CompTIA XK0-004 Online Practice Questions and Exam Preparation

CompTIA XK0-004 Online Questions & Answers

• Question 151:

  An administrator receives a USB drive and wants to make an exact copy of the disk before starting to work on it. One of the partitions on the USB drive was mounted as /dev/sdc1. Which of the following commands should the administrator use?

  A. dd if=/dev/sdc of=~/usb_copy.img bs=512
  B. dd if=/dev/sdc1 of=~/usb_copy.img count=1024
  C. dd if=/dev/sdc1 of=~/usb_copy.img bs=1024
  D. dd of=/dev/sdc if=~/usb_copy.img bs=1M
  C. dd if=/dev/sdc1 of=~/usb_copy.img bs=1024

• Question 152:

  A user wants to list the lines of a log, adding a correlative number at the beginning of each line separated by a set of dashes from the actual message. Which of the following scripts will complete this task?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  D. Option D

• Question 153:

  A Linux user uses a VPN to securely access the company's systems from a laptop.

  Which of the following protocols are MOST likely used to secure the VPN connection? (Choose two.)

  A. IPSec
  B. HTTP
  C. SFTP
  D. VNC
  E. SSL/TLS
  F. SELinux
  A. IPSec
  E. SSL/TLS

• Question 154:

  Which of the following should the systems administrator use to ensure the test account is disabled after 24 hours if the account's password has expired?

  A. passwd -1 test --t 24
  B. passwd -i 1 test
  C. passwd -e test 24
  D. passwd -d -l --n 1 test
  C. passwd -e test 24

• Question 155:

  Which of the following is the BEST reason for not storing database files in the /var directory?

  A. The /var filesystem is not fast enough for database files.
  B. The number of files in /var is limited by the available inodes.
  C. Files in /var do not have strict file permissions.
  D. If log files fill up /var, it might corrupt the database.
  D. If log files fill up /var, it might corrupt the database.

• Question 156:

  A systems administrator is installing an HTTPD server on a Linux server and configuring it as a proxy server. The administrator runs the following commands to verify that the service is running:

  

  However, the administrator is getting a 503 error when browsing to portal . company. internal. After reviewing the logs, the following error information is discovered:

  

  Which Of the following commands BEST resolves the issue?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  A. Option A

• Question 157:

  A customer needs to spin-up 20 new VMs on a web cluster.

  Which of the following would help the customer use small amounts of storage per VM on a private cloud when creating each new VM in the environment?

  A. Snapshots
  B. VM templates
  C. Thin provisioning
  D. Cloned VMs
  B. VM templates

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  Reference: https://www.nakivo.com/blog/vm-templates-a-to-z/

• Question 158:

  An administrator needs to change the DNS domain search order of a single Linux host to localize it better. Which of the following files should the administrator edit?

  A. /etc/resolv.conf
  B. /etc/hosts
  C. /etc/nsswitch.conf
  D. /etc/dhcpd.conf
  C. /etc/nsswitch.conf

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  Reference: https://www.cyberciti.biz/faq/howto-change-dns-search-order-in-linux/

• Question 159:

  A systems administrator scheduled a new kernel module to replace an existing module while the system is running. Which of the ktoung wi accompfctfi ths task?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  B. Option B

• Question 160:

  A systems administrator is attempting to access a server by SSH. The Linux administrator ensures that the SSH keys on the remote server were unable to connect. The following error message is being displayed:

  

  Which of the following needs to be changed on order for the administrator to access the server via SSH?

  A. Password
  B. SSL
  C. SELinux
  D. OpenSSH
  A. Password