[September-2023]New Braindump2go XK0-005 PDF and XK0-005 VCE Dumps(663-680)

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‣ Vendor: CompTIA 

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‣ Exam Code: XK0-005 

‣ Exam Name: CompTIA Linux+ XK0-005 Certification Exam 

‣ New Updated Questions from Braindump2go 

‣ (Updated in September/2023) 

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QUESTION 663 

As part of the requirements for installing a new application, the swappiness parameter needs to be changed to 0. This 

change needs to persist across reboots and be applied immediately. A Linux systems administrator is performing this 

change. Which of the following steps should the administrator complete to accomplish this task? 

A. echo "vm.swappiness=0" >> /etc/sysctl.conf && sysctl -p 

B. echo "vm.swappiness=0" >> /proc/meminfo && sysctl -a 

C. sysctl -v >> /proc/meminfo && echo "vm.swapiness=0" 

D. sysctl -h "vm.swapiness=0" && echo /etc/vmswapiness 

Answer: A 

Explanation: 

To persist the parameter value indefinitely -- that is, until the user wants to change it again – they must manually update 

the sysctl.conf file. 

The command calls the nano text editor, which lets the user edit the file directly in the terminal. When the file opens, the 

user scrolls to the end of the text and adds the following setting. 

"vm.swappiness=0" 

>> append /etc/sysctl.conf && sysctl -p 

sysctl -p ( ( allows you to load the settings from a configuration file ) 

QUESTION 664 

A systems administrator wants to list all local accounts in which the UID is greater than 500. Which of the following 

commands will give the correct output? 

A. find /etc/passwd -size +500 

B. cut -d: -f1 /etc/passwd > 500 

C. awk -F: '$3 > 500 {print $1}' /etc/passwd 

D. sed '/UID/' /etc/passwd < 500 

Answer: C 

QUESTION 665 

A systems administrator is tasked with changing the default shell of a system account in order to disable iterative 

logins. Which of the following is the BEST option for the administrator to use as the new shell? 

A. /sbin/nologin 

B. /bin/sh 

C. /sbin/setenforce 

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D. /bin/bash 

Answer: A 

Explanation: 

In order to limit the login we can add /bin/false to the end of the string (in the file /etc/passwd ), thus we will have a 

return code = 1 (when the user tries to open the terminal it will close immediately ). 

Another method, in the same way, we add /sbin/nologin (in this case I will have the message "This account is currently 

not available" ) 

QUESTION 666 

A junior systems administrator recently installed an HBA card in one of the servers that is deployed for a production 

environment. Which of the following commands can the administrator use to confirm on which server the card was 

installed? 

A. lspci | egrep 'hba|fibr' 

B. lspci | zgrep 'hba|fibr' 

C. lspci | pgrep 'hba|fibr' 

D. lspci | 'hba|fibr' 

Answer: A 

Explanation: 

Egrep is a shortcut to the grep -E command. The -E option allows the use of regular expressions for text filtering. For 

example: +, |, () etc. 

QUESTION 667 

A new disk was presented to a server as /dev/sdd. The systems administrator needs to check if a partition table is on 

that disk. Which of the following commands can show this information? 

A. lsscsi 

B. fdisk 

C. blkid 

D. partprobe 

Answer: B 

QUESTION 668 

A systems administrator wants to upgrade /bin/someapp to a new version, but the administrator does not know the 

package name. Which of the following will show the RPM package name that provides that binary file? 

A. rpm -qf /bin/someapp 

B. rpm -Vv /bin/someapp 

C. rpm -p /bin/someapp 

D. rpm -i /bin/someapp 

Answer: A 

Explanation: 

Use the command 'rpm -qf' or 'yum whatprovides' to get the package name from a binary file or library file on the 

server. 

QUESTION 669 

A systems administrator is installing various software packages using a package manager. Which of the following 

commands would the administrator use on the Linux server to install the package? 

A. winget 

B. softwareupdate 

C. yum-config 




D. apt 

Answer: D 

QUESTION 670 

Users are unable to create new files on the company's FTP server, and an administrator is troubleshooting the issue. 

The administrator runs the following commands: 

Which of the following is the cause of the issue based on the output above? 

A. The users do not have the correct permissions to create files on the FTP server. 

B. The ftpusers filesystem does not have enough space. 

C. The inodes is at full capacity and would affect file creation for users. 

D. ftpusers is mounted as read only. 

Answer: C 

QUESTION 671 

An administrator started a long-running process in the foreground that needs to continue without interruption. Which of 

the following keystrokes should the administrator use to continue running the process in the background? 

A. bg 

B. bg 

C. jobs -1 

D. bg & 

Answer: A 

Explanation: 

bg - run jobs in the background 

& ampersand single ampersand & causes the command to execute in the background. 

QUESTION 672 

A Linux administrator has physically added a new RAID adapter to a system. Which of the following commands should 

the Linux administrator run to confirm that the device has been recognized? (Choose two.) 

A. rmmod 

B. ls -ll /etc 

C. lshw -class disk 

D. pvdisplay 

E. rmdir /dev 

F. dmesg 

Answer: CF 




QUESTION 673 

Based on the given command: 

find /home/user1 -type f -name "*.txt" -size +100M 

Which of the following will the command accomplish? 

A. It finds all the files ending with .txt with a size less than 100MB in /home/user1 directory. 

B. It finds all the files ending with .txt with a size of 100MB in /home/user1 directory. 

C. It finds all the directories with .txt files with a size of 100MB in /home folder. 

D. It finds all the files ending with .txt with a size of over 100MB in /home/user1 directory. 

Answer: D 

QUESTION 674 

While inspecting a recently compromised Linux system, the administrator identified a number of processes that should 

not have been running: 

Which of the following commands should the administrator use to terminate all of the identified processes? 

A. pkill -9 -f "upload*.sh" 

B. kill -9 "upload*.sh" 

C. killall -9 "upload*.sh" 

D. skill -9 "upload*.sh" 

Answer: A 

QUESTION 675 

A senior Linux administrator has created several scripts that will be used to install common system applications. These 

scripts are published to a repository to share with the systems team. A junior Linux administrator needs to retrieve the 

scripts and make them available on a local workstation. Which of the following Git commands should the junior Linux 

administrator use to accomplish this task? 

A. fetch 

B. checkout 

C. clone 

D. branch 

Answer: C 

QUESTION 676 

Users are reporting that writes on a system configured with SSD drives have been taking longer than expected, but 

reads do not seem to be affected. A Linux systems administrator is investigating this issue and working on a solution. 

Which of the following should the administrator do to help solve the issue? 

A. Run the corresponding command to trim the SSD drives. 

B. Use fsck on the filesystem hosted on the SSD drives. 

C. Migrate to high-density SSD drives for increased performance. 

D. Reduce the amount of files on the SSD drives. 

Answer: A 

Explanation: 

TRIM is the function that allows you to improve the long-lasting performance of SSDs by better managing the various 




reads and writes of the cells, so you will not only increase the life of the SSD but also speed up the read and write 

operations. 

SSD TRIM is an Advanced Technology Attachment (ATA) command that enables an operating system to inform a 

NAND flash solid-state drive (SSD) which data blocks it can erase because they are no longer in use. The use of TRIM 

can improve the performance of writing data to SSDs and contribute to longer SSD life 

QUESTION 677 

A Linux engineer needs to block an incoming connection from the IP address 2.2.2.2 to a secure shell server and 

ensure the originating IP address receives a response that a firewall is blocking the connection. Which of the following 

commands can be used to accomplish this task? 

A. iptables -A INPUT -p tcp --dport ssh -s 2.2.2.2 -j DROP 

B. iptables -A INPUT -p tcp --dport ssh -s 2.2.2.2 -j RETURN 

C. iptables -A INPUT -p tcp --dport ssh -s 2.2.2.2 -j REJECT 

D. iptables -A INPUT -p tcp --dport ssh -s 2.2.2.2 -j QUEUE 

Answer: C 

Explanation: 

In general, use REJECT if you want the other side to know that the port is unreachable, and DROP for connections to 

hosts you don't want to see. 

QUESTION 678 

A systems administrator detected corruption in the /data file system. Given the following output: 

Which of the following commands can the administrator use to BEST address this issue? 

A. 

B. 

C. 

D. 




Answer: C 

QUESTION 679 

A user reported issues when trying to log into a Linux server. The following outputs were received: 

Given the outputs above, which of the following is the reason the user is unable to log in to the server? 

A. User1 needs to set a long password. 

B. User1 is in the incorrect group. 

C. The user1 shell assignment is incorrect. 

D. The user1 password is expired. 

Answer: B 

QUESTION 680 

A junior administrator updated the PostgreSQL service unit file per the database administrator's recommendation. The 

service has been restarted, but changes have not been applied. Which of the following should the administrator run for 

the changes to take effect? 

A. systemctl get-default 

B. systemctl daemon-reload 

C. systemctl enable postgresql 

D. systemctl mask postgresql 

Answer: B

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