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CompTIA XK0-004 Exam Practice Questions (P. 5)

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Question #41
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?
  1. A
    Merge the changes from the feature branch to the master branch.
  2. B
    Save the changes to the master branch automatically with each Git commit.
  3. C
    Clone the feature branch into the master branch.
  4. 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 #42
Which of the following will provide a list of all flash, external, internal, and SSD drives?
  1. A
    lspci
  2. B
    lsmod
  3. C
    lsblk
  4. D
    lsusb

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

Question #43
Which of the following configuration management tools is considered agentless?
  1. A
    Puppet
  2. B
    Salt
  3. C
    Ansible
  4. D
    Chef

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

Question #44
An administrator reviews the following configuration file provided by a DevOps engineer:

Which of the following would the application parsing this file MOST likely have to support?
  1. A
    YAML
  2. B
    AJAX
  3. C
    JSON
  4. D
    SOAP

Correct Answer:
A

Question #45
Which of the following is a difference between YAML and JSON?
  1. A
    Users can comment in YAML but not in JSON
  2. B
    JSON only uses curly brackets, while YAML only uses square brackets
  3. C
    JSON is used in web development, while YAML is used solely in back-end systems.
  4. D
    YAML has been deprecated for JSON.

Correct Answer:
A
Reference:
https://www.json2yaml.com/yaml-vs-json

Question #46
A junior administrator of a physical server receives log messages indicating the out-of-memory killer has been active. All memory slots are in use on the motherboard, but additional disk space is available. Space has been allocated for a swap file.
Which of the following should the administrator use to reduce the output of memory messages?
  1. A
    free : swapoff / swapfile ; swapon -a
  2. B
    mkswap /swapfile; swapon ג€"a
  3. C
    fallocate ג€"l 2G /swapfile && swapon ג€"a
  4. D
    echo ג€1ג€ > /proc/meninfo ; swapon / swapfile

Correct Answer:
B

Question #47
A junior Linux administrator is optimizing a system in which an application needs to take priority 0 when running the process. The administrator runs the ps command and receives the following output:

Given this scenario, which of the following steps will address this issue?
  1. A
    Issue the command renice ג€"n 0 ג€"p 8481
  2. B
    Issue the command renice ג€"p 8481
  3. C
    Issue the command renice ג€"p 0 -n 8481
  4. D
    Issue the command renice ג€"n 8481

Correct Answer:
A

Question #48
An administrator needs to mount the shared NFS file system testhost:/testvolume to mount point /mnt/testvol and make the mount persistent after reboot.
Which of the following BEST demonstrates the commands necessary to accomplish this task?
A.

B.

C.

D.


Correct Answer:
A

Question #49
A systems administrator has deployed a Linux server based on an Anaconda process with all packages and custom configurations necessary to install a web server role.
Which of the following could be used to install more Linux servers with the same characteristics?
  1. A
    /etc/sysconfig/anaconda.cfg
  2. B
    /root/anaconda.auto
  3. C
    /root/anaconda-ks.cfg
  4. D
    /etc/sysconfig/installation.cfg

Correct Answer:
C
Reference:
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/installation_guide/sn-automating-installation

Question #50
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?
  1. A
    cat /proc/sys/net/ipv4/ip_route > 1
  2. B
    echo ג€1ג€ > /proc/sys/net/ipv4/ip_forward
  3. C
    echo ג€1ג€ > /proc/sys/net/ipv4/ip_route
  4. D
    echo ג€1ג€ > /proc/sys/net/ipv4/ip_net

Correct Answer:
B

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