2022 Latest 100% Exam Passing Ratio - XK0-004 Dumps PDF [Q79-Q94]

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2022 Latest 100% Exam Passing Ratio – XK0-004 Dumps PDF

Pass Exam With Full Sureness – XK0-004 Dumps with 372 Questions

CompTIA Linux+ XK0-004 Exam

CompTIA Linux+ XK0-004 Exam which is related to CompTIA Linux+ Certification. This exam validates the Candidate ability to configure, monitor, and support servers running the Linux operating system. It also deals with the knowledge and skills of security, kernel modules, storage and visualization, device management at an enterprise level, git and automation, networking and firewalls, server side and command line, server (vs. client-based) coverage, troubleshooting and SELinux.

NO.79 A user has been locked out of an account due to too many failed password attempts. Which of the following commands will unlock the user’s account?

pam_tally2 –user=user –reset

passwd -u user -G root

usermod -u user -G root

chage -1 user=user –reset

Reference:
https://www.tecmint.com/use-pam_tally2-to-lock-and-unlock-ssh-failed-login-attempts/

NO.80 While mount: mount point /mnt/test does not exist
Which of the following commands best describes the action the Linux administrator should take NEXT?

mount -a /mnt/test

mkdir -p /mnt/test

mdadm -p /mnt/test

mkfs /mnt/test

touch /mnt/test

NO.81 A junior administrator of a physical server receives log messages indicating the out-of-memory killer has been active. All memory slots are in use on the motherboard, but additional disk space is available. Space has been allocated for a swap file.
Which of the following should the administrator use to reduce the output of memory messages?

free : swapoff / swapfile ; swapon -a

mkswap /swapfile; swapon -a

fallocate -l 2G /swapfile && swapon -a

echo “1” > /proc/meninfo ; swapon / swapfile

NO.82 An administrator needs to mount the shared NFS file system testhost:/testvolume to mount point /mnt/testvol and make the mount persistent after reboot.
Which of the following BEST demonstrates the commands necessary to accomplish this task?

NO.83 A corporate server security policy states, “Ensure password hashes are not readable by non-administrative users.” The administrator should check the permissions on which of the following files to ensure the server satisfies this policy?

/etc/shadow

/etc/passwd

/etc/group

/etc/security/limits.conf

NO.84 A Linux systems administrator is troubleshooting an issue with the /home directory running out of space. The administrator needs to determine which /home directories are using the most space. Which of the following commands should be used?

lvs

fsck

NO.85 Which of the following commands should a system administrator use to configure a passwordless login to remote system? (Select TWO.)

Ssh-agent

Ssh-copy-id

Ssh-keygen

Ssh-add

openssl

NO.86 Which of the following statements BEST represents what the term “agentless” means regarding orchestration?

Installation of a tool is not required on the remote system to perform orchestration tasks

It facilitates version control when using infrastructure as code during orchestration

It automatically removes malware from the remote system during orchestration

A tool can only be accessed remotely to perform orchestration tasks

Explanation/Reference: https://whatis.techtarget.com/definition/agentless

NO.87 A user has connected a Bluetooth mouse to a computer, but it is not working properly. Which of the following commands should the systems administrator use to fix the issue?

lsmod -i bluetooth

insmod bluetooth

modprobe -r bluetooth

depmod -i bluetooth

NO.88 An administrator has written the following Bash script:

All necessary files exist in the correct locations. However, when the administrator executes /home/user/test.sh the following error is received:
No such file or directory
Which of the following is the MOST likely cause of the error?

The shebang points to the wrong path.

The script is not executable.

The formatting of the file is incorrect.

Nslookup is not installed.

NO.89 When requesting SSH access to a remote system, a user accidentally emailed the id_rsa key to the administrator. Which of the following should the user do NEXT?

Run the ssh-add command to add the remote system to known_hosts.

Ask the administrator to run chmod 600 id_rsa on the remote system.

Delete id_rsa key file and send the id_rsa.pub key file instead.

Stop using that key and run ssh-keygen to generate a new key pair.

NO.90 Which of the following BEST describes running on a Linux system?

Containers only need the namespaces functionally to run on a Linux system available since kernel 2.6.

Containers need a hypervisor to run a Linux system. Cgroups namespaces are functionalities used for the kernel but not for running containers.

Containers only need the cgroups functionality for running on a Linux system. Namespaces is not a Linux kernel functionality needed for creating and managing containers.

Containers use the cgroups and namespaces functionalities to isolate processes and assign hardware resources to each of those isolated processes.

NO.91 An analyst is trying to determine which public IP addresses are managed by Company A, but the script is not working correctly.

Which of the following explains what is wrong with the script?

$(cat ip-list.txt)should be changed to `cat ip-list.txt`in the forstatement.

The forshould be changed to whilein the loop.

The >should be changed to 2>in the dostatement.

The -neflag should be changed to -eqin the ifstatement.

NO.92 Find the file named core and remove it from the system.
INSTRUCTIONS
Type “help” to display a list of available commands.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

NO.93 Find the file named core and remove it from the system.
INSTRUCTIONS
Type “help” to display a list of available commands.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

See below.
Solution as

Reference:
https://www.cyberciti.biz/faq/linux-unix-how-to-find-and-remove-files/

NO.94 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?