CompTIA Linux+ XK0-005 Sample Questions & Answers

test2022-10-11T07:23:29+00:00

CompTIA Linux+ XK0-005 Sample Questions & Answers are new collected, which are helpful for your preparation. CompTIA Linux+ validates the skills administrators need to secure the enterprise, power the cloud and keep systems running. This exam has the objectives of System Management, Security, Scripting, Containers, and Automation, Troubleshooting. CompTIA Linux+ XK0-005 Sample Questions & Answers are designed to simulate a natural exam environment and are quite beneficial in ensuring memorable success in the CompTIA Linux+ exam.

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1. A systems administrator requires that all files that are created by the user named web have read-only permissions by the owner .

Which of the following commands will satisfy this requirement?

chown web:web /home/web

chmod -R 400 /home/web

echo "umask 377" >> /home/web/.bashrc

setfacl read /home/web

2. A Linux administrator booted up the server and was presented with a non-GUI terminal. The administrator ran the command systemctl isolate graphical.target and rebooted the system by running systemctl reboot, which fixed the issue. However, the next day the administrator was presented again with a non-GUI terminal .

Which of the following is the issue?

The administrator did not reboot the server properly.

The administrator did not set the default target to basic.target.

The administrator did not set the default target to graphical.target.

The administrator did not shut down the server properly.

3. A systems administrator is tasked with preventing logins from accounts other than root, while the file /etc/nologin exists .

Which of the following PAM modules will accomplish this task?

pam_login.so

pam_access.so

pam_logindef.so

pam_nologin.so

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?

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.

5. A Linux administrator created the directory /project/access2all. By creating this directory, the administrator is trying to avoid the deletion or modification of files from non-owners .

Which of the following will accomplish this goal?

chmod +t /project/access2all

chmod +rws /project/access2all

chmod 2770 /project/access2all

chmod ugo+rwx /project/access2all

6. A Linux user reported the following error after trying to connect to the system remotely:

ssh: connect to host 10.0. 1. 10 port 22: Resource temporarily unavailable

The Linux systems administrator executed the following commands in the Linux system while trying to diagnose this issue:

Which of the following commands will resolve this issue?

firewall-cmd --zone=public --permanent --add-service=22

systemctl enable firewalld; systemctl restart firewalld

firewall-cmd --zone=public --permanent --add-service=ssh

firewall-cmd --zone=public --permanent --add-port=22/udp

7. 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.)

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

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

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

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

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

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

8. A Linux system is failing to boot. The following error is displayed in the serial console:

[[1;33mDEPEND[Om] Dependency failed for /data.

[[1;33mDEPEND[Om] Dependency failed for Local File Systems

...

Welcome to emergency mode! After logging in, type "journalctl -xb" to viewsystem logs, "systemctl reboot" to reboot, "systemctl default" to try again to boot into default mode.

Give root password for maintenance

(or type Control-D to continue}

Which of the following files will need to be modified for this server to be able to boot again?

/etc/mtab

/dev/sda

/etc/fstab

/ete/grub.conf

9. A systems administrator frequently connects to a remote host via SSH and a non-standard port. The systems administrator would like to avoid passing the port parameter on the command line every time .

Which of the following files can be used to set a different port value for that host?

/etc/ssh/sshd_config

/etc/ssh/moduli

~/.ssh/config

~/.ssh/authorized_keys

10. After installing some RPM packages, a systems administrator discovers the last package that was installed was not needed .

Which of the following commands can be used to

remove the package?

dnf remove packagename

apt-get remove packagename

rpm -i packagename

apt remove packagename

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11. A Linux administrator is troubleshooting SSH connection issues from one of the workstations.

When users attempt to log in from the workstation to a server with the IP address 104.2 1. 75.76, they receive the following message:

The administrator reviews the information below:

Which of the following is causing the connectivity issue?

The workstation has the wrong IP settings.

The sshd service is disabled.

The server’s firewall is preventing connections from being made.

The server has an incorrect default gateway configuration.

12. A Linux administrator is troubleshooting an issue in which an application service failed to start on a Linux server.

The administrator runs a few commands and gets the following outputs:

Based on the above outputs, which of the following is the MOST likely action the administrator should take to resolve this issue?

Enable the logsearch.service and restart the service.

Increase the TimeoutStartUSec configuration for the logsearch.sevice.

Update the OnCalendar configuration to schedule the start of the logsearch.service.

Update the KillSignal configuration for the logsearch.service to use TER

13. Some servers in an organization have been compromised. Users are unable to access to the organization’s web page and other services.

While reviewing the system log, a systems administrator notices messages from the kernel regarding firewall rules:

Which of the following commands will remediate and help resolve the issue?

A)

Option A

Option B

Option C

Option D

14. A junior systems administrator has just generated public and private authentication keys for passwordless login .

Which of the following files will be moved to the remote servers?

id_dsa.pem

id_rsa

id_ecdsa

id_rsa.pub

15. A systems administrator is tasked with mounting a USB drive on a system. The USB drive has a single partition, and it has been mapped by the system to the device /dev/sdb .

Which of the following commands will mount the USB to /media/usb?

mount /dev/sdb1 /media/usb

mount /dev/sdb0 /media/usb

mount /dev/sdb /media/usb

mount -t usb /dev/sdb1 /media/usb

16. A Linux administrator needs to remove software from the server .

Which of the following

RPM options should be used?

rpm -s

rm -d

rpm -q

rpm -e

17. A junior administrator is setting up a new Linux server that is intended to be used as a router at a remote site .

Which of the following parameters will accomplish this goal?

A)

Option A

Option B

Option C

Option D

18. A Linux administrator modified the SSH configuration file .

Which of the following commands should be used to apply the configuration changes?

systemctl stop sshd

systemctl mask sshd

systemctl reload sshd

systemctl start sshd

19. Due to low disk space, a Linux administrator finding and removing all log files that were modified more than 180 days ago .

Which of the following commands will accomplish this task?

find /var/log -type d -mtime +180 -print -exec rm {} ;

find /var/log -type f -modified +180 -rm

find /var/log -type f -mtime +180 -exec rm {}

find /var/log -type c -atime +180 Cremove

20. A systems administrator wants to test the route between IP address 10.0.2.15 and IP address 192.168. 1. 40 .

Which of the following commands will accomplish this task?

route -e get to 192.168. 1. 40 from 10.0.2.15

ip route get 192.163. 1. 40 from 10.0.2.15

ip route 192.169. 1. 40 to 10.0.2.15

route -n 192.168. 1. 40 from 10.0.2.15

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21. A cloud engineer is asked to copy the file deployment.yaml from a container to the host where the container is running .

Which of the following commands can accomplish this task?

docker cp container_id/deployment.yaml deployment.yaml

docker cp container_id:/deployment.yaml deployment.yaml

docker cp deployment.yaml local://deployment.yaml

docker cp container_id/deployment.yaml local://deployment.yaml

22. A Linux administrator is troubleshooting the root cause of a high CPU load and average.

Which of the following commands will permanently resolve the issue?

renice -n -20 6295

pstree -p 6295

iostat -cy 1 5

kill -9 6295

23. A Linux systems administrator is configuring a new filesystem that needs the capability to be mounted persistently across reboots .

Which of the following commands will accomplish this task? (Choose two.)

df -h /data

mkfs.ext4 /dev/sdc1

fsck /dev/sdc1

fdisk -l /dev/sdc1

echo "/data /dev/sdc1 ext4 defaults 0 0" >> /etc/fstab

echo "/dev/sdc1 /data ext4 defaults 0 0" >> /etc/fstab

24. Based on an organization’s new cybersecurity policies, an administrator has been instructed to ensure that, by default, all new users and groups that are created fall within the specified values below.

To which of the following configuration files will the required changes need to be made?

/etc/login.defs

/etc/security/limits.conf

/etc/default/useradd

/etc/profile

25. A Linux administrator cloned an existing Linux server and built a new server from that clone.

The administrator encountered the following error after booting the cloned server:

The administrator performed the commands listed below to further troubleshoot and mount the missing filesystem:

Which of the following should administrator use to resolve the device mismatch issue and mount the disk?

mount disk by device-id

fsck -A

mount disk by-label

mount disk by-blkid

26. A Linux system fails to start and delivers the following error message:

Which of the following commands can be used to address this issue?

fsck.ext4 /dev/sda1

partprobe /dev/sda1

fdisk /dev/sda1

mkfs.ext4 /dev/sda1

27. A systems administrator is deploying three identical, cloud-based servers.

The administrator is using the following code to complete the task:

Which of the following technologies is the administrator using?

Ansible

Puppet

Chef

Terraform