UTAH BURGLAR ALARM QUALIFYING AGENT EXAM LATEST (2026) COMPLETE
QUESTIONS WITH 100% VERIFIED SOLUTIONS,
Question 1
Which UL Standard specifically provides the safety requirements for intrusion detectors?
A) UL 634
B) UL 681
C) UL 639
D) UL 1076
E) UL 1981
Correct Answer: C) 639
Rationale: UL 639 is the standard for Intrusion-Detection Units, which includes PIR,
microwave, and ultrasonic motion sensors.
Question 2
Which UL Standard covers connectors and switches, such as magnetic contacts used on doors
and windows?
A) UL 639
B) UL 634
C) UL 448
D) UL 365
E) UL 611
Correct Answer: B) 634
Rationale: UL 634 covers Connectors and Switches for use with Burglar-Alarm Systems.
Question 3
When installing a Normally Closed (NC) door contact that opens on alarm, where should the
End-of-Line (EOL) resistor be placed?
A) In series at the control panel
B) In parallel at the control panel
C) In series at the farthest device on the loop
D) In parallel at the device
E) It is not required for NC circuits
Correct Answer: C) In series at device
Rationale: In an NC circuit, the resistor must be in series at the device so that any break in
the wire (tampering or alarm) changes the resistance and is detected by the panel.
Question 4
When installing a Normally Open (NO) door contact that shorts on alarm, where should the EOL
resistor be placed?
A) In series at the device
B) In parallel at the device
C) At the control panel terminals
D) Only in the middle of the run
, 2
E) NO contacts do not use resistors
Correct Answer: B) In parallel at the device
Rationale: For an NO circuit, placing the resistor in parallel at the device allows the panel to
"supervise" the loop; if the wire is cut, the panel loses the resistor reading and triggers a
trouble.
Question 5
A motion detector that operates using a transmit frequency between 20 and 40 KHz is classified
as:
A) A Passive Infrared (PIR) detector
B) A Microwave detector
C) An Ultrasonic detector
D) An Audio Discriminator
E) A Photoelectric Beam
Correct Answer: C) Ultrasonic detector
Rationale: Ultrasonic detectors use sound waves in the 20-40 KHz range to detect movement
via the Doppler effect.
Question 6
A motion detector that operates using a transmit frequency of 10 to 20 GHz is classified as:
A) An Ultrasonic detector
B) A Microwave detector
C) A PIR detector
D) A seismic sensor
E) An Ionization detector
Correct Answer: B) Microwave detector
Rationale: Microwave detectors operate in the high-frequency Gigahertz (GHz) range.
Question 7
What is a common characteristic of Passive Infrared (PIR) detectors?
A) They transmit high-frequency sound waves
B) They are most sensitive to motion moving directly toward the sensor
C) They transmit on a frequency of 100-200 KHz
D) They are most sensitive to motion crossing the fields of detection
E) They can see through solid wood doors
Correct Answer: D) False (Refers to the false statement that they are most sensitive
toward/away).
Rationale: PIRs are most sensitive to motion moving across the detection segments
(tangential motion) rather than motion moving directly toward or away from the lens.
, 3
Question 8
Which of the following sensors is most sensitive to motion moving toward and away from the
detector?
A) PIR
B) Microwave
C) Photoelectric beam
D) Audio glass break
E) Magnetic reed switch
Correct Answer: B) True (Refers to the statement that Microwaves are most sensitive
toward/away).
Rationale: Microwave and Ultrasonic detectors use the Doppler shift principle, which is
highly effective at detecting frequency changes as an object moves toward or away from the
source.
Question 9
What type of magnetic contact is specifically designed for high-security applications to prevent
defeating the sensor with an external magnet?
A) Standard recessed contact
B) Biased magnetic contact
C) Normally Open contact
D) Mechanical plunger switch
E) Shunted contact
Correct Answer: B) High security applications
Rationale: Biased contacts use multiple magnets to create a specific balanced field. If an
intruder attempts to use an outside magnet to keep the switch closed, the balance is upset
and an alarm is triggered.
Question 10
Which of the following can a microwave motion detector typically penetrate?
A) Metal filing cabinets
B) Lead-lined walls
C) Glass, wood paneling, and Sheetrock
D) Thick water-filled containers
E) Solid concrete foundations
Correct Answer: C) True (Refers to the statement that they can penetrate glass/wood/Sheetrock).
Rationale: Unlike PIRs, which are blocked by glass and most solids, microwave energy can
pass through non-metallic walls and windows, potentially causing false alarms from outside
movement.
Question 11
What is the primary purpose of a "Dual Technology" motion detector?
QUESTIONS WITH 100% VERIFIED SOLUTIONS,
Question 1
Which UL Standard specifically provides the safety requirements for intrusion detectors?
A) UL 634
B) UL 681
C) UL 639
D) UL 1076
E) UL 1981
Correct Answer: C) 639
Rationale: UL 639 is the standard for Intrusion-Detection Units, which includes PIR,
microwave, and ultrasonic motion sensors.
Question 2
Which UL Standard covers connectors and switches, such as magnetic contacts used on doors
and windows?
A) UL 639
B) UL 634
C) UL 448
D) UL 365
E) UL 611
Correct Answer: B) 634
Rationale: UL 634 covers Connectors and Switches for use with Burglar-Alarm Systems.
Question 3
When installing a Normally Closed (NC) door contact that opens on alarm, where should the
End-of-Line (EOL) resistor be placed?
A) In series at the control panel
B) In parallel at the control panel
C) In series at the farthest device on the loop
D) In parallel at the device
E) It is not required for NC circuits
Correct Answer: C) In series at device
Rationale: In an NC circuit, the resistor must be in series at the device so that any break in
the wire (tampering or alarm) changes the resistance and is detected by the panel.
Question 4
When installing a Normally Open (NO) door contact that shorts on alarm, where should the EOL
resistor be placed?
A) In series at the device
B) In parallel at the device
C) At the control panel terminals
D) Only in the middle of the run
, 2
E) NO contacts do not use resistors
Correct Answer: B) In parallel at the device
Rationale: For an NO circuit, placing the resistor in parallel at the device allows the panel to
"supervise" the loop; if the wire is cut, the panel loses the resistor reading and triggers a
trouble.
Question 5
A motion detector that operates using a transmit frequency between 20 and 40 KHz is classified
as:
A) A Passive Infrared (PIR) detector
B) A Microwave detector
C) An Ultrasonic detector
D) An Audio Discriminator
E) A Photoelectric Beam
Correct Answer: C) Ultrasonic detector
Rationale: Ultrasonic detectors use sound waves in the 20-40 KHz range to detect movement
via the Doppler effect.
Question 6
A motion detector that operates using a transmit frequency of 10 to 20 GHz is classified as:
A) An Ultrasonic detector
B) A Microwave detector
C) A PIR detector
D) A seismic sensor
E) An Ionization detector
Correct Answer: B) Microwave detector
Rationale: Microwave detectors operate in the high-frequency Gigahertz (GHz) range.
Question 7
What is a common characteristic of Passive Infrared (PIR) detectors?
A) They transmit high-frequency sound waves
B) They are most sensitive to motion moving directly toward the sensor
C) They transmit on a frequency of 100-200 KHz
D) They are most sensitive to motion crossing the fields of detection
E) They can see through solid wood doors
Correct Answer: D) False (Refers to the false statement that they are most sensitive
toward/away).
Rationale: PIRs are most sensitive to motion moving across the detection segments
(tangential motion) rather than motion moving directly toward or away from the lens.
, 3
Question 8
Which of the following sensors is most sensitive to motion moving toward and away from the
detector?
A) PIR
B) Microwave
C) Photoelectric beam
D) Audio glass break
E) Magnetic reed switch
Correct Answer: B) True (Refers to the statement that Microwaves are most sensitive
toward/away).
Rationale: Microwave and Ultrasonic detectors use the Doppler shift principle, which is
highly effective at detecting frequency changes as an object moves toward or away from the
source.
Question 9
What type of magnetic contact is specifically designed for high-security applications to prevent
defeating the sensor with an external magnet?
A) Standard recessed contact
B) Biased magnetic contact
C) Normally Open contact
D) Mechanical plunger switch
E) Shunted contact
Correct Answer: B) High security applications
Rationale: Biased contacts use multiple magnets to create a specific balanced field. If an
intruder attempts to use an outside magnet to keep the switch closed, the balance is upset
and an alarm is triggered.
Question 10
Which of the following can a microwave motion detector typically penetrate?
A) Metal filing cabinets
B) Lead-lined walls
C) Glass, wood paneling, and Sheetrock
D) Thick water-filled containers
E) Solid concrete foundations
Correct Answer: C) True (Refers to the statement that they can penetrate glass/wood/Sheetrock).
Rationale: Unlike PIRs, which are blocked by glass and most solids, microwave energy can
pass through non-metallic walls and windows, potentially causing false alarms from outside
movement.
Question 11
What is the primary purpose of a "Dual Technology" motion detector?
