010-160 Users and Group Management 3

Question 1

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

Accepted Answer

/etc/default/useradd

Answer

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

Question 2

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

Accepted Answer

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

Answer

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

Question 3

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

Accepted Answer

usermod -aG developers alice

Answer

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

Question 4

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

Accepted Answer

0

Answer

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

Question 5

Which command displays all groups a user belongs to?

Accepted Answer

Both A and C are correct

Answer

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

(010-160) LPI Linux Essentials Practice Test