Linux Essentials – Chapter 14 Exam Answers 2019 + PDF file

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  1. UIDs 1-500 are usually reserved for what kind of users?
    • System accounts, such as server processes*
    • Are not used for user accounts, but for group accounts
    • Log-in (human) users
    • Remote log-in accounts
  2. If a user is deleted, the files and directories that the user owned…
    • …will show a UID as the owner, but not user name.*
    • …will have no UID owner.
    • …are deleted as well.
    • …will have no user owner.
  3. Which of the following options for the useradd command allows root to specify the UID to be associated with the account?
    • -U
    • -u*
    • -G
    • -g
  4. Which of the following options for the useradd command allows root to specify supplementary groups the user will be a member of?
    • -G*
    • -u
    • U
    • -g
  5. On a system that does not use UPG, the useradd command will also create a user group. For example, user bob, group bob.
    True or False?

    • True
    • False*
  6. The useradd command will create a home directory by default for a user.
    True or False?

    • True*
    • False
  7. The usermod command can be used to do all of the following except…
    • …add a user to a supplementary group.
    • …change the user’s MAX and MIN password settings.*
    • …change the user’s home directory.
    • …change the user’s UID and GID.
  8. Which of the following commands will add the group extra to the user bob’s secondary groups in addition to bob’s current secondary groups?
    • usermod -G extra bob
    • usermod -a extra bob
    • usermod -aG extra bob*
    • usermod -ag bob extra
  9. Which option for the usermod command can be used to specify a user’s group ID (either primary or secondary)? (choose two)
    • -g*
    • -G*
    • -s
    • -S
  10. For non-root users, the passwd command can only be used to change the password of the user running the command.True or False?
    • True*
    • False
  11. The userdel command will…
    • …delete the user account, but leave the user’s files by default.*
    • …will prompt before deleting each file owned by a user.
    • …automatically delete a user and the user’s home directory and its contents.
    • …automatically delete a user and all the files owned by that user.
  12. The groupmod command can be used to change a group name.
    True or False?

    • True*
    • False
  13. The groupmod command can be used to change a group GID.
    True or False?

    • True*
    • False
  14. The groupmod command can be used to add users to a group.
    True or False?

    • True
    • False*
  15. Which of the following commands can be used to modify a group?
    • groupadd
    • modgroup
    • addgroup
    • groupmod*
  16. Which command can be used to determine a user’s most recent log in?
    • last*
    • history
    • shell
    • login
  17. Which of the following files contains encrypted user password information?
    • /etc/usr
    • /etc/shadow*
    • /etc/passwd
    • /etc/group
  18. Which of the following files contains user IDs?
    • /etc/group
    • /etc/shadow
    • /etc/usr
    • /etc/passwd*
  19. Which of the following files does the groupadd command use to determine the new GID when a GID isn’t specified?
    • /etc/shadow
    • /etc/group*
    • /etc/passwd
    • /etc/usr
  20. Which of the following commands, run as root, will prevent the user bob from logging in?
    • usermod -d bob
    • usermod -l bob
    • usermod -D bob
    • usermod -L bob*
  21. What directory contains user’s home directories?
    • /
    • /home*
    • /rootfs
    • /user

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