Alarm Systems Contractor Examination
Practice Exam 2026 Edition Complete
Licensing Exam Study Guide 100
Practice Questions Verified Answers &
Detailed Rationales Professional
Certification Test Prep Instant PDF
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1. Which NFPA standard primarily governs the installation of fire alarm
systems?
A. NFPA 13
B. NFPA 72
C. NFPA 101
D. NFPA 70E
Answer: NFPA 72
Rationale: NFPA 72, National Fire Alarm and Signaling Code, establishes
requirements for the installation, testing, inspection, and maintenance of fire
alarm systems.
, 2. The primary purpose of a burglar alarm system is to:
A. Detect smoke
B. Detect water leaks
C. Detect unauthorized entry
D. Detect gas leaks
Answer: Detect unauthorized entry
Rationale: Burglar alarm systems are designed to detect intrusion or
unauthorized access to protected premises.
3. Which electrical code governs wiring methods used for alarm systems?
A. NFPA 90A
B. OSHA Standards
C. National Electrical Code (NFPA 70)
D. International Plumbing Code
Answer: National Electrical Code (NFPA 70)
Rationale: The NEC establishes requirements for safe electrical installations,
including alarm system wiring.
4. Normally Closed (NC) door contacts are designed so that:
A. The circuit is open when secured.
B. The circuit remains complete while the door is closed.
C. Voltage is removed during normal operation.
D. The contact is wireless.
Answer: The circuit remains complete while the door is closed.
Rationale: NC contacts create a complete circuit while secured and open when
the protected opening is breached.
, 5. End-of-Line (EOL) resistors are primarily used to:
A. Increase battery life.
B. Reduce signal voltage.
C. Supervise field wiring for faults or tampering.
D. Improve wireless transmission.
Answer: Supervise field wiring for faults or tampering.
Rationale: EOL resistors allow the control panel to distinguish between normal,
alarm, open, and short circuit conditions.
6. Which battery type is most commonly used for alarm control panel backup
power?
A. Nickel-Cadmium
B. Lithium-Ion
C. Alkaline
D. Sealed Lead-Acid
Answer: Sealed Lead-Acid
Rationale: Sealed lead-acid batteries are reliable, rechargeable, and widely
required for standby power in alarm systems.
7. Passive Infrared (PIR) detectors respond primarily to:
A. Sound waves
B. Microwave reflections
C. Changes in infrared energy
D. Magnetic fields
Answer: Changes in infrared energy
, Rationale: PIR sensors detect movement by sensing changes in infrared
radiation emitted by warm objects.
8. Which detector technology is least affected by temperature changes?
A. PIR
B. Heat detector
C. Microwave motion detector
D. Fixed-temperature detector
Answer: Microwave motion detector
Rationale: Microwave sensors detect movement using Doppler frequency shifts
rather than heat changes.
9. Cross zoning is primarily intended to:
A. Reduce installation cost.
B. Increase battery life.
C. Reduce false alarms before activation.
D. Improve wireless range.
Answer: Reduce false alarms before activation.
Rationale: Cross zoning requires two independent detectors to activate before
an alarm output occurs.
10.Class A initiating device circuits differ from Class B because they:
A. Require wireless devices.
B. Use fibre optics.
C. Continue operating after one wiring break.
D. Operate only on AC power.
Practice Exam 2026 Edition Complete
Licensing Exam Study Guide 100
Practice Questions Verified Answers &
Detailed Rationales Professional
Certification Test Prep Instant PDF
Download
1. Which NFPA standard primarily governs the installation of fire alarm
systems?
A. NFPA 13
B. NFPA 72
C. NFPA 101
D. NFPA 70E
Answer: NFPA 72
Rationale: NFPA 72, National Fire Alarm and Signaling Code, establishes
requirements for the installation, testing, inspection, and maintenance of fire
alarm systems.
, 2. The primary purpose of a burglar alarm system is to:
A. Detect smoke
B. Detect water leaks
C. Detect unauthorized entry
D. Detect gas leaks
Answer: Detect unauthorized entry
Rationale: Burglar alarm systems are designed to detect intrusion or
unauthorized access to protected premises.
3. Which electrical code governs wiring methods used for alarm systems?
A. NFPA 90A
B. OSHA Standards
C. National Electrical Code (NFPA 70)
D. International Plumbing Code
Answer: National Electrical Code (NFPA 70)
Rationale: The NEC establishes requirements for safe electrical installations,
including alarm system wiring.
4. Normally Closed (NC) door contacts are designed so that:
A. The circuit is open when secured.
B. The circuit remains complete while the door is closed.
C. Voltage is removed during normal operation.
D. The contact is wireless.
Answer: The circuit remains complete while the door is closed.
Rationale: NC contacts create a complete circuit while secured and open when
the protected opening is breached.
, 5. End-of-Line (EOL) resistors are primarily used to:
A. Increase battery life.
B. Reduce signal voltage.
C. Supervise field wiring for faults or tampering.
D. Improve wireless transmission.
Answer: Supervise field wiring for faults or tampering.
Rationale: EOL resistors allow the control panel to distinguish between normal,
alarm, open, and short circuit conditions.
6. Which battery type is most commonly used for alarm control panel backup
power?
A. Nickel-Cadmium
B. Lithium-Ion
C. Alkaline
D. Sealed Lead-Acid
Answer: Sealed Lead-Acid
Rationale: Sealed lead-acid batteries are reliable, rechargeable, and widely
required for standby power in alarm systems.
7. Passive Infrared (PIR) detectors respond primarily to:
A. Sound waves
B. Microwave reflections
C. Changes in infrared energy
D. Magnetic fields
Answer: Changes in infrared energy
, Rationale: PIR sensors detect movement by sensing changes in infrared
radiation emitted by warm objects.
8. Which detector technology is least affected by temperature changes?
A. PIR
B. Heat detector
C. Microwave motion detector
D. Fixed-temperature detector
Answer: Microwave motion detector
Rationale: Microwave sensors detect movement using Doppler frequency shifts
rather than heat changes.
9. Cross zoning is primarily intended to:
A. Reduce installation cost.
B. Increase battery life.
C. Reduce false alarms before activation.
D. Improve wireless range.
Answer: Reduce false alarms before activation.
Rationale: Cross zoning requires two independent detectors to activate before
an alarm output occurs.
10.Class A initiating device circuits differ from Class B because they:
A. Require wireless devices.
B. Use fibre optics.
C. Continue operating after one wiring break.
D. Operate only on AC power.
