010-160 - LPI Linux Essentials Users and Group Management Questions and Answers

Question 1

A system administrator needs to create a new user named 'jdoe' and ensure their home directory is created at the same time. Which command will accomplish this?

Accepted Answer

useradd -m jdoe

Answer

useradd jdoe

Answer

useradd -h /home/jdoe jdoe

Answer

adduser --create-home jdoe

Question 2

Which file contains the user's encrypted password and password aging information?

Accepted Answer

/etc/shadow

Answer

/etc/passwd

Answer

/etc/group

Answer

/etc/login.defs

Question 3

An administrator wants to add an existing user, 'sara', to the supplementary group 'developers'. Which of the following commands is the correct and safest way to do this without affecting her current group memberships?

Accepted Answer

usermod -a -G developers sara

Answer

usermod -G developers sara

Answer

usermod -g developers sara

Answer

groupmod -a -m developers sara

Question 4

A project is complete and the user account 'tempuser' is no longer needed. A system administrator needs to delete the user and also remove their home directory and all its contents. Which command should be used?

Accepted Answer

userdel -r tempuser

Answer

userdel tempuser

Answer

rmuser tempuser --delete-home

Answer

deluser tempuser

Question 5

What is the primary purpose of a user's primary group in Linux?

Accepted Answer

To set the default group ownership for files and directories the user creates.

Answer

To grant administrative privileges to the user.

Answer

To define the user's default login shell.

Answer

To list all the groups the user can access.

Question 6

A user reports they cannot access a shared project file located at `/srv/data/report.docx`. The file's permissions are `rw-r-----` and its ownership is `jdoe:project`. The user is a member of the `project` group. What is the most likely reason they cannot access the file?

Accepted Answer

The user needs to log out and log back in for group changes to take effect.

Answer

The file is owned by another user.

Answer

The user is not the owner of the file.

Answer

The `project` group does not have execute permissions on the file.