Free CRL Security Systems & Electronic Access Questions and Answers — Questions and Answers
Question 1: Which of the following is a common component of an electronic access control system?
- Mechanical deadbolt
- Magnetic stripe reader (Correct answer)
- Strike plate
- Tumbler pins
Correct answer: Magnetic stripe reader
A magnetic stripe reader is a common component of an electronic access control system. These readers are used to scan cards with magnetic stripes, which contain encoded access credentials. When a valid card is swiped, the reader communicates with the access control panel to grant or deny entry, making it a fundamental part of many electronic security setups.
Question 2: What type of lock is typically used with keypads or card readers?
- Wafer lock
- Cam lock
- Electromagnetic lock (Correct answer)
- Disc detainer
Correct answer: Electromagnetic lock
Electromagnetic locks (maglocks) are typically used with keypads or card readers in electronic access control systems. These locks consist of an electromagnet mounted on the door frame and an armature plate on the door. When power is applied, the magnet holds the door securely shut, and access is granted by momentarily cutting power via a keypad, card reader, or other electronic credential.
Question 3: Which security feature records entries and exits in an electronic access system?
- Tamper switch
- Strike sensor
- Audit trail (Correct answer)
- Door closer
Correct answer: Audit trail
An audit trail is a crucial security feature in electronic access systems that records entries and exits. It logs details such as who accessed a door, when they did so, and whether access was granted or denied. This data is invaluable for security monitoring, investigating incidents, and maintaining accountability within a controlled environment.
Question 4: In electronic access systems, what does 'fail-secure' mean?
- Lock disengages during fire alarms
- Door remains unlocked during power failure
- Door stays locked during power failure (Correct answer)
- Lock is permanently open
Correct answer: Door stays locked during power failure
In electronic access systems, 'fail-secure' means that the door stays locked during a power failure. This design prioritizes security, ensuring that an unauthorized person cannot gain access if the system loses power. Conversely, 'fail-safe' systems unlock during a power failure, prioritizing safety and egress in emergencies.
Question 5: What is the primary role of a Request-to-Exit (REX) sensor?
- Prevent reentry from outside
- Trigger fire alarm
- Allow egress by detecting movement (Correct answer)
- Monitor video feeds
Correct answer: Allow egress by detecting movement
The primary role of a Request-to-Exit (REX) sensor is to allow egress (exit) from a secured area by detecting movement. When a person approaches the door from the inside, the REX sensor detects their presence and signals the access control system to momentarily unlock the door. This enables free exit without needing a credential, while maintaining security for entry.
Question 6: Which standard governs installation and performance of electronic access control systems?
- NFPA 101
- UL 294 (Correct answer)
- ISO 9001
- IEC 61850
Correct answer: UL 294
UL 294 is the specific Underwriters Laboratories standard that establishes requirements for the construction, performance, and testing of electronic access control systems. It ensures these systems operate safely and effectively, addressing aspects like security, reliability, and environmental performance. Compliance with UL 294 is crucial for manufacturers and installers to meet industry safety and operational benchmarks.
Question 7: Biometric systems identify users based on:
- RFID chips
- Passwords
- Physical characteristics (Correct answer)
- Numeric codes
Correct answer: Physical characteristics
Biometric systems are designed to identify individuals by analyzing unique biological or behavioral traits. These physical characteristics can include fingerprints, facial patterns, iris scans, or even voice recognition. This method provides a high level of security by verifying who a person is, rather than what they possess (like a card) or what they know (like a password).
Question 8: Which device prevents door movement when power is lost in a fail-safe system?
- Mechanical latch (Correct answer)
- Tamper switch
- Circuit breaker
- Fire alarm panel
Correct answer: Mechanical latch
In a fail-safe system, the door is designed to unlock and allow egress in the event of a power failure, prioritizing life safety. However, a mechanical latch is still essential to secure the door when power is present and the system is operational. When power is lost, the electronic locking mechanism releases, but the mechanical latch ensures the door remains closed until manually opened, preventing uncontrolled swinging or minor drafts from opening it.
Question 9: Which of the following access credentials is most resistant to duplication?
- Magnetic stripe card
- PIN code
- Biometric data (Correct answer)
- Mechanical key
Correct answer: Biometric data
Biometric data, such as fingerprints or iris scans, is inherently unique to an individual and extremely difficult to duplicate or forge. Unlike magnetic stripe cards, PIN codes, or mechanical keys, which can be lost, stolen, or copied, biometric identifiers are tied directly to the person. This makes biometric access credentials the most resistant to unauthorized duplication, offering a higher level of security.
Free CRL Security Systems & Electronic Access Questions and Answers
Which of the following is a common component of an electronic access control system?