XK0-005 practice questions 41–50

1. Question 41 · 300 in bank

   A Linux administrator is adding a new configuration file to a Git repository. Which of the following describes the correct order of Git commands to accomplish the task successfully?

   • Apull -> push -> add -> checkout
   • Bpull -> add -> commit -> push
   • Ccheckout -> push -> add -> pull
   • Dpull -> add -> push -> commit

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   Answer: B

   Explanation

   The correct order of Git commands to add a new configuration file to a Git repository is: pull to get the latest changes from the remote repository. add to add the new configuration file to the staging area. commit to commit the changes to the local repository. push to push the changes to the remote repository. Therefore, the correct answer is: B. pull -> add -> commit -> push

   Source: Adapted from community discussion — linux_admin

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2. Question 42 · 300 in bank

   A systems administrator is tasked with mounting a USB drive on a system. The USB drive has a single partition, and it has been mapped by the system to the device /dev/sdb. Which of the following commands will mount the USB to /media/usb?

   • Amount /dev/sdb1 /media/usb
   • Bmount /dev/sdb0 /media/usb
   • Cmount /dev/sdb /media/usb
   • Dmount -t usb /dev/sdb1 /media/usb

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   Answer: A

   Explanation

   A. mount /dev/sdb1 /media/usb Explanation: The "mount" command is used to mount file systems, and in this case, we are using it to mount the USB drive. The device name for the USB drive is /dev/sdb, and since it has only one partition, the partition number is 1. Therefore, we need to mount /dev/sdb1 to the desired mount point, which is /media/usb. The correct command for this would be "mount /dev/sdb1 /media/usb". Option B is incorrect because the partition number is 1, not 0. Option C is incorrect because we need to specify the partition (/dev/sdb1) and not just the device (/dev/sdb). Option D is incorrect because "-t usb" is not a valid option for the mount command.

   Source: Adapted from community discussion — linux_admin

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3. Question 43 · 300 in bank

   User1 is a member of the accounting group. Members of this group need to be able to execute but not make changes to a script maintained by User2. The script should not be accessible to other users or groups. Which of the following will give proper access to the script?

   • Achown user2:accounting script.sh chmod 750 script.sh
   • Bchown user1:accounting script.sh chmod 777 script.sh
   • Cchown accounting:user1 script.sh chmod 057 script.sh
   • Dchown user2:accounting script.sh chmod u+x script.sh

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   Answer: A

   Explanation

   The correct option is A: chown user2:accounting script.sh chmod 750 script.sh. Explanation: The chown command will change the owner of the file to user2 and the group to accounting. The chmod command will change the file permissions to 750, which will allow the owner (user2) to read, write, and execute the file, members of the accounting group to read and execute the file, and deny all other users from accessing the file. This configuration will allow members of the accounting group to execute the script but not make any changes to it, which is the desired outcome.

   Source: Adapted from community discussion — linux_admin

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4. Question 44 · 300 in bank

   A systems administrator needs to verify whether the built container has the app.go file in its root directory. Which of the following can the administrator use to verify the root directory has this file?

   • Adocker image inspect
   • Bdocker container inspect
   • Cdocker exec <container_name> ls
   • Ddocker ps <container_name>

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   Answer: C

   Explanation

   C. docker exec ls This command runs the ls command inside the specified container and lists the contents of the current directory. The administrator can use this to verify whether the app.go file is present in the container's root directory. Option B (docker container inspect) would provide detailed information about the specified container, such as its configuration and state, but it would not show the contents of the container's file system. To view the files inside the container, the administrator should use the docker exec command to execute a shell command inside the container, such as ls to list the files in the root directory.

   Source: Adapted from community discussion — linux_admin

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5. Question 45 · 300 in bank

   A Linux administrator is reviewing changes to a configuration file that includes the following section:

   

   The Linux administrator is trying to select the appropriate syntax formatter to correct any issues with the configuration file. Which of the following should the syntax formatter support to meet this goal?

   • AMarkdown
   • BXML
   • CYAMLD. JSON

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   Answer: C

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6. Question 46 · 300 in bank

   When trying to log in remotely to a server, a user receives the following message:

   

   The server administrator is investigating the issue on the server and receives the following outputs:

   

   Which of the following is causing the issue?

   • AThe wrong permissions are on the user’s home directory.
   • BThe account was locked out due to three failed logins.
   • CThe user entered the wrong password.
   • DThe user has the wrong shell assigned to the account.

   Show answer

   Answer: D

   Explanation

   The /bin/false shell is a special shell that returns a non-zero exit status, effectively denying the user access to the system. This is often used for system accounts that do not need to interact with the system, or for temporarily disabling accounts.

   Source: Adapted from community discussion — linux_admin

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7. Question 47 · 300 in bank

   A systems administrator is investigating an issue in which one of the servers is not booting up properly. The journalctl entries show the following:

   

   Which of the following will allow the administrator to boot the Linux system to normal mode quickly?

   • AComment out the /opt/app filesystem in /etc/fstab and reboot.
   • BReformat the /opt/app filesystem and reboot.
   • CPerform filesystem checks on local filesystems and reboot.
   • DTrigger a filesystem relabel and reboot.

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   Answer: A

   Explanation

   Option A is the most appropriate choice because it will prevent the /opt/app filesystem from being mounted during boot, allowing the system to boot normally. The error message shows that the mount point for /opt/app is failing, and commenting out the entry in the /etc/fstab file will prevent the system from trying to mount the filesystem during boot. This is a quick solution to allow the system to boot normally and does not require any additional troubleshooting or repair.

   Source: Adapted from community discussion — linux_admin

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8. Question 48 · 300 in bank

   A Linux systems administrator receives reports from various users that an application hosted on a server has stopped responding at similar times for several days in a row. The administrator logs in to the system and obtains the following output: Output 1:

   

   Output 2:

   

   Output 3:

   

   Which of the following should the administrator do to provide the BEST solution for the reported issue?

   • AConfigure memory allocation policies during business hours and prevent the Java process from going into a zombie state while the server is idle.
   • BConfigure a different nice value for the Java process to allow for more users and prevent the Java process from restarting during business hours.
   • CConfigure more CPU cores to allow for the server to allocate more processing and prevent the Java process from consuming all of the available resources.
   • DConfigure the swap space to allow for spikes in usage during peak hours and prevent the Java process from stopping due to a lack of memory.

   Show answer

   Answer: D

   Explanation

   I choose answer D. The system killed the java process because of lack of memory, but no one has configured a swap partition! That will help. A swap partition is generally recommended as one of the two main partitions created during a linux installation.

   Source: Adapted from community discussion — MissAllen

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9. Question 49 · 300 in bank

   A Linux administrator found many containers in an exited state. Which of the following commands will allow the administrator to clean up the containers in an exited state?

   • Adocker rm --all
   • Bdocker rm $(docker ps -aq)
   • Cdocker images prune *
   • Ddocker rm --state exited

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   Answer: B

   Explanation

   B. docker rm $(docker ps -aq) Explanation: The command docker ps is used to list running containers. The option -a is used to list all containers, including those in an exited state. The option -q is used to display only the container IDs. The command docker rm is used to remove containers. By using $(docker ps -aq) as a parameter to docker rm, it will remove all containers returned by the docker ps -aq command, which includes containers in an exited state.

   Source: Adapted from community discussion — LKRISB

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10. Question 50 · 300 in bank

    A Linux administrator reviews a set of log output files and needs to identify files that contain any occurrence of the word denied. All log files containing entries in uppercase or lowercase letters should be included in the list. Which of the following commands should the administrator use to accomplish this task?

    • Afind . -type f -print | xrags grep -ln denied
    • Bfind . -type f -print | xrags grep -nv denied
    • Cfind . -type f -print | xrags grep -wL denied
    • Dfind . -type f -print | xrags grep -li denied

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    Answer: D

    Explanation

    D. find . -type f -print | xargs grep -li denied Explanation: find . -type f -print finds all files (-type f) in the current directory and its subdirectories (.) and prints their names (-print). xargs passes the list of file names to the grep command as arguments. grep -li denied searches for the word "denied" in the files, ignoring case (-i) and printing only the names of the files that contain the word (-l). Option A (grep -ln denied) would print the name of the file and the line number of the occurrence of "denied", but it doesn't meet the requirement of including both uppercase and lowercase occurrences. Option B (grep -nv denied) would print the name of the file and the line number of all the lines that do not contain "denied", which is not what is required. Option C (grep -wL denied) would print the name of the files that do not contain the exact word "denied" (i.e., it would exclude files that contain "permission denied" or "access denied"), which is also not what is required.

    Source: Adapted from community discussion — linux_admin

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XK0-005 practice, question 41. 300 questions available.