F89 F89 Communication Systems and Emergency Notifications Questions and Answers 4

Question 1

Under NFPA 72, how frequently must voice intelligibility testing be conducted on a mass notification system in a high-rise building?

Accepted Answer

Annually

Answer

NFPA 72 requires annual testing of voice intelligibility for mass notification and emergency communication systems.

Question 2

A Fire and Life Safety Director discovers that the building's two-way fire department communication (firefighter phone) jacks on floors 12 through 18 are inoperative. What is the FIRST action to take?

Accepted Answer

Notify the fire department and post a fire watch on those floors

Answer

Inoperative firefighter phone jacks constitute an impairment requiring immediate notification to the fire department and implementation of a fire watch.

Question 3

Which condition would cause a Class A notification appliance circuit to continue operating even after a single open-circuit fault?

Accepted Answer

The circuit is wired in a loop returning to the panel

Answer

Class A wiring uses a loop configuration so that an open fault isolates only one segment while the remainder of the circuit continues to operate.

Question 4

During an emergency, the fire command station microphone is used but occupants report they cannot hear announcements on the 30th floor. What component is MOST likely at fault?

Accepted Answer

A tripped amplifier or speaker circuit serving that zone

Answer

An amplifier or speaker circuit failure serving a specific zone would prevent announcements from reaching that floor while leaving other zones unaffected.

Question 5

What is the purpose of the 'alert tone' that precedes a pre-recorded or live voice emergency message?

Accepted Answer

To attract attention and signal that an important announcement will follow

Answer

The alert tone (typically a three-pulse temporal pattern or attention signal) draws occupants' attention before a spoken message begins.

F89 - Fire and Life Safety Director Practice Test

F89 - Fire and Life Safety Director Practice Test

F89 F89 Communication Systems and Emergency Notifications Questions and Answers 4