CFAA Fire Alarm Technician · Question
Which wiring classification allows for communication to continue during a single 'open' fault on a network loop?
S524 defines DCLB as a loop that allows communication to continue if there is a single break (Open). A 'star' configuration (DCLA) would lose nodes.
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Question: Which wiring classification allows for communication to continue during a single 'open' fault on a network loop?
Answer options:
- Data Center Link Class A ✅ Data Communication Link Class B (DCLB)
- Direct Connection Loop Class C
- Designated Circuit Line Alpha
Correct answer: Data Communication Link Class B (DCLB)
Explanation: S524 defines DCLB as a loop that allows communication to continue if there is a single break (Open). A 'star' configuration (DCLA) would lose nodes.
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Question explanations
- The primary power for a fire alarm system must be:
- If a 120VAC primary power circuit for a fire alarm control unit is consuming 60 Watts of power, what is the cu
- In a steady-state DC circuit, if the conductor length is doubled while maintaining voltage and wire gauge, wha
- A resistor is rated at 10 Watts at 24VDC. If the voltage drops to 20VDC, what is the new power dissipation?
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