CompTIA CompTIA Certifications XK0-004 Questions & Answers

• Question 321:

  Which of the following configuration management tools is considered agentless?

  A. Puppet

  B. Salt

  C. Ansible

  D. Chef

  Correct Answer: C

  Reference: https://www.intigua.com/blog/puppet-vs.-chef-vs.-ansible-vs.-saltstack

• Question 322:

  Which of the following will provide a list of all flash, external, internal, and SSD drives?

  A. lspci

  B. lsmod

  C. lsblk

  D. lsusb

  Correct Answer: C

  Reference: https://www.linux.com/learn/intro-to-linux/2017/3/how-format-storage-devices-linux

• Question 323:

  A systems administrator has finished building a new feature for the monitoring software in a separate Git branch. Which of the following is the BEST method for adding the new feature to the software's master branch?

  A. Merge the changes from the feature branch to the master branch.

  B. Save the changes to the master branch automatically with each Git commit.

  C. Clone the feature branch into the master branch.

  D. Pull the changes from the feature branch into the master branch.

  Correct Answer: A

  Reference: https://git-scm.com/book/en/v2/Git-Branching-Basic-Branching-and-Merging

• Question 324:

  An administrator needs to create a shared directory in which all users are able to read, write, and execute its content but none of the regular users are able to delete any content. Which of the following permissions should be applied to this shared directory?

  A. rwxrwxrwt

  B. rwxrwxrws

  C. rwxrwxrwx

  D. rwxrwxrw*

  Correct Answer: A

• Question 325:

  A Linux administrator wants to fetch a Git repository from a remote Git server. Which of the following is the BEST command to perform this task?

  A. git checkout

  B. git clone

  C. git merge

  D. git config

  Correct Answer: B

  Reference: https://git-scm.com/book/en/v2/Git-Basics-Working-with-Remotes

• Question 326:

  A Linux server needs to be accessed, but the root password is not available.

  Which of the following would BEST allow an administrator to regain access and set a new known password at the same time?

  A. Boot into single-user mode and reset the password via the passwd command.

  B. Boot into single-user mode and reset the password by editing the /etc/passwd file.

  C. Boot into single-user mode and reset the password by editing the /etc/shadow file.

  D. Boot into single-user mode and reset the password via the chage command.

  Correct Answer: A

  Reference: https://phoenixnap.com/kb/how-to-change-root-password-linux

• Question 327:

  A Linux systems administrator wants the ability to access systems remotely over SSH using RSA authentication. To which of the following files should the RSA token be added to allow this access?

  A. authorized_keys

  B. ~/.ssh/ssh_config

  C. id_rsa.pub

  D. known_hosts

  Correct Answer: C

  Reference: https://www.digitalocean.com/community/tutorials/how-to-configure-ssh-key-based- authentication-on-a-linux-server

• Question 328:

  A junior Linux administrator is installing a new application with CPU architecture requirements that have the following specifications:

  1.

  x64 bit

  2.

  3.0GHz speed

  3.

  Minimum quad core

  The administrator wants to leverage existing equipment but is unsure whether the requirements of these systems are adequate. The administrator issues the following command cat /proc/cpuinfo. The output of the command is as follows:

  

  Which of the following is the recommended course of action the administrator should take based on this output?

  A. Install the application, as the system meets the application requirements

  B. Procure new equipment that matches the recommended specifications

  C. Recompile the Linux kernel to support the installation.

  D. Reconfigure lib modules to support the new application.

  Correct Answer: A

• Question 329:

  A new corporate policy states that Bluetooth should be disabled on all company laptops. Which of the following commands would disable the use of Bluetooth?

  A. echo "blacklist bluetooth" > /etc/modprobe.d/blacklist-bluetooth

  B. echo "kill bluetooth" > /etc/modprobe.d/kill-bluetooth

  C. echo "modprobe bluetooth" > /etc/modprobe.d/modporbe-bluetooth

  D. echo "rmmod bluetooth" > /etc/modprobe.d/rmmod-bluetooth

  Correct Answer: C

• Question 330:

  An operator finds a user is having issues with opening certain files.

  Which of the following commands would allow the security administrator to list and check the SELinux context?

  A. ls -D

  B. ls -a

  C. ls -Z

  D. ls -1

  Correct Answer: C

  Reference: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/security- enhanced_linux/sect-security-enhanced_linux-working_with_selinux-selinux_contexts_labeling_files