlevel 5?
  1. systemctl isolate multi-user.target
  2. systemctl isolate graphical.target
  3. systemctl isolate network.target
  4. systemctl isolate basic.target
Correct answer: B
Question 6
A Linux administrator has set up a new DNS forwarder and is configuring all internal servers to use the new forwarder to look up external DNS requests. The administrator needs to modify the firewall on the server for the DNS forwarder to allow the internal servers to communicate to it and make the changes persistent between server reboots. Which of the following commands should be run on the DNS forwarder server to accomplish this task?
  1. ufw allow out dns
  2. systemctl reload firewalld
  3. iptables -A OUTPUT -p udp -m udp -dport 53 -j ACCEPT
  4. firewall-cmd --zone=public --add-port=53/udp --permanent
Correct answer: D
Explanation:
A: 1D: 4 - Mosted
A: 1D: 4 - Mosted
Question 7
A Linux administrator has installed a web server, a database server, and a web application on a server. The web application should be active in order to render the web pages. After the administrator restarts the server, the website displays the following message in the browser: Error establishing a database connection. The Linux administrator reviews the following relevant output from the systemd init files:
The administrator needs to ensure that the database is available before the web application is started. Which of the following should the administrator add to the HTTP server .service file to accomplish this task?
  1. TRIGGERS=mariadb.service
  2. ONFAILURE=mariadb.service
  3. WANTEDBY=mariadb.service
  4. REQUIRES=mariadb.service
Correct answer: D
Explanation:
D: 5 - Mosted
D: 5 - Mosted
Question 8
A Linux administrator has physically added a new RAID adapter to a system. Which of the following commands should the Linux administrator run to confirm that the device has been recognized? (Choose two.)
  1. rmmod
  2. ls -ll /etc
  3. lshw -class disk
  4. pvdisplay
  5. rmdir /dev
  6. dmesg
Correct answer: CF
Explanation:
CF: 4 - Mosted
CF: 4 - Mosted
Question 9
As part of the requirements for installing a new application, the swappiness parameter needs to be changed to 0. This change needs to persist across reboots and be applied immediately. A Linux systems administrator is performing this change. Which of the following steps should the administrator complete to accomplish this task?
  1. echo "vm.swappiness=0" >> /etc/sysctl.conf && sysctl -p
  2. echo "vm.swappiness=0" >> /proc/meminfo && sysctl -a
  3. sysctl -v >> /proc/meminfo && echo "vm.swapiness=0"
  4. sysctl -h "vm.swapiness=0" && echo /etc/vmswapiness
Correct answer: A
Explanation:
A: 2 - Mosted
A: 2 - Mosted
Question 10
A systems administrator wants to list all local accounts in which the UID is greater than 500. Which of the following commands will give the correct output?
  1. find /etc/passwd -size +500
  2. cut -d: -f1 /etc/passwd > 500
  3. awk -F: '$3 > 500 {print $1}' /etc/passwd
  4. sed '/UID/' /etc/passwd < 500
Correct answer: C
Explanation:
C: 5 - Mosted
C: 5 - Mosted
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