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XK0-005 Exam Dumps - CompTIA Linux+ Questions and Answers

Question # 64

A cloud engineer needs to change the secure remote login port from 22 to 49000. Which of the following files should the engineer modify to change the port number to the desired value?

Options:

A.

/etc/host.conf

B.

/etc/hostname

C.

/etc/services

D.

/etc/ssh/sshd_config

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Question # 65

A Linux system is failing to start due to issues with several critical system processes. Which of the following options can be used to boot the system into the single user mode? (Choose two.)

Options:

A.

Execute the following command from the GRUB rescue shell: mount -o remount, ro/sysroot.

B.

Interrupt the boot process in the GRUB menu and add systemd.unit=single in the kernel line.

C.

Interrupt the boot process in the GRUB menu and add systemd.unit=rescue.target in the kernel line.

D.

Interrupt the boot process in the GRUB menu and add single=user in the kernel line.

E.

Interrupt the boot process in the GRUB menu and add init=/bin/bash in the kernel line.

F.

Interrupt the boot process in the GRUB menu and add systemd.unit=single.target in the kernel line.

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Question # 66

A Linux engineer is setting the sticky bit on a directory called devops with 755 file permission. Which of the following commands will accomplish this task?

Options:

A.

chown -s 755 devops

B.

chown 1755 devops

C.

chmod -s 755 devops

D.

chmod 1755 devops

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Question # 67

A Linux administrator needs to redirect all HTTP traffic temporarily to the new proxy server 192.0.2.25 on port 3128. Which of the following commands will accomplish this task?

Options:

A.

iptables -t nat -D PREROUTING -p tcp --sport 80 -j DNAT - -to-destination 192.0.2.25:3128

B.

iptables -t nat -A PREROUTING -p top --dport 81 -j DNAT –-to-destination 192.0.2.25:3129

C.

iptables -t nat -I PREROUTING -p top --sport 80 -j DNAT –-to-destination 192.0.2.25:3129

D.

iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT –-to-destination 192.0.2.25:3128

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Question # 68

A systems administrator is tasked with installing GRUB on the legacy MBR of the SATA hard drive. Which of the following commands will help the administrator accomplish this task?

Options:

A.

grub-install /dev/hda

B.

grub-install /dev/sda

C.

grub-install /dev/sr0

D.

grub-install /dev/hd0,0

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Question # 69

A newly created container has been unable to start properly, and a Linux administrator is analyzing the cause of the failure. Which of the following will allow the administrator to determine the FIRST command that is executed inside the container right after it starts?

Options:

A.

docker export

B.

docker info

C.

docker start

D.

docker inspect

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Question # 70

A Linux administrator would like to use systemd to schedule a job to run every two hours. The administrator creates timer and service definitions and restarts the server to load these new configurations. After the restart, the administrator checks the log file and notices that the job is only running daily. Which of the following is MOST likely causing the issue?

Options:

A.

The checkdiskspace.service is not running.

B.

The checkdiskspace.service needs to be enabled.

C.

The OnCalendar schedule is incorrect in the timer definition.

D.

The system-daemon services need to be reloaded.

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Question # 71

A systems administrator is implementing a new service task with systems at startup and needs to execute a script entitled test.sh with the following content:

The administrator tries to run the script after making it executable with chmod +x; however, the script will not run. Which of the following should the administrator do to address this issue? (Choose two.)

Options:

A.

Add #!/bin/bash to the bottom of the script.

B.

Create a unit file for the new service in /etc/systemd/system/ with the name helpme.service in the location.

C.

Add #!//bin/bash to the top of the script.

D.

Restart the computer to enable the new service.

E.

Create a unit file for the new service in /etc/init.d with the name helpme.service in the location.

F.

Shut down the computer to enable the new service.

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Question # 72

A junior administrator is trying to set up a passwordless SSH connection to one of the servers. The administrator follows the instructions and puts the key in the authorized_key file at the server, but the administrator is still asked to provide a password during the connection.

Given the following output:

Which of the following commands would resolve the issue and allow an SSH connection to be established without a password?

Options:

A.

restorecon -rv .ssh/authorized_key

B.

mv .ssh/authorized_key .ssh/authorized_keys

C.

systemct1 restart sshd.service

D.

chmod 600 mv .ssh/authorized_key

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Question # 73

A Linux administrator is implementing a CI/CD process for the company’s internal accounting web application. Which of the following best defines the purpose of this process?

Options:

A.

To automate the process of building, testing, and deploying application components

B.

To perform security penetration tests on deployed applications to identify vulnerabilities

C.

To formalize the approval process of application releases and configuration changes

D.

To leverage code to document the infrastructure, configurations, and dependencies

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Exam Code: XK0-005
Exam Name: CompTIA Linux+ Exam
Last Update: Jul 31, 2025
Questions: 487
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