CompTIA Security+ (SY0-501) — Question 991

A member of the admins group reports being unable to modify the "changes" file on a server.
The permissions on the file are as follows:

Permissions User Group File -
-rwxrw-r--+ Admins Admins changes
Based on the output above, which of the following BEST explains why the user is unable to modify the "changes" file?

Answer options

• A. The SELinux mode on the server is set to "enforcing."
• B. The SELinux mode on the server is set to "permissive."
• C. An FACL has been added to the permissions for the file.
• D. The admins group does not have adequate permissions to access the file.

Correct answer: C

Explanation

The correct answer is C because the presence of the '+' at the end of the file permissions indicates that an Access Control List (ACL) is applied, which may restrict access despite the standard permissions. Options A and B discuss SELinux modes, which do not directly relate to the user's inability to modify this specific file, while option D is incorrect as the admins group already has write permissions.