Free XK0-005 Exam Braindumps - New 2024 CompTIA Pratice Exam [Q28-Q49]

Rate this post

Free XK0-005 Exam Braindumps – New 2024 CompTIA Pratice Exam

Practice Test for XK0-005 Certification Real 2024 Mock Exam

CompTIA XK0-005, also known as CompTIA Linux+ Certification, is a globally recognized certification exam that validates the candidate’s knowledge and skills in Linux systems administration. CompTIA Linux+ Certification Exam certification exam is intended for IT professionals with a basic understanding of Linux systems and commands. CompTIA Linux+ Certification Exam certification exam covers topics such as system architecture, Linux installation and package management, command-line operations, user and group management, networking, and security.

QUESTION 28
An administrator would like to list all current containers, regardless of their running state. Which of the following commands would allow the administrator to accomplish this task?

docker ps -a

docker list

docker image ls

docker inspect image

QUESTION 29
An administrator deployed a Linux server that is running a web application on port 6379/tcp.
SELinux is in enforcing mode based on organization policies.
The port is open on the firewall.
Users who are trying to connect to a local instance of the web application receive Error 13, Permission denied.
The administrator ran some commands that resulted in the following output:

Which of the following commands should be used to resolve the issue?

semanage port -d -t http_port_t -p tcp 6379

semanage port -a -t http_port_t -p tcp 6379

semanage port -a http_port_t -p top 6379

semanage port -l -t http_port_tcp 6379

QUESTION 30
A Linux administrator needs to determine whether a hostname is in the DNS. Which of the following would supply the information that is needed?

nslookup

rsync

netstat

host

QUESTION 31
A Linux system is getting an error indicating the root filesystem is full. Which of the following commands should be used by the systems administrator to resolve this issue? (Choose three.)

df -h /

fdisk -1 /dev/sdb

growpart /dev/mapper/rootvg-rootlv

pvcreate /dev/sdb

lvresize -L +10G -r /dev/mapper/rootvg-rootlv

lsblk /dev/sda

parted -l /dev/mapper/rootvg-rootlv

vgextend /dev/rootvg /dev/sdb

Explanation
The administrator should use the following three commands to resolve the issue of the root filesystem being full:
* df -h /. This command will show the disk usage of the root filesystem in a human-readable format.
The df command is a tool for reporting file system disk space usage. The -h option displays the sizes in powers of 1024 (e.g., 1K, 234M, 2G). The / specifies the root filesystem. The command df -h / will
* show the total size, used space, available space, and percentage of the root filesystem. This command will help the administrator identify the problem and plan the solution.
* growpart /dev/mapper/rootvg-rootlv. This command will grow the partition that contains the root filesystem to the maximum size available. The growpart command is a tool for resizing partitions on Linux systems. The /dev/mapper/rootvg-rootlv is the device name of the partition, which is a logical volume managed by the Logical Volume Manager (LVM). The command growpart
/dev/mapper/rootvg-rootlv will extend the partition to fill the disk space and increase the size of the root filesystem. This command will help the administrator solve the problem and free up space.
* lvresize -L +10G -r /dev/mapper/rootvg-rootlv. This command will resize the logical volume that contains the root filesystem and add 10 GB of space. The lvresize command is a tool for resizing logical volumes on Linux systems. The -L option specifies the new size of the logical volume, in this case
+10G, which means 10 GB more than the current size. The -r option resizes the underlying file system as well. The /dev/mapper/rootvg-rootlv is the device name of the logical volume, which is the same as the partition name. The command lvresize -L +10G -r /dev/mapper/rootvg-rootlv will increase the size of the logical volume and the root filesystem by 10 GB and free up space. This command will help the administrator solve the problem and free up space.
The other options are incorrect because they either do not affect the root filesystem (fdisk -1 /dev/sdb, pvcreate
/dev/sdb, lsblk /dev/sda, or vgextend /dev/rootvg /dev/sdb) or do not use the correct syntax (fdisk -1
/dev/sdb instead of fdisk -l /dev/sdb or parted -l /dev/mapper/rootvg-rootlv instead of parted
/dev/mapper/rootvg-rootlv print). References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 10: Managing Storage, pages 318-319, 331-332.

QUESTION 32
A systems administrator is troubleshooting connectivity issues and trying to find out why a Linux server is not able to reach other servers on the same subnet it is connected to. When listing link parameters, the following is presented:

Based on the output above, which of following is the MOST probable cause of the issue?

The address ac:00:11:22:33:cd is not a valid Ethernet address.

The Ethernet broadcast address should be ac:00:11:22:33:ff instead.

The network interface eth0 is using an old kernel module.

The network interface cable is not connected to a switch.

QUESTION 33
Users have reported that the interactive sessions were lost on a Linux server. A Linux administrator verifies the server was switched to rescue.target mode for maintenance. Which of the following commands will restore the server to its usual target?

telinit 0

systemctl reboot

systemctl get-default

systemctl emergency

QUESTION 34
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.)

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

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

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

Restart the computer to enable the new service.

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

Shut down the computer to enable the new service.

QUESTION 35
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?

The checkdiskspace.service is not running.

The checkdiskspace.service needs to be enabled.

The OnCalendar schedule is incorrect in the timer definition.

The system-daemon services need to be reloaded.

QUESTION 36
A systems administrator detected corruption in the /data filesystem. Given the following output:

Which of the following commands can the administrator use to best address this issue?

umount /data
mkfs . xfs /dev/sclcl
mount /data

umount /data
xfs repair /dev/ sdcl
mount /data

umount /data
fsck /dev/ sdcl
mount / data

umount /data
pvs /dev/sdcl
mount /data

QUESTION 37
A Linux engineer needs to download a ZIP file and wants to set the nice of value to -10 for this new process. Which of the following commands will help to accomplish the task?

$ nice -v -10 wget https://foo.com/installation.zip

$ renice -v -10 wget https://foo.com/installation.2ip

$ renice -10 wget https://foo.com/installation.zip

$ nice -10 wget https://foo.com/installation.zip

QUESTION 38
Joe, a user, is unable to log in to the Linux system. Given the following output:

Which of the following commands would resolve the issue?

usermod -s /bin/bash joe

pam_tally2 -u joe -r

passwd -u joe

chage -E 90 joe

QUESTION 39
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?

The service does not have permissions to read write the startupfile.

The service startupfile size cannot be 81k.

The service startupfile cannot be owned by root.

The service startupfile should not be owned by the root group.

QUESTION 40
A systems administrator is investigating why one of the servers has stopped connecting to the internet.

Which of the following is causing the issue?

The DNS address has been commented out in the configuration file.

The search entry in the /etc/resolv.conf file is incorrect.

Wired connection 1 is offline.

No default route is defined.

QUESTION 41
After installing a new version of a package, a systems administrator notices a new version of the corresponding, service file was Installed In order to use the new version of the, service file, which of the following commands must be Issued FIRST?

systemctl status

systemctl stop

systemctl reinstall

systemctl daemon-reload

QUESTION 42
A systems engineer is adding a new 1GB XFS filesystem that should be temporarily mounted under /ops/app.
Which of the following is the correct list of commands to achieve this goal?

QUESTION 43
An administrator attempts to rename a file on a server but receives the following error.

The administrator then runs a few commands and obtains the following output:

Which of the following commands should the administrator run NEXT to allow the file to be renamed by any user?

chgrp reet files

chacl -R 644 files

chown users files

chmod -t files

QUESTION 44
An administrator needs to make an application change via a script that must be run only in console mode.
Which of the following best represents the sequence the administrator should execute to accomplish this task?

systemct1 isolate multi-user.target
sh script.sh
systemct1 isolate graphical.target

systemct1 isolate graphical.target
sh script.sh
systemct1 isolate multi-user.target

sh script.sh
systemct1 isolate multi-user.target
systemct1 isolate graphical.target

systemct1 isolate multi-user.target
systemct1 isolate graphical.target
sh script.sh

Explanation
The correct answer is A. systemctl isolate multi-user.target sh script.sh systemctl isolate graphical.target This sequence will allow the administrator to switch from the graphical mode to the console mode, run the script, and then switch back to the graphical mode.
The systemctl command is used to control the systemd system and service manager, which manages the boot targets and services on Linux systems. The isolate subcommand starts the unit specified on the command line and its dependencies and stops all others. The multi-user.target is a boot target that provides a text-based console login, while the graphical.target is a boot target that provides a graphical user interface. By using systemctl isolate, the administrator can change the boot target on the fly without rebooting the system.
The sh command is used to run a shell script, which is a file that contains a series of commands that can be executed by the shell. The script.sh is the name of the script that contains the application change that the administrator needs to make. By running sh script.sh, the administrator can execute the script in the console mode.
The other options are incorrect because:
B: systemctl isolate graphical.target sh script.sh systemctl isolate multi-user.target This sequence will switch from the console mode to the graphical mode, run the script, and then switch back to the console mode. This is not what the administrator wants to do, as the script must be run only in console mode.
C: sh script.sh systemctl isolate multi-user.target systemctl isolate graphical.target This sequence will run the script in the current mode, which may or may not be console mode, and then switch to console mode and back to graphical mode. This is not what the administrator wants to do, as the script must be run only in console mode.
D: systemctl isolate multi-user.target systemctl isolate graphical.target sh script.sh This sequence will switch from graphical mode to console mode and then back to graphical mode, without running the script at all. This is not what the administrator wants to do, as the script must be run only in console mode.
References:
systemctl(1) – Linux manual page
How to switch between the CLI and GUI on a Linux server
How to PROPERLY boot into single user mode in RHEL/CentOS 7/8
Changing Systemd Boot Target in Linux
Exit Desktop to Terminal in Ubuntu 19.10

QUESTION 45
A DevOps engineer needs to allow incoming traffic to ports in the range of 4000 to 5000 on a Linux server. Which of the following commands will enforce this rule?

iptables -f filter -I INPUT -p tcp –dport 4000:5000 -A ACCEPT

iptables -t filter -A INPUT -p tcp –dport 4000:5000 -j ACCEPT

iptables filter -A INPUT -p tcp –dport 4000:5000 -D ACCEPT

iptables filter -S INPUT -p tcp –dport 4000:5000 -A ACCEPT

QUESTION 46
Joe, a user, is unable to log in to the Linux system. Given the following output:

Which of the following commands would resolve the issue?

usermod -s /bin/bash joe

pam_tally2 -u joe -r

passwd -u joe

chage -E 90 joe

QUESTION 47
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?

sed -i ‘s/SELINUX=enforcing/SELINUX=disabled/’ /etc/selinux/config

restorecon -R -v /var/www/html

setenforce 0

setsebool -P httpd_can_network_connect_db on

QUESTION 48
A systems administrator configured firewall rules using firewalld. However, after the system is rebooted, the firewall rules are not present:

The systems administrator makes additional checks:

Which of the following is the reason the firewall rules are not active?

iptables is conflicting with firewalld.

The wrong system target is activated.

FIREWALL_ARGS has no value assigned.

The firewalld service is not enabled.

QUESTION 49
A cloud engineer is installing packages during VM provisioning. Which of the following should the engineer use to accomplish this task?

Cloud-init

Bash

Docker

Sidecar