NICET Inspection and Testing of Fire Alarm Systems Level I Exam ITFAS-Level-1 Exam Dumps: Updated Questions & Answers (September 2025)

Duct detectors are used to shut down air handling systems to prevent smoke from circulating. NFPA 72 requires that these detectors and their shutdown functions be testedannually.

NFPA 72 (2022), Table 14.4.3.2 – Testing Frequencies:

"Duct-type smoke detectors with HVAC shutdown" → Frequency: Annually.

The test must verifydetector functionandHVAC control activation.

Correct answer: D. Annually

Whensite-specific software(such as logic for fire alarm control panels) is changed,100% of the devices affectedby that change must be tested to confirm correct operation. Also,10% of unaffected devicesmust be tested as a safeguard.

NFPA 72 (2022), Section 14.4.2.2.4:

“When system software is modified, 100% of the affected devices or functions and 10% of the nonaffected devices or functions shall be tested.”

This ensures that updates don’t unintentionally compromise unrelated areas of the system.

Correct answer: D. 100% of devices affected

Visible notification appliances used in fire alarm systems (like strobes) must be eitherclear or redto distinguish them from other building systems.

NFPA 72 (2022), Section 18.5.1.4:

“Visible signals used in fire alarm systems shall be clear or nominal red in color.”

This ensuresstandardized visual recognitionduring fire emergencies.

Correct answer: D. Clear or red

===========

Sound level readings for fire alarm audible notification appliances must be taken at a consistent, standardized height to ensure compliance with required dBA levels.

NFPA 72 (2022), Section 18.4.6.1:

“Sound pressure level measurements shall be taken with a sound level meter positioned 5 ft (1.5 m) above the floor in the area required to be served by the system.”

This applies to bothpublic mode(e.g., schools, offices) andprivate mode(e.g., staff-only zones like hospitals).

Correct answer: B. 5.0 feet (1.5 meters)

===========

NFPA 72 defines a time requirement for how quickly a waterflow switch must respond when a sprinkler system activates. The waterflow initiating device (typically a paddle-type switch) must send an alarmwithin 90 seconds, but the system may have aretard delayof up to90 seconds, making the total allowable time120 seconds.

NFPA 72 (2022), Section 17.13.2:

“Waterflow alarm-initiating devices shall be set to operate within 90 seconds after the flow begins. Retard devices shall not delay the signal more than an additional 90 seconds.”

Thus, the maximumtotal activation timeis:

90 seconds operation + 90 seconds retard =120 seconds max

Correct answer: C. 120 seconds

===========

For smoke detectors that allow field sensitivity adjustment, NFPA 72 provides a minimum allowable sensitivity range to ensure the detector still provides proper protection.

NFPA 72 (2022), Section 17.7.3.2.1.1.3:

"If a detector has a field-adjustable sensitivity, the range shall be not less than 0.6 percent/ftobscuration (1.95 percent/m)."

This means theminimum range must include 0.6%/ft— detectors can be more sensitive, but not less.

Correct answer: A. No less than 0.6% per foot (1.95% per meter)

NFPA 72 requires thattrouble signalsbe inspectedweeklyon monitored fire alarm systems toensure the system can detect and report problems in a timely manner.

NFPA 72 (2022), Table 14.3.1 — Inspection Frequencies:

"Supervising station systems — Trouble signals"→Weekly

This ensures any open circuits, ground faults, or system issues are discovered promptly.

Correct answer: A. Weekly

===========

This question is referring tosupervisory signaling for control valvesin sprinkler systems. When a valve begins to move from its normal (open) position, the fire alarm system must detect and signal thisbefore it reaches too far out of position.

NFPA 72 (2022), Section 17.16.1.3:

"Off-normal signal shall be initiated during the first one-quarter (1/4) of the valve travel distance from its normal position."

This ensures timely detection if someone begins to close a sprinkler valve, which could disable the fire suppression system.

Correct answer: B. 1/4

===========

When aDACTis the only method of off-premises signal transmission, itmustbe connected totwo separate telephone linesto ensure redundancy in case one line fails.

NFPA 72 (2022), Section 26.6.4.4.4.1:

“DACTs shall be connected to two separate phone lines (one primary, one secondary). Loss of the primary line shall result in a supervisory signal.”

This redundancy ensures system reliability when using traditional telephone-based communication.

Correct answer: D. Two separate phone lines are required

===========

NFPA 72 places amaximum allowable sound pressure levelto prevent hearing damage or discomfort in occupied areas.

NFPA 72 (2022), Section 18.4.1.5:

“The total sound pressure level produced by the fire alarm system, including ambient noise, shall not exceed 105 dBA at the minimum hearing distance from the audible appliance.”

This ensures alarm audibilitywithout causing harm.

Correct answer: B. 105 dBA

===========