CFAA Fire Alarm Technician · Question
Which network wiring configuration does NOT allow communication to continue past a single open-circuit fault?
DCLB (Style 4) is a 'daisy-chain' or 'T-tapped' configuration where a single break results in loss of communication to all devices beyond the break.
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Question: Which network wiring configuration does NOT allow communication to continue past a single open-circuit fault?
Answer options:
- DCLA (Class A) circuit ✅ DCLB (Class B) circuit
- DCLC (Class X) circuit
- Style 7 Fiber Ring
Correct answer: DCLB (Class B) circuit
Explanation: DCLB (Style 4) is a 'daisy-chain' or 'T-tapped' configuration where a single break results in loss of communication to all devices beyond the break.
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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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