XK0-005 practice questions 141–150

1. Question 141 · 300 in bank

   An administrator needs to make an application change via a script that must be run only in console mode. Which of the following best represents the sequence the administrator should execute to accomplish this task?

   • Asystemctl isolate multi-user.target sh script.sh systemctl isolate graphical.target
   • Bsystemctl isolate graphical.target sh script.sh systemctl isolate multi-user.target
   • Csh script.sh systemctl isolate multi-user.target systemctl isolate graphical.target
   • Dsystemctl isolate multi-user.target systemctl isolate graphical.target sh script.sh

   Show answer

   Answer: A

   Explanation

   It's A. systemctl isolate multi-user.target would switch the system from the GUI to a console screen sh script.sh executes the script systemctl isolate graphical.target would return the system to the GUI

   Source: Adapted from community discussion — BlackSkullz

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2. Question 142 · 300 in bank

   A Linux administrator logs in to a system and identifies that an important backup has been started. The backup process is consuming a considerable amount of CPU lime but needs to continue. Which of the following should the administrator use to reduce the impact this process has on other services?

   • Arenice -n 15 -p
   • Bnice -n 15 -p
   • Crenice -n -15 -p
   • Dnice -n -15 -p

   Show answer

   Answer: A

   Explanation

   I'm going with A. The nice priorites go from -20 to 19, with -20 being the highest priority and 19 being the lowest priority. Since the process must run, setting the priority to 15 would lower the priority of the process while ensuring that the process is still running and CPU time can be freed up for the users and services on the system. B would set it's priority to -15 which wouldn't solve anything because it would give it the 6th highest priority setting and make it consume even more resources

   Source: Adapted from community discussion — BlackSkullz

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3. Question 143 · 300 in bank

   The application team has reported latency issues that are causing the application to crash on the Linux server. The Linux administrator starts troubleshooting and receives the following output:

   

   Which of the following commands will improve the latency issue?

   • A# echo 'net.core.net_backlog = 5000000' >> /etc/sysctl.conf # sysctl -p # systemctl daemon-reload
   • B# ifdown eth0 # ip link set dev eth0 mtu 800 # ifup eth0
   • C# systemctl stop network # ethtool -g eth0 512 # systemctl start network
   • D# echo 'net.core.rmem_max = 12500000' >> /etc/sysctl.conf # echo 'net.core.wmem_max = 12500000' >> /etc/sysctl.conf # sysctl -p

   Show answer

   Answer: D

   Explanation

   A: net.core.net_backlog does not exist AFAIK. There is a similar config called net.core.netdev_max_backlog. That one determines how many incoming packets can wait in queue on your network interface. D: net.core.rmem_max configures how much data your network interface can receive (or read), kind of like the allowed size of your mailbox. net.core.wmem_max configures the same for your "outbox" size. "sysctl -p" will load your new configuration from /etc/sysctl.conf.

   Source: Adapted from community discussion — makuziker

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4. Question 144 · 300 in bank

   An administrator recently updated the BIND software package and would like to review the default configuration that shipped with this version. Which of the following files should the administrator review?

   • A/etc/named.conf.rpmnew
   • B/etc/named.conf.rpmsave
   • C/etc/named.conf
   • D/etc/bind/bind.conf

   Show answer

   Answer: A

   Explanation

   Review /etc/named.conf.rpmnew to see the new default configuration that came with the BIND update. Use /etc/named.conf to view your current active configuration. Compare /etc/named.conf with /etc/named.conf.rpmnew to identify changes or updates. By examining /etc/named.conf.rpmnew, you can understand how the new default settings differ from your existing configuration.

   Source: Adapted from community discussion — Kashim

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5. Question 145 · 300 in bank

   A systems administrator received a request to change a user's credentials. Which of the following commands will grant the request?

   • Asudo passwd
   • Bsudo userdel
   • Csudo chage
   • Dsudo usermod

   Show answer

   Answer: A

   Explanation

   It would depend on how you define credentials, but sudo passwd would be used to specifically change the password. sudo usermod would be used to change other attributes about the user account.

   Source: Adapted from community discussion — Monty97

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6. Question 146 · 300 in bank

   A user is unable to log on to a Linux workstation. The systems administrator executes the following command:

   

   The command results in the following output:

   

   Which of the following should the systems administrator execute to fix the issue?

   • Achown -R user1:user1 /home/user1
   • Bsed -i '/:::/::/g' /etc/shadow
   • Cchgrp user1:user1 /home/user1
   • Dpasswd -u user1

   Show answer

   Answer: D

   Explanation

   The exclamation mark at the beginning of the user's hashed password indicates that the account is locked. The user may not log in with this password. This is typically used to temporarily disable an account. You can unlock the account by setting a new password for the user with `passwd`.

   Source: Adapted from community discussion — makuziker

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7. Question 147 · 300 in bank

   A systems administrator is tasked with creating an Ansible playbook to automate the installation of patches on several Linux systems. In which of the following languages should the playbook be written?

   • ASQL
   • BYAML
   • CHTML
   • DJSON

   Show answer

   Answer: B

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8. Question 148 · 300 in bank

   Select 2

   A systems administrator is working on a security report from the Linux servers. Which of the following commands can the administrator use to display all the firewall rules applied to the Linux servers? (Choose two.)

   • Aufw limit
   • Biptables -F
   • Csystemctl status firewalld
   • Dfirewall-cmd --list-all
   • Eufw status
   • Fiptables -A

   Show answer

   Answer: DE

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9. Question 149 · 300 in bank

   A Linux administrator intends to start using KVM on a Linux server. Which of the following commands will allow the administrator to load the KVM module as well as any related dependencies?

   • Amodprobe kvm
   • Binsmod kvm
   • Cdepmod kvm
   • Dhotplug kvm

   Show answer

   Answer: A

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10. Question 150 · 300 in bank

    The group owner of the /home/test directory would like to preserve all group permissions on files created in the directory. Which of the following commands should the group owner execute?

    • Achmod g+s /home/test
    • Bchgrp test /home/test
    • Cchmod 777 /home/test
    • Dchown -hR test /home/test

    Show answer

    Answer: A

    Explanation

    ommonly noted as SGID, this special permission has a couple of functions: If set on a file, it allows the file to be executed as the group that owns the file (similar to SUID) If set on a directory, any files created in the directory will have their group ownership set to that of the directory owner

    Source: Adapted from community discussion — 68c732d

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XK0-005 practice, question 141. 300 questions available.