Security Systems & Electronic Access Flashcards

Which proximity card frequency is most commonly used by legacy 125 kHz prox credentials?

Answer: 125 kHz

Standard HID-style proximity cards operate at 125 kHz, whereas smart cards use 13.56 MHz.

What advantage do 13.56 MHz smart cards have over 125 kHz proximity cards?

Answer: They support encryption and mutual authentication

Smart card technologies such as MIFARE DESFire and iCLASS support cryptographic security that basic prox cards lack.

A fingerprint reader's 'false acceptance rate' (FAR) measures what?

Answer: Unauthorized users incorrectly accepted

FAR is the rate at which an impostor is wrongly granted access.

Multi-factor authentication at a door would most likely combine which pair?

Answer: PIN and card

A PIN (something you know) plus a card (something you have) uses two different factors.

What does an anti-passback feature prevent?

Answer: A credential from being reused to let another person in without exiting

Anti-passback requires a valid exit before a credential can be used to enter again, limiting card sharing.

Which statement about Bluetooth or smartphone-based credentials is most accurate?

Answer: They can often be issued and revoked remotely by an administrator

Mobile credentials are managed in software, so administrators can issue or revoke them remotely.

Why is it considered poor practice to store a facility's master credential data on an unencrypted 125 kHz card?

Answer: It can be easily cloned with inexpensive tools

Basic prox cards transmit a static ID that is trivially copied with common cloning devices.