SY0-301 Question #880: Real Exam Question with Answer & Explanation

The correct answer is B: system was designed to fail open for life-safety.. A fail-open (also called fail-safe) system releases its locks when it loses power or connectivity - a design requirement for life-safety so that people are never trapped in a facility during an emergency (fire, power failure). When the attacker physically removed the badge reader

Question

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.

Options

Abadge reader was improperly installed.
Bsystem was designed to fail open for life-safety.
Csystem was installed in a fail closed configuration.
Dsystem used magnetic locks and the locks became demagnetized.

Explanation

A fail-open (also called fail-safe) system releases its locks when it loses power or connectivity - a design requirement for life-safety so that people are never trapped in a facility during an emergency (fire, power failure). When the attacker physically removed the badge reader, the circuit was broken, causing the electronic lock to interpret the loss of signal as a safe/emergency condition and unlock. A fail-closed system (C) would have kept the door locked upon losing power, which would have prevented this attack but can trap occupants. Improper installation (A) and magnetic demagnetization (D) are not consistent with the described scenario.

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