LCA User & Permission Management 5

Question 1

Which command displays all groups a user 'eve' belongs to?

Accepted Answer

Both B and C are correct

Answer

Both 'groups eve' and 'id -Gn eve' list all group memberships for a specified user.

Question 2

What is the default umask value for regular users on most Linux distributions?

Accepted Answer

0022

Answer

The default umask for regular users is typically 0022, giving new files 644 and new directories 755 permissions.

Question 3

Which command grants user 'frank' the ability to run any command as root via sudo without a password prompt?

Accepted Answer

visudo and add 'frank ALL=(ALL) NOPASSWD: ALL'

Answer

The correct and safe method is using visudo to edit /etc/sudoers, which validates syntax before saving.

Question 4

What does the 'x' in the password field of /etc/passwd indicate?

Accepted Answer

The password is stored in /etc/shadow

Answer

An 'x' in the password field of /etc/passwd means the actual hashed password is stored in the shadowed /etc/shadow file.

Question 5

A file has ACL permissions. Which command displays the ACL entries for file 'data.txt'?

Accepted Answer

getfacl data.txt

Answer

getfacl displays the Access Control List entries for a file, including extended ACL permissions beyond standard rwx.

(LCA) Certified Linux Administrator Practice Test