Electronic Security Technician Certification
Exam Practice Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. Which type of fire alarm device is designed to detect smoke?
A. Heat detector
B. Smoke detector
C. Pull station
D. Horn/strobe
Rationale: Smoke detectors are designed to detect particles from
combustion, making them essential for early fire detection.
2. What is the primary purpose of an access control system?
A. Monitor environmental conditions
B. Restrict and monitor access to authorized personnel
C. Detect smoke
D. Record video surveillance
, Rationale: Access control systems manage entry and exit, ensuring
only authorized individuals gain access to secured areas.
3. Which type of surveillance camera is best for low-light conditions?
A. PTZ camera
B. Dome camera
C. Infrared (IR) camera
D. Box camera
Rationale: IR cameras use infrared light to capture images in dark or
low-light environments.
4. What is the function of a motion detector?
A. Record video footage
B. Activate door locks
C. Detect movement within a protected area
D. Measure temperature changes
Rationale: Motion detectors sense movement and trigger alarms or
alerts in security systems.
5. Which frequency range is commonly used for wireless security
sensors?
A. 300–400 MHz
B. 433–900 MHz
C. 1–2 GHz
D. 2.4–5 GHz
, Rationale: Wireless security sensors often operate in the 433–900
MHz range to communicate with control panels reliably.
6. What is a primary benefit of a video management system (VMS)?
A. Detect smoke
B. Organize, store, and analyze video footage from multiple cameras
C. Restrict physical access
D. Detect unauthorized network access
Rationale: VMS software enables centralized monitoring, storage,
and analysis of video surveillance data.
7. Which type of alarm zone requires immediate notification of
authorities?
A. Interior perimeter
B. Delay zone
C. Instant zone
D. Fire supervisory zone
Rationale: Instant zones trigger immediate alarms without delay to
notify authorities quickly.
8. In a security system, what does a “normally closed” (NC) circuit
indicate?
A. Circuit is open at rest
B. Circuit is complete at rest
C. Circuit is shorted
D. Circuit is fused
, Rationale: NC circuits remain closed when normal and open when an
alarm condition occurs.
9. What is the function of a surge protector in a security system?
A. Amplify signals
B. Protect equipment from voltage spikes
C. Convert AC to DC
D. Record alarm events
Rationale: Surge protectors prevent damage from electrical surges,
prolonging equipment lifespan.
10. Which type of cabling is typically used for analog CCTV systems?
A. Fiber optic
B. Coaxial
C. Cat6 Ethernet
D. Shielded twisted pair
Rationale: Coaxial cables transmit analog video signals efficiently
with minimal interference.
11. In access control, what does the acronym “HID” commonly refer
to?
A. High-Input Device
B. Human Interface Device
C. Hazard Identification Device
D. High-Intensity Detector
Exam Practice Questions And Correct
Answers (Verified Answers) Plus Rationales
2026 Q&A | Instant Download Pdf
1. Which type of fire alarm device is designed to detect smoke?
A. Heat detector
B. Smoke detector
C. Pull station
D. Horn/strobe
Rationale: Smoke detectors are designed to detect particles from
combustion, making them essential for early fire detection.
2. What is the primary purpose of an access control system?
A. Monitor environmental conditions
B. Restrict and monitor access to authorized personnel
C. Detect smoke
D. Record video surveillance
, Rationale: Access control systems manage entry and exit, ensuring
only authorized individuals gain access to secured areas.
3. Which type of surveillance camera is best for low-light conditions?
A. PTZ camera
B. Dome camera
C. Infrared (IR) camera
D. Box camera
Rationale: IR cameras use infrared light to capture images in dark or
low-light environments.
4. What is the function of a motion detector?
A. Record video footage
B. Activate door locks
C. Detect movement within a protected area
D. Measure temperature changes
Rationale: Motion detectors sense movement and trigger alarms or
alerts in security systems.
5. Which frequency range is commonly used for wireless security
sensors?
A. 300–400 MHz
B. 433–900 MHz
C. 1–2 GHz
D. 2.4–5 GHz
, Rationale: Wireless security sensors often operate in the 433–900
MHz range to communicate with control panels reliably.
6. What is a primary benefit of a video management system (VMS)?
A. Detect smoke
B. Organize, store, and analyze video footage from multiple cameras
C. Restrict physical access
D. Detect unauthorized network access
Rationale: VMS software enables centralized monitoring, storage,
and analysis of video surveillance data.
7. Which type of alarm zone requires immediate notification of
authorities?
A. Interior perimeter
B. Delay zone
C. Instant zone
D. Fire supervisory zone
Rationale: Instant zones trigger immediate alarms without delay to
notify authorities quickly.
8. In a security system, what does a “normally closed” (NC) circuit
indicate?
A. Circuit is open at rest
B. Circuit is complete at rest
C. Circuit is shorted
D. Circuit is fused
, Rationale: NC circuits remain closed when normal and open when an
alarm condition occurs.
9. What is the function of a surge protector in a security system?
A. Amplify signals
B. Protect equipment from voltage spikes
C. Convert AC to DC
D. Record alarm events
Rationale: Surge protectors prevent damage from electrical surges,
prolonging equipment lifespan.
10. Which type of cabling is typically used for analog CCTV systems?
A. Fiber optic
B. Coaxial
C. Cat6 Ethernet
D. Shielded twisted pair
Rationale: Coaxial cables transmit analog video signals efficiently
with minimal interference.
11. In access control, what does the acronym “HID” commonly refer
to?
A. High-Input Device
B. Human Interface Device
C. Hazard Identification Device
D. High-Intensity Detector
