FDNY F78 Cleaning And Testing Of Smoke
Detectors Exam Questions And Verified
Answers With Rationales
1. The main purpose of the FDNY F-78 Certificate of Fitness is to ensure
that individuals are qualified to:
A) Install new fire alarm systems
B) Clean and test smoke detectors properly and safely
C) Design building evacuation plans
D) Inspect sprinkler systems
Rationale: The F-78 certificate specifically authorizes workers to
clean and test smoke detectors to maintain fire safety compliance.
2. Smoke detectors must be cleaned and tested at least:
A) Every 3 months
B) Annually
C) Every 2 years
, D) Every 5 years
Rationale: NFPA 72 and FDNY codes require annual inspection,
testing, and maintenance of smoke detectors.
3. Before testing a smoke detector, the technician must first:
A) Remove all detectors
B) Turn off the fire alarm system permanently
C) Notify the Fire Alarm Monitoring Company and building occupants
D) Disconnect power to the entire building
Rationale: Notification prevents false alarms and unnecessary FDNY
response.
4. Which document outlines the national standards for fire alarm system
testing?
A) OSHA 1910
B) NFPA 25
C) NFPA 72
D) NYC Fire Code Chapter 3
Rationale: NFPA 72 provides national standards for fire alarm
inspection, testing, and maintenance.
5. What is the primary function of a smoke detector?
A) Detect carbon monoxide
B) Suppress fire
C) Detect smoke particles and trigger alarm signals
D) Record video of fire conditions
, Rationale: Smoke detectors identify smoke presence to initiate early
warning.
6. Ionization smoke detectors are most effective in detecting:
A) Flaming fires
B) Smoldering fires
C) Heat buildup
D) Gas leaks
Rationale: Ionization detectors respond quickly to small combustion
particles typical of flaming fires.
7. Photoelectric smoke detectors are best for detecting:
A) Open flame fires
B) Smoldering fires
C) Explosions
D) Steam emissions
Rationale: Photoelectric detectors sense larger particles typical of
smoldering fires.
8. The main tool used to clean smoke detectors is:
A) Wet sponge
B) Air compressor
C) Vacuum cleaner with soft brush
D) Cleaning solvent
Rationale: A vacuum with soft brush removes dust without damaging
sensors.
, 9. Which of the following must be logged after testing detectors?
A) Technician’s lunch break
B) Building lease information
C) Date, time, and results of testing
D) Alarm tone type
Rationale: Maintenance logs must record details of inspection,
cleaning, and testing.
10. When cleaning smoke detectors, the power to the fire alarm
system should be:
A) Left on
B) Disabled or placed in test mode
C) Disconnected from the power supply permanently
D) Increased for faster cleaning
Rationale: Test mode prevents unwanted alarms while allowing safe
cleaning.
11. The F-78 Certificate of Fitness is issued by:
A) Department of Buildings
B) New York City Fire Department (FDNY)
C) Department of Environmental Protection
D) OSHA
Rationale: FDNY administers and issues Certificates of Fitness.
12. Which of the following is NOT permitted when cleaning a smoke
detector?
Detectors Exam Questions And Verified
Answers With Rationales
1. The main purpose of the FDNY F-78 Certificate of Fitness is to ensure
that individuals are qualified to:
A) Install new fire alarm systems
B) Clean and test smoke detectors properly and safely
C) Design building evacuation plans
D) Inspect sprinkler systems
Rationale: The F-78 certificate specifically authorizes workers to
clean and test smoke detectors to maintain fire safety compliance.
2. Smoke detectors must be cleaned and tested at least:
A) Every 3 months
B) Annually
C) Every 2 years
, D) Every 5 years
Rationale: NFPA 72 and FDNY codes require annual inspection,
testing, and maintenance of smoke detectors.
3. Before testing a smoke detector, the technician must first:
A) Remove all detectors
B) Turn off the fire alarm system permanently
C) Notify the Fire Alarm Monitoring Company and building occupants
D) Disconnect power to the entire building
Rationale: Notification prevents false alarms and unnecessary FDNY
response.
4. Which document outlines the national standards for fire alarm system
testing?
A) OSHA 1910
B) NFPA 25
C) NFPA 72
D) NYC Fire Code Chapter 3
Rationale: NFPA 72 provides national standards for fire alarm
inspection, testing, and maintenance.
5. What is the primary function of a smoke detector?
A) Detect carbon monoxide
B) Suppress fire
C) Detect smoke particles and trigger alarm signals
D) Record video of fire conditions
, Rationale: Smoke detectors identify smoke presence to initiate early
warning.
6. Ionization smoke detectors are most effective in detecting:
A) Flaming fires
B) Smoldering fires
C) Heat buildup
D) Gas leaks
Rationale: Ionization detectors respond quickly to small combustion
particles typical of flaming fires.
7. Photoelectric smoke detectors are best for detecting:
A) Open flame fires
B) Smoldering fires
C) Explosions
D) Steam emissions
Rationale: Photoelectric detectors sense larger particles typical of
smoldering fires.
8. The main tool used to clean smoke detectors is:
A) Wet sponge
B) Air compressor
C) Vacuum cleaner with soft brush
D) Cleaning solvent
Rationale: A vacuum with soft brush removes dust without damaging
sensors.
, 9. Which of the following must be logged after testing detectors?
A) Technician’s lunch break
B) Building lease information
C) Date, time, and results of testing
D) Alarm tone type
Rationale: Maintenance logs must record details of inspection,
cleaning, and testing.
10. When cleaning smoke detectors, the power to the fire alarm
system should be:
A) Left on
B) Disabled or placed in test mode
C) Disconnected from the power supply permanently
D) Increased for faster cleaning
Rationale: Test mode prevents unwanted alarms while allowing safe
cleaning.
11. The F-78 Certificate of Fitness is issued by:
A) Department of Buildings
B) New York City Fire Department (FDNY)
C) Department of Environmental Protection
D) OSHA
Rationale: FDNY administers and issues Certificates of Fitness.
12. Which of the following is NOT permitted when cleaning a smoke
detector?
