Access Control Systems & Surveillance Flashcards

In the DORI standard for camera performance, which level needs the highest pixel density on the target?

Answer: Identification

Identification, meaning confirming who a specific person is beyond reasonable doubt, needs far more pixels per foot than detection, observation, or recognition.

What is the main benefit of Power over Ethernet (PoE) in IP camera installations?

Answer: Sends power and data over one network cable

PoE carries both electrical power and network data over a single Ethernet cable, which simplifies installation.

Which biometric metric describes the point where the false acceptance rate equals the false rejection rate?

Answer: Crossover error rate (CER)

The CER (also called the equal error rate) is where FAR and FRR are equal, and a lower CER means a more accurate system.

A data center requires two authorized staff to badge in within a short time window before the vault door opens. What control is this?

Answer: Two-person (dual) authorization

Two-person authorization requires two separate authorized people, so no single insider can get access alone.

Which combination counts as true multi-factor authentication?

Answer: A card and a fingerprint

A card (something you have) plus a fingerprint (something you are) combines two different factor categories.

A camera needs to monitor a perimeter fence line at night with no visible lighting. What is the most suitable choice?

Answer: A camera with an infrared illuminator or a thermal camera

IR illumination or thermal imaging lets the camera see in darkness without visible light that would alert intruders.

What is the main purpose of an access control system's audit trail?

Answer: To record who accessed which door and when, for investigations

The audit trail logs every access event and alarm, which supports investigations, compliance, and accountability.