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 Share some useful xk0-004 exam questions below.

QUESTION 1
A systems administrator wants to know the current status of a series of dd jobs that were started in the background
three hours ago. Which of the following commands will achieve this task?
A. sudo killall -HUP dd
B. sudo killall dd
C. sudo killall -TERM dd
D. sudo killall -USR1 dd
Correct Answer: D
Reference: https://askubuntu.com/questions/215505/how-do-you-monitor-the-progress-of-dd

QUESTION 2
The development team has automated their software build process so each time a change is submitted to the source
code repository, a new software build is compiled. They are requesting that the Linux operations team look into
automating the deployment of the software build into the test environment. Which of the following is the benefit to the
development team for implementing deployment automation?
A. To ensure the build commits are also deployed to the test environment
B. To enable notifications when builds are deployed to the test environment
C. To ensure software builds in test are not accidentally deployed to production
D. To streamline the deployment process for deploying builds into test environments
Correct Answer: D

QUESTION 3
Which of the following is the template for the grub.cfg file?
A. /etc/default/grub
B. /etc/grub2.cfg
C. /etc/sysct1.conf
D. /boot/efi
Correct Answer: A
Reference: https://geek-university.com/linux/grub-version-2/

 

QUESTION 4
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.
Correct Answer: D

QUESTION 5
A technician wants to secure a sensitive workstation by ensuring network traffic is kept within the local subnet. To
accomplish this task, the technician executes the following command:
echo 0 > /proc/sys/net/ipv4/ip_default_ttl
Which of the following commands can the technician use to confirm the expected results? (Choose two.)
A. tcpdump
B. traceroute
C. route
D. iperf
E. ip
F. arp
Correct Answer: CF

QUESTION 6
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/modprbe-bluetooth
D. echo “rmod bluetooth” > /etc/modprobe.d/rmmod-bluetooth
Correct Answer: C

QUESTION 7
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 -l
Correct Answer: C
Reference: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/securityenhanced_linux/sect-security-enhanced_linux-working_with_selinux-selinux_contexts_labeling_files

QUESTION 8
A Linux administrator wants to obtain a list of files and subdirectories in the /etc directory that contain the word
“services”. Once the files and subdirectories are discovered, they should be listed alphabetically in the /var/tmp/
foundservices file. Which of the following shell scripts will accomplish this task?
A. #/bin/bash find /etc -name services | sort > /var/tmp/foundservices
B. #/bin/bash locate /etc -sort -name services > /var/tmp/foundservices
C. #/bin/bash find -name services -sort /var/tmp/foundservices
Correct Answer: B

QUESTION 9
In order to comply with new security policies, an administrator needs to prevent the SSH server from using insecure
algorithms. Which of the following files should be edited to accomplish this?
A. /etc/ssh/sshd_config
B. /etc/ssh/ssh_config
C. ~/.ssh/ssh_config
D. /etc/ssh/known_hosts
Correct Answer: A

QUESTION 10
Which of the following statements BEST represents what the term “agentless” means regarding orchestration?
A. Installation of a tool is not required on the remote system to perform orchestration tasks
B. It facilitates version control when using infrastructure as code during orchestration
C. It automatically removes malware from the remote system during orchestration
D. A tool can only be accessed remotely to perform orchestration tasks
Correct Answer: A
Reference: https://whatis.techtarget.com/definition/agentless

QUESTION 11
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 /
Correct Answer: A
Reference: https://www.computerhope.com/unix/uumask.htm

QUESTION 12
A Linux systems administrator needs to provision multiple web servers into separate regional datacenters. The systems
architect has instructed the administrator to define the server infrastructure using a specific tool that consumes a textbased file.
Which of the following is the BEST reason to do this?
A. To document the infrastructure so it can be included in the system security plan
B. To ensure the administrator follows the planning phase of the system development life cycle
C. To define the infrastructure so it can be provisioned consistently with minimal manual tasks
D. To validate user requirements have been met within each regional datacenter for compliance
Correct Answer: B

QUESTION 13
A systems administrator wants to deploy several applications to the same server quickly. Each application should be abstracted from the host with its own dependencies and libraries and utilize a minimal footprint. Which of the following
would be BEST in this scenario?
A. Virtual machines
B. Type 2 hypervisor
C. Chroot jails
D. Containers
Correct Answer: D

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