Week 33 Chapter 17 Part 2 - Pages 17-31 to 17-61 Flashcards
At a minimum, both transmission channels for a digital alarm communicator transmitter (DACT) must be tested at regular intervals not exceeding one week.
a. True
b. False
b. False
p 17-50
Both transmission channels are tested at regular intervals not exceeding 24 hours. If two telephone lines are used, it is permitted to test each telephone line at alternating 24-hour intervals.
For public cellular telephone service, transmit a test signal at least monthly.
The number of incoming telephone lines to a digital alarm communicator receiver (DACR) is limited to ___ lines.
a. 20
b. 12
c. 8
d. 5
c. 8
p 17-52
The number of incoming telephone lines to a DACR is limited to eight lines.
If any digital alarm communicator transmitter (DACT) signal transmission is unsuccessful, the information is transmitted by used of the digital alarm radio transmitter (DART). The DART must be capable of demonstrating a minimum _____ percent probability of successfully completing each transmission sequence.
a. 90
b. 85
c. 95
d. 99
a. 90
p 17-51
The DART is capable of demonstrating a minimum 90-percent probability of successfully completing each transmission sequence. Transmission sequences are repeated a minimum of five times.
___ detectors sense visible or invisible particles of combustion generated by burning, smoldering, or the incipient stage of combustion. These devices fall into two categories—photoelectric and ionization.
a. Smoke
b. Flame
c. Heat
a. Smoke
p 17-33
___ detectors sense the radiation produced by fire (e.g., visible light or invisible radiation, IR, ultraviolet radiation).
a. Smoke
b. Flame
c. Heat
b. Flame
p 17-33
AHJs typically will require pull stations that are located within ___ ft of each door that is a point of egress.
a. 2
b. 3
c. 4
d. 5
d. 5
p 17-34
AHJs typically will require pull stations that are located within ≈1.5 m (5 ft) of each door that is a point of egress and are strategically placed so that the linear travel distance between pull stations does not exceed ≈61 m (200 ft).
Pull stations typical mounting heights of pull stations should be ___ in to ___ in above the floor.
a. 36, 42
b. 40, 50
c. 42, 52
d. 48, 54
d. 48, 54
p 17-34
Notification appliances used for FA signaling are almost exclusively designed to operate on ___ V dc power.
a. 12
b. 24
c. 48
b. 24
p 17-36
Notification appliances used for FA signaling are almost exclusively designed to operate on 24 V dc power so that they will continue to function normally on battery backup power in the event of a loss of primary power from the FA system.
To ensure general audibility, in the United States, NFPA 72 require that public mode fire alarm signaling achieves levels 5 dB over the maximum dBA level having a duration of at least ___ seconds in all areas of protected premises.
a. 15
b. 30
c. 60
d. 90
c. 60
p 17-37
ensure general audibility in the United States, NFPA 72® requires that public mode signaling achieves output levels of 15 dB over average ambient sound (dBA) levels, or 5 dB over the maximum dBA level having duration of at least 60 seconds in all areas of protected premises.
According to the FA intelligibility standard, effective systems should exceed the equivalent of a CIS score of ___.
a. 0.50
b. 0.60
c. 0.70
d. 0.80
e. 0.90
c. 0.70
p 17-38
According to the standard, effective systems should exceed the equivalent of a CIS score of 0.70. As the popularity of voice evacuation systems increases, the standard for intelligibility will become more widely understood and tested.
Depending on the required functions and considerations, the control units are usually ___-based and require software to process data and make decisions.
a. Field level
b. System level
c. Headend
d. Microprocessor
d. Microprocessor
p 17-39
Depending on the required functions and considerations, the control units are usually microprocessor-based and require software to process data and make decisions.
Control units are capable of two-way communications. The units receive, process, and make detection decisions based on processed data to transmit commands to alarm and control devices.
For circuit and pathway designations, Class ___ circuits have fail-safe operation, where no fault is annunciated, but the intended operation is performed in the event of a circuit failure.
a. A
b. B
c. C
d. D
e. E
f. X
g. N
d. D
p 17-41
These circuits typically include the wiring that provides power to magnetic door holders (e.g., interruption of the power results in the door closing).
For circuit and pathway designations, Class ___ does not include a redundant signal pathway and operational capability stops at a single open in the circuit.
a. A
b. B
c. C
d. D
e. E
f. X
g. N
b. B
p 17-41
Conditions that affect the intended operation shall result in an annunciation of a trouble signal. A single ground fault does not affect operational capability but shall also be annunciated as a trouble signal.
For circuit and pathway designations, Class ___ pathway designation is used for Ethernet and other network protocols. The other class designations as originally defined are intended for a two-wire circuit.
a. A
b. B
c. C
d. D
e. E
f. X
g. N
g. N
p 17-41
For circuit and pathway designations, Class ___ includes one or more circuits and operational capability is verified via end-to-end communication (e.g., polling or continuous communication), but the integrity of individual circuits is not monitored.
a. A
b. B
c. C
d. D
e. E
f. X
g. N
c. C
p 17-41
loss of end-to-end communication shall be annunciated as a trouble signal. These pathways are typically used with addressable devices and appliances.
For circuit and pathway designations, Class ___ pathways are not monitored for integrity. These pathways are normally used for supplemental equipment only.
a. A
b. B
c. C
d. D
e. E
f. X
g. N
e. E
p 17-41
For circuit and pathway designations, Class ___ includes a redundant signal pathway and operational capability shall continue past a single open in the circuit.
a. A
b. B
c. C
d. D
e. E
f. X
g. N
a. A
p 17-41
A single open fault and any other conditions that affect the intended circuit operation shall result in annunciation of a trouble signal. A single ground fault does not affect operational capability but shall also be annunciated as a trouble signal.
For circuit and pathway designations, Class ___ pathways include a redundant pathway and operational capability continues past a single open, a single short circuit, a ground fault, and a combination open fault and ground fault
a. A
b. B
c. C
d. D
e. E
f. X
g. N
f. X
p 17-41
All these faults result in the annunciation of a trouble signal. Any other condition that affects the intended operation of the path are also annunciated as a trouble signal. These pathways are typically used for signaling line circuits.
Based on NFPA 72 requirements, a redundant cable to a single endpoint device is required to be supervised for Class N pathways.
a. True
b. False
b. False
p 17-43
A redundant cable to a single endpoint device is not required and does not require separate supervision for Class N pathways.
Redundant pathways are required between Switch 1 and Switch 2 and no redundant pathways are required between the switch and the endpoint devices.
Class N supervision of control equipment should be within ___ ft from inside a protected enclosure or raceway.
a. 10
b. 15
c. 20
d. 30
c. 20
p 17-43
In Figure 17.12, there is a note which references an allowance in the code for the ≈6.1 m (20 ft) maximum inside a protected enclosure or raceway.
Note, Figure 17.12 illustrates that if the control unit is in the same room or enclosure as the network switch, it does NOT require a redundant network pathway.
Network infrastructure equipment used in a Class N are considered ___ equipment and do not require the specific supervision required for Class N devices.
a. Transport
b. Field
c. Unsupervised
d. System
a. Transport
p 17-43
They are considered transport equipment (e.g., switches, routers, hubs) and do not require the specific supervision required for Class N devices.
General supervision is required as they are part of the supervised pathways that service the Class N devices themselves. Power backup requirements for Class N applies to all network transport equipment used for life safety and Class N devices.
Level ___ is where life safety data is segregated from all non-life safety data.
a. 0
b. 1
c. 2
d. 3
e. 4
c. 2
p 17-45
Life safety data can be segregated on a VLAN or other means to meet Level 2 shared pathway.
Level ___ is where shared pathways do not segregate or prioritize life safety data from non-life safety data.
a. 0
b. 1
c. 2
d. 3
e. 4
a. 0
p 17-45
An example of a Level 0 shared pathway is an unmanaged network.
Using QoS or other means, life safety data can be prioritized to meet Level 1 shared pathway.
Life safety data can be segregated on a VLAN or other means to meet Level 2 shared pathway.
By using dedicated equipment for the life safety system, Level 3 shared pathway is achieved.
When remote control panels are used solely as power supplies for alarm-indicating devices, they are referred to as ___ panels.
a. Remote annunciators
b. Slave
c. NAC
d. Dedicated
c. NAC (notification appliance circuit)
p 17-48
When used solely as power supplies for alarm-indicating devices, remote panels are referred to as NAC panels.
Note, remote panels containing alarm, supervisory, and trouble indications at locations within the facility to alert personnel responsible for the system operation are often referred to as remote annunciators
