Practice Test Geeks(010-160) LPI Linux Essentials Practice Test
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Users and Group Management Flashcards

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  1. Which file defines default settings (like UMASK and EXPIRE) applied when creating new users?

    Answer: /etc/default/useradd

    /etc/default/useradd stores default values used by the useradd command, such as the default shell and home base directory.

  2. What is the purpose of the /etc/skel directory?

    Answer: It contains template files copied to a new user's home directory

    Files in /etc/skel are automatically copied into the home directory of any newly created user.

  3. How would you add an existing user 'alice' to an existing group 'developers'?

    Answer: usermod -aG developers alice

    usermod -aG appends the group to alice's supplementary groups without removing existing ones; omitting -a would replace all groups.

  4. What UID is typically assigned to the root user on a Linux system?

    Answer: 0

    The root user always has UID 0, which grants superuser privileges on a Linux system.

  5. Which command displays all groups a user belongs to?

    Answer: Both A and C are correct

    Both 'groups username' and 'id -G username' (without -n flag) display the groups a user belongs to.

  6. What does a UID range of 1-999 (or 1-500 on older systems) typically represent?

    Answer: System/service accounts

    Low UIDs (1-999) are reserved for system and service accounts like daemon, bin, and www-data.

  7. Which command changes the primary group of user 'bob' to 'marketing'?

    Answer: usermod -g marketing bob

    usermod -g (lowercase) changes the primary group, while -G (uppercase) modifies supplementary groups.