CompTIA XK0-004 Online Practice Questions and Exam Preparation

CompTIA XK0-004 Online Questions & Answers

• Question 411:

  A user attempts to use the mount -a command but gets the following error:

  mount: mount point /mnt/test does not exist

  Which of the following commands best describes the action the Linux administrator should take NEXT?

  A. mount -a /mnt/test
  B. mkdir -p /mnt/test
  C. mdadm -p /mnt/test
  D. mkfs /mnt/test
  E. touch /mnt/test
  B. mkdir -p /mnt/test

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  Reference: https://serverfault.com/questions/751113/mount-point-does-not-exist-despite-creating-it

• Question 412:

  A Linux amdinisrator is adding a user's local Linux account to the accounting group. The user is also a member of the finance group. Which of the following is the BEST way to add the user to the accounting group while still maintaining the

  user's existing group members ships?

  A. Usermod -G accounting user1
  B. Usermod -G accounting, finance user1
  C. Usermod -G accounting user1
  D. Usermod -aG accounting user1
  A. Usermod -G accounting user1

• Question 413:

  A Linux system is running normally when the systems administrator receives an alert that one application spawned many processes. The application is consuming a lot of memory, and it will soon cause the machine to become unresponsive. Which of the following commands will stop each application process?

  A. kill `pidof application`
  B. killall application
  C. kill -9 `ps -aux | grep application`
  D. pkill -9 application
  B. killall application

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  Reference: https://www.tecmint.com/how-to-kill-a-process-in-linux/

• Question 414:

  A junior administrator is configuring local name lookups for fully qualified domain names in an isolated environment. The administrator is given a checklist and must accomplish the following tasks:

  1.

  Add localhost with loopback address.

  2.

  Add 192.168.192.12/24 to resolve to database01.comptia.org

  Given this scenario, which of the following steps should the administrator perform to accomplish these tasks?

  A. Open the /etc/nsswitch.conf file with a file editor and add the following lines: 127.0.0.1 localhost 192.168.192.12 database01.comptia.org
  B. Open the /etc/dhcpd.conf file with a file editor and add the following lines: 127.0.0.1 localhost 192.168.192.12 database01.comptia.org
  C. Open the /etc/hosts file with a file editor and add the following lines: 127.0.0.1 localhost 192.168.192.12 database01.comptia.org
  D. Open the /etc/network file with a file editor and add the following lines: 127.0.0.1 localhost 192.168.192.12 database01.comptia.org
  C. Open the /etc/hosts file with a file editor and add the following lines: 127.0.0.1 localhost 192.168.192.12 database01.comptia.org

• Question 415:

  A technician's laptop is configured with wired and wireless interfaces. Both interfaces have obtained the appropriate IP address from the organization's DHCP server.

  Which of the following commands is MOST appropriate to remove the IP address from the wireless interface temporarily so network traffic is routed through the wired interface?

  A. ip addr wlan0 del default
  B. route delete default gw if wlan0
  C. netstat -r wlan0
  D. dhclient -r wlan0
  D. dhclient -r wlan0

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  Reference: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html-single/configuring_and_managing_networking/index

• Question 416:

  Given the output below:

  

  Which of the following commands can be used to remove MyPhoto.jpg from the current directory?

  A. unlink ./MyPhoto.jpg
  B. del Pictures/photo.jpg
  C. rm -rf ./Pictures
  D. rm -f MyPhoto.jpg
  E. ln -rm ./Pictures/photo.jpg
  E. ln -rm ./Pictures/photo.jpg

• Question 417:

  An administrator is utilizing an automation engine than uses SSH to run commands on remote systems. Which of the fctowng does this describe?

  A. Inventory
  B. Agentless archrtecture
  C. Build automation
  D. Version control
  B. Agentless archrtecture

• Question 418:

  A junior Linux administrator is updating local name resolution to support IPv6. The administrator issues the command cat /etc/hosts and receives the following output:

  127.0.0.1 localhost

  Which of the following actions should the administrator perform to accomplish this task?

  A. Modify the /etc/hosts file, and add the ipv6 localhost entry to the file.
  B. Modify the /etc/hosts file, and add the ::1 localhost entry to the file.
  C. Modify the /etc/hosts file, and add the ipv4 localhost entry to the file.
  D. Modify the /etc/hosts file, and add the 0.0.0.0 localhost entry to the file.
  B. Modify the /etc/hosts file, and add the ::1 localhost entry to the file.

• Question 419:

  A systems administrator clones copies of a Linux VM every time a new Linux server is needed. The administrator notices the command prompt always states localhost.localdomain. Which of the following should the administrator run to have the command prompt consistently labeled as Server1 rather than localhost.localdomain?

  A. host Server1
  B. echo "127.0.0.1 Server1 Server1.localdomain" >> /etc/hosts
  C. hostnamectl set-hostname "Server1" --pretty
  D. hostnamectl set-hostname Server1 --transient
  E. hostnamectl set-hostname Server1.localdomain --static
  C. hostnamectl set-hostname "Server1" --pretty

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  Reference: https://www.tutorialspoint.com/how-to-setup-hostname-in-centos-7-x-or-rhel-7-x-linux-versions

• Question 420:

  Which of the following can be used to boot a DVD from a remote device to initialize a Linux system setup on bare metal hardware as if it is a local DVD?

  A. UEFI
  B. PXE
  C. NFS
  D. GRUB
  A. UEFI

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  Reference: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/ installation_guide/ch-boot-x86