NCIDQ IDFX Practice Exam

How do interlocking dead bolts function as access control devices?

1. By sensing when someone enters the space

2. By securing the door bolt to prevent disengagement

3. By detecting weight on the door

4. By emitting sound waves when tampered

The correct answer is: By securing the door bolt to prevent disengagement

Interlocking dead bolts function as access control devices by securing the door bolt to prevent disengagement. This mechanism enhances the security of a door by requiring both bolts to engage for the door to be secured properly. When both components interlock, it creates a stronger barrier against unauthorized access, as it is much more difficult for someone to force open the door. This feature is particularly effective in improving the security of residential and commercial spaces, as it ensures that the door remains fully locked and cannot be easily compromised. The other options focus on different types of detection and sensing technologies that do not apply to the specific functionality of interlocking dead bolts, which are primarily mechanical locking mechanisms rather than electronic or sensor-based devices.