Choice "C" is correct. Passwords and firewalls are both examples of electronic access controls.Choices "b", "d", "a" are incorrect: The correct answer should exclude I. Restricted access to the hotel's front desk is a physical access control. The correct answer should exclude II. A hot site is a part of the disaster recovery plan; it is not an electronic access control.The correct answer should include III. Passwords are electronic access controls that authenticate user access to a system, its applications and data.The correct answer should include IV. A firewall is an electronic access control that prevents unauthorized access to a system, its applications and data.
