CompTIA XK0-004 Online Practice Questions and Exam Preparation

CompTIA XK0-004 Online Questions & Answers

• Question 121:

  A Linux administrator needs to update a script that is stored in the team's Git repository.

  After the administrator clones the repository, which of the following is the BEST method to ensure merging changes in the future will not overwrite other users' commits to the repository?

  A. Create a new repository based on the existing repository
  B. Create a new folder with the changes under the administrator's name
  C. Create a new script and commit it to the master branch
  D. Create a new branch and make modifications to the code
  B. Create a new folder with the changes under the administrator's name

• Question 122:

  A Linux administrator implemented a new HTTP server using the default configuration. None of the users on the network can access the server. If there is no problem on the network or with the users' workstations, which of the following steps will BEST analyze and resolve the issue?

  A. Run netstat to ensure the port is correctly bound, and configure the firewall to allow access on ports 80 and 443
  B. Run route to ensure the port is correctly bound, and configure the firewall to allow access on ports 80 and 443
  C. Run netcat to ensure the port is correctly bound, and configure a static route to the web to allow access on ports 80 and 443
  D. Run route to ensure the port is correctly bound, and configure SELinux to allow access on ports 80 and 443
  C. Run netcat to ensure the port is correctly bound, and configure a static route to the web to allow access on ports 80 and 443

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  Reference: https://www.varonis.com/blog/netcat-commands/

• Question 123:

  A new video card was added to a customer workstation. To get the new video card to work correctly, a systems administrator needs to remove support for the nouveau video driver on the Linux workstation.

  Which of the following will accomplish this task?

  A. Use rmmod -f nouveau.
  B. Use modprobe -R nouveau.
  C. Add blacklist nouveau to /etc/modprobe.d/blacklist.conf.
  D. Add blacklist nouveau to /etc/modprobe.conf.
  A. Use rmmod -f nouveau.

• Question 124:

  A systems administrator wants to increase the existing drive space on a Linux server with a software RAID. After physically adding the new drive to the system, and then adding the drive to the RAID array, the administrator notices the available drive space has not increased. A status of the array shows the new drive and the original storage space:

  md0 : active Raid sdd1[3]S sdc1[2] sdb1[1] sda1[0] 954585654 blocks level5 64K chunk algorithm 2 [3/3] [UUU]

  Which of the following should the administrator do to make all storage space available on the RAID array?

  A. Run hdparm to alert the kernel to a new drive.
  B. Convert the new drive to a hot spare.
  C. Set the RAID type to a RAID 1.
  D. Grow the array size to four members.
  C. Set the RAID type to a RAID 1.

• Question 125:

  A Linux user wants to give read-only permissions to a directory and its contents. Which of the following commands will allow the user to accomplish this task?

  A. chmod -R 400 /new_directory/
  B. chmod -R 600 /new_directory/
  C. chmod 400 /new_directory/
  D. chmod 600 /new_directory/
  D. chmod 600 /new_directory/

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  Reference: https://www.linode.com/docs/guides/modify-file-permissions-with-chmod/

• Question 126:

  A Linux administrator needs to remotely update the contents of the www.comptia.org/contacts URL.

  Which of the following commands would allow the administrator to download the current contents of the URL before updating?

  A. curl www.comptia.org/contacts
  B. dig www.comptia.org/contacts
  C. apt-get www.comptia.org/contacts
  D. yum list www.comptia.org/contacts
  A. curl www.comptia.org/contacts

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  Reference: https://www.thegeekstuff.com/2012/04/curl-examples/

• Question 127:

  A user receives an access_denied error when trying to modify a file, even though the file permissions are set to 777. Which of the following commands should be used to view additional file permissions?

  A. getsebool
  B. getenforce
  C. ls -z
  D. ps -z
  C. ls -z

• Question 128:

  A Linux administrator is using a Linux system as a router. During the tests, the administrator discovers that IP packets are not being sent between the configured interfaces. Which of the following commands enables this feature for IPv4 networks?

  A. cat /proc/sys/net/ipv4/ip_route > 1
  B. echo "1" > /proc/sys/net/ipv4/ip_forward
  C. echo "1" > /proc/sys/net/ipv4/ip_route
  D. echo "1" > /proc/sys/net/ipv4/ip_net
  B. echo "1" > /proc/sys/net/ipv4/ip_forward

• Question 129:

  An administrator is analyzing a Linux server which was recently hacked.

  Which of the following will the administrator use to find all unsuccessful login attempts?

  A. nsswitch
  B. faillock
  C. pam_tally2
  D. passwd
  C. pam_tally2

• Question 130:

  A company wants to ensure that all newly created files can be modified only by their owners and that all new directory content can be changed only by the creator of the directory. Which of the following commands will help achieve this task?

  A. umask 0022
  B. umask 0012
  C. chmod -R 0644 /
  D. chmod -R 0755 /
  A. umask 0022

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  Reference: https://www.computerhope.com/unix/uumask.htm