Which of the following is a way to protect server operating systems from a short term contractor?

Biometric devices control physical access to a location or a device, not the specific logon hours or permissions within an operating system.

Limiting logon hours for a short-term contractor ensures that their access to the server operating system is restricted to designated work times, automatically preventing unauthorized access outside those specific hours and minimizing risk.

Mantraps are physical security vestibules that control entry to a secure area, not a method for protecting an operating system from a logged-in user.

Rack doors provide physical security for server hardware within a rack, but they do not control a contractor's access to the operating system once physical or network access is established.