Engine-driven generators used for emergency power arenot governed directly by NFPA 72. Instead, their installation and testing requirements are found in:
NFPA 110 - Standard for Emergency and Standby Power Systems
NFPA 110 (2022), Chapter 8details howengine-driven generatorsmust be tested, including runtime, load testing, and maintenance intervals.
NFPA 72 references NFPA 110whenever standby/emergency power is used for fire alarm systems.
Correct answer: D. NFPA 110

This question focuses on estimatingsystem impairment time, which is a key planning function when coordinating fire alarm inspections.
Step-by-step breakdown:
* 45 devices × 2 minutes =90 minutes
* FACU testing and restoration =20 minutes
* Total = 90 + 20 =110 minutes
* 110 minutes =1 hour and 50 minutes
While NFPA 72 doesn't specify how to calculate impairment time, NICET expects Level I technicians toplan and communicate system impairmentsaccurately - part of their responsibilities under:
NICET Level I Content Outline - Domain: Plan and Coordinate Work
"Estimate and communicate the time required to perform inspection and testing tasks while minimizing system impairments." Therefore, the correct choice is:
D: 1 hour, 50 minutes

Manual fire alarm boxes (pull stations) must bevisually inspected monthlyto ensure accessibility, visibility, and no physical damage.
NFPA 72 (2022), Table 14.3.1 - Inspection Frequencies:
"Manual fire alarm boxes"#Monthly
The inspection verifies the handle is not blocked and the device is clearly labeled.
Correct answer: A. Monthly

NFPA 72 requires smoke alarms in residential settings to be replaced every10 years, even if they have not shown any signs of failure.
NFPA 72 (2022), Section 29.8.1.4:
"Unless otherwise recommended by the manufacturer, smoke alarms shall be replaced when they fail to respond to operability tests or have been in service for 10 years." Correct answer: C. 10

Transmitters connected tosupervising stations(such as DACTs or IP communicators) must be inspected quarterlyto ensure signal integrity and physical condition.
NFPA 72 (2022), Table 14.3.1 - Inspection Frequencies:
"Supervising station transmitting equipment"#Quarterly
This includes checking for damage, loose connections, or communication issues.
Correct answer: B. Quarterly