FDNY S95 Supervision of Fire Alarm Systems Exam – 150
Questions, Answers & Rationales (2025 Edition)
1. Under FDNY S95 rules, what is the daily responsibility of the Certificate of Fitness holder?
a. Inspect the fire alarm panel for normal operation
b. Replace all smoke detectors
c. Modify the alarm system when needed
d. Reset the main power supply
Correct Answer: A (correct answer)
Daily inspection ensures the panel is functional and free of trouble conditions.
2. Which of the following is considered a “trouble” condition on a fire alarm panel?
a. System in normal mode
b. Ground fault detected
c. All zones clear
d. Power light steady
Correct Answer: B (correct answer)
Ground faults indicate an electrical integrity failure and must be addressed immediately.
3. How often must fire alarm logs be updated under FDNY rules?
a. Weekly
b. Monthly
c. Every time an event or inspection occurs
d. Only after fire department visits
Correct Answer: C (correct answer)
Fire alarm logs must reflect every event, inspection, signal, and test.
,4. Which type of signal indicates an immediate fire emergency requiring evacuation?
a. Supervisory
b. Trouble
c. Alarm
d. Reset
Correct Answer: C (correct answer)
Alarm signals reflect activation of detection devices and require emergency action.
5. Who is legally allowed to silence a fire alarm panel in NYC?
a. Any employee
b. Only NYPD
c. FDNY or a Certificate of Fitness S95 holder
d. Building owner only
Correct Answer: C (correct answer)
Only FDNY or authorized S95 personnel can silence panels to prevent improper shutdown.
6. When a fire alarm is activated, what is the FIRST action the S95 holder must take?
a. Silence the alarm
b. Evacuate immediately
c. Investigate the source of the alarm
d. Reset the panel
Correct Answer: C (correct answer)
Investigation confirms if there's a real fire before taking further action.
7. What does a yellow light typically indicate on a fire alarm control panel?
a. Alarm
b. Power loss
c. Trouble condition
d. Supervisory signal
,Correct Answer: C (correct answer)
Yellow indicates a trouble condition requiring immediate attention.
8. A supervisory signal indicates:
a. A real fire
b. A compromised fire protection system
c. A ground fault
d. A smoke detector failure
Correct Answer: B (correct answer)
Supervisory signals show impairment or status change in sprinkler/standpipe systems.
9. When must the fire alarm panel be reset?
a. After the cause of activation has been corrected
b. Immediately after the alarm
c. Before FDNY arrives
d. Once a week
Correct Answer: A (correct answer)
Resetting without correcting the cause may hide active hazards.
10. Which part of the fire alarm system detects products of combustion?
a. Pull station
b. Heat sensor
c. Smoke detector
d. Tamper switch
Correct Answer: C (correct answer)
Smoke detectors respond to airborne particulates from fire. [/RED]
11. What is the purpose of the smoke detector’s LED indicator?
, a. To show carbon monoxide levels
b. To show operational or alarm status
c. To display battery life
d. To indicate system tampering
Correct Answer: B (correct answer)
Rationale: The LED shows whether the detector is normal, in alarm, or in trouble mode.
12. A manual pull station is typically located:
a. Only inside mechanical rooms
b. Along the path of egress
c. Inside elevator shafts
d. On the roof only
Correct Answer: B (correct answer)
Rationale: Pull stations must be readily accessible along evacuation routes.
13. What color is typically used to indicate alarm condition on a fire panel?
a. Green
b. Blue
c. Red
d. Yellow
Correct Answer: C (correct answer)
Rationale: Red lights indicate an active fire alarm condition.
14. A fire alarm system’s main power supply is usually:
a. Solar energy
b. Building electrical service
c. Fire pump line
d. Emergency generator only
Correct Answer: B (correct answer)
Rationale: Fire alarm systems are normally powered by the building’s primary electrical feed.
Questions, Answers & Rationales (2025 Edition)
1. Under FDNY S95 rules, what is the daily responsibility of the Certificate of Fitness holder?
a. Inspect the fire alarm panel for normal operation
b. Replace all smoke detectors
c. Modify the alarm system when needed
d. Reset the main power supply
Correct Answer: A (correct answer)
Daily inspection ensures the panel is functional and free of trouble conditions.
2. Which of the following is considered a “trouble” condition on a fire alarm panel?
a. System in normal mode
b. Ground fault detected
c. All zones clear
d. Power light steady
Correct Answer: B (correct answer)
Ground faults indicate an electrical integrity failure and must be addressed immediately.
3. How often must fire alarm logs be updated under FDNY rules?
a. Weekly
b. Monthly
c. Every time an event or inspection occurs
d. Only after fire department visits
Correct Answer: C (correct answer)
Fire alarm logs must reflect every event, inspection, signal, and test.
,4. Which type of signal indicates an immediate fire emergency requiring evacuation?
a. Supervisory
b. Trouble
c. Alarm
d. Reset
Correct Answer: C (correct answer)
Alarm signals reflect activation of detection devices and require emergency action.
5. Who is legally allowed to silence a fire alarm panel in NYC?
a. Any employee
b. Only NYPD
c. FDNY or a Certificate of Fitness S95 holder
d. Building owner only
Correct Answer: C (correct answer)
Only FDNY or authorized S95 personnel can silence panels to prevent improper shutdown.
6. When a fire alarm is activated, what is the FIRST action the S95 holder must take?
a. Silence the alarm
b. Evacuate immediately
c. Investigate the source of the alarm
d. Reset the panel
Correct Answer: C (correct answer)
Investigation confirms if there's a real fire before taking further action.
7. What does a yellow light typically indicate on a fire alarm control panel?
a. Alarm
b. Power loss
c. Trouble condition
d. Supervisory signal
,Correct Answer: C (correct answer)
Yellow indicates a trouble condition requiring immediate attention.
8. A supervisory signal indicates:
a. A real fire
b. A compromised fire protection system
c. A ground fault
d. A smoke detector failure
Correct Answer: B (correct answer)
Supervisory signals show impairment or status change in sprinkler/standpipe systems.
9. When must the fire alarm panel be reset?
a. After the cause of activation has been corrected
b. Immediately after the alarm
c. Before FDNY arrives
d. Once a week
Correct Answer: A (correct answer)
Resetting without correcting the cause may hide active hazards.
10. Which part of the fire alarm system detects products of combustion?
a. Pull station
b. Heat sensor
c. Smoke detector
d. Tamper switch
Correct Answer: C (correct answer)
Smoke detectors respond to airborne particulates from fire. [/RED]
11. What is the purpose of the smoke detector’s LED indicator?
, a. To show carbon monoxide levels
b. To show operational or alarm status
c. To display battery life
d. To indicate system tampering
Correct Answer: B (correct answer)
Rationale: The LED shows whether the detector is normal, in alarm, or in trouble mode.
12. A manual pull station is typically located:
a. Only inside mechanical rooms
b. Along the path of egress
c. Inside elevator shafts
d. On the roof only
Correct Answer: B (correct answer)
Rationale: Pull stations must be readily accessible along evacuation routes.
13. What color is typically used to indicate alarm condition on a fire panel?
a. Green
b. Blue
c. Red
d. Yellow
Correct Answer: C (correct answer)
Rationale: Red lights indicate an active fire alarm condition.
14. A fire alarm system’s main power supply is usually:
a. Solar energy
b. Building electrical service
c. Fire pump line
d. Emergency generator only
Correct Answer: B (correct answer)
Rationale: Fire alarm systems are normally powered by the building’s primary electrical feed.
