Card Reader & Biometric Access Flashcards
7 cards from real CST practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Card Reader & Biometric Access flashcards as text
What does a False Acceptance Rate (FAR) measure in biometric systems?
Answer: The percentage of unauthorized users incorrectly granted access
FAR measures how often an unauthorized individual is incorrectly accepted by the biometric system, representing a security failure.
In a dual-technology card reader, what is the purpose of combining two reader technologies?
Answer: To require two different credential types for enhanced security
Dual-technology readers require two credential types (e.g., proximity + smart card) to be presented simultaneously, significantly raising the bar for unauthorized access.
A biometric reader is experiencing a high False Rejection Rate (FRR). The FIRST corrective action should be to:
Answer: Re-enroll affected users with fresh, higher-quality templates
High FRR is often caused by poor-quality enrollment templates; re-enrolling users with careful, high-quality scans typically resolves the issue.
What is the purpose of 'anti-passback' in an access control system?
Answer: Preventing a card from being used to exit before it has been used to enter
Anti-passback prevents a credential from being used to re-enter (or exit) a zone unless the corresponding entry (or exit) event was first recorded, stopping card sharing.
Which power standard is commonly used to provide both data and power to networked access control readers and IP cameras?
Answer: PoE (Power over Ethernet)
PoE delivers electrical power alongside data over a standard Ethernet cable, simplifying installation of network-connected access devices.
When installing a card reader on an exterior wall, which environmental rating should be verified to ensure outdoor survivability?
Answer: IP65 or higher
An IP65 rating confirms the device is dust-tight and protected against water jets, suitable for outdoor or harsh environment installation.
A card reader is mounted at a height that is inaccessible to wheelchair users. This violates requirements under which U.S. regulation?
Answer: Americans with Disabilities Act (ADA)
The ADA specifies maximum reach ranges for operable controls, requiring card readers to be mounted within accessible reach for wheelchair users.