RHCSA RHCSA File Permissions and ACLs 3

Question 1

Which command removes all ACL entries from the file /tmp/data.txt, reverting to standard permissions?

Accepted Answer

setfacl -b /tmp/data.txt

Answer

setfacl -b removes all extended ACL entries, leaving only the base POSIX permissions.

Question 2

When a directory has the setgid bit set, what happens to files created inside it?

Accepted Answer

New files inherit the group ownership of the directory

Answer

The setgid bit on a directory forces new files to inherit the directory's group rather than the creator's primary group.

Question 3

Which ls option displays a '+' symbol to indicate a file has extended ACLs?

Accepted Answer

ls -l

Answer

ls -l appends a '+' after the permission bits when extended ACLs are present on a file.

Question 4

A file is owned by user bob and group sales. User carol is not in group sales. Which minimal ACL command grants carol write access to the file?

Accepted Answer

setfacl -m u:carol:w file

Answer

setfacl -m u:carol:w adds a user-specific ACL entry granting write permission to carol.

Question 5

What does the ACL mask entry control?

Accepted Answer

The maximum effective permissions for named users and groups in the ACL

Answer

The ACL mask limits the maximum effective permissions granted to named users, named groups, and the owning group.

RHCSA Exam Practice Test