CompTIA Security+ Question J-56

A malicious person gained access to a datacenter by ripping the proximity badge reader off the wall near the datacenter entrance. This caused the electronic locks on the datacenter door to release because the:

A. badge reader was improperly installed.
B. system was designed to fail open for life-safety.
C. system was installed in a fail closed configuration.
D. system used magnetic locks and the locks became demagnetized.

Answer: B

It describes a design the lock to fail open for life safety, causing the door to stay open when power is lost – in this case the proximity badge reader was ripped off the wall.