RHCSA RHCSA User and Group Management 2

Question 1

Which file contains the encrypted password hashes for local user accounts on RHEL?

Accepted Answer

/etc/shadow

Answer

/etc/shadow stores encrypted password hashes and is readable only by root.

Question 2

A user needs to be added to the 'wheel' group without removing them from their existing groups. Which command accomplishes this?

Accepted Answer

usermod -aG wheel alice

Answer

usermod -aG appends the group to the user's supplementary groups without removing existing ones.

Question 3

What is the default password aging maximum number of days set for a new user created with useradd on RHEL?

Accepted Answer

99999

Answer

By default, useradd sets PASS_MAX_DAYS to 99999, effectively meaning the password never expires.

Question 4

Which command forces a user named 'bob' to change their password on next login?

Accepted Answer

Both A and B

Answer

Both 'passwd -e bob' and 'chage -d 0 bob' set the password last-changed date to epoch 0, forcing a change on next login.

Question 5

What does the 'nologin' shell (e.g., /sbin/nologin) do when a user tries to log in interactively?

Accepted Answer

Displays a message and refuses the interactive login

Answer

/sbin/nologin prints a polite message and exits, preventing interactive logins while still allowing services like FTP.

RHCSA Exam Practice Test