CML Access Control & Electromechanical Systems Flashcards

What does 'Wiegand' refer to in access control systems?

Answer: A communication protocol used between card readers and access control panels

Wiegand is a widely-used serial data protocol that transmits card data (typically 26-bit format) from a reader to an access control panel.

Which type of credential provides the HIGHEST security against cloning attacks in modern access control?

Answer: 13.56 MHz smart cards with mutual authentication (e.g., MIFARE DESFire)

13.56 MHz smart cards using encrypted mutual authentication are significantly harder to clone than older 125 kHz proximity cards, which can be copied with inexpensive readers.

A 'request to exit' (REX) device in an access-controlled door is used to:

Answer: Signal the access control system that an authorized user is exiting, preventing a door-forced alarm

A REX device signals the panel that egress is intentional, which suppresses the door-forced alarm that would otherwise trigger when the door opens from the secured side.

What is 'tailgating' (also called 'piggybacking') in physical security?

Answer: An unauthorized person following an authorized person through an access-controlled door without using their own credential

Tailgating is a social engineering vulnerability where an unauthorized individual gains access by following closely behind a credential holder through a secured door.

When a CML installs an electric strike on a hollow metal door frame, which step is critical to prevent premature failure?

Answer: Ensuring the strike is rated for the door's swing direction (LH, RH, LHR, RHR) and properly mounting with the supplied fasteners

Installing an electric strike with the wrong handing or using incorrect fasteners can cause misalignment, mechanical failure, and void the product warranty.

Which ANSI grade of cylindrical lockset is recommended for commercial high-traffic exterior access-controlled doors?

Answer: ANSI Grade 1

ANSI Grade 1 is the highest commercial-grade rating and is required for high-traffic exterior doors to ensure durability and security under demanding conditions.