Question
Why does each KNX RF line or segment receive its own unique domain address?
Answer
C — To avoid logical interference between adjacent KNX RF lines.
Correct: the domain address gives each RF line a unique identity to prevent logical interference.
Source
KNX Basic Course Documentation — 5.3 — p. 155
All proposed choices (exam context)
- A.To increase the physical radio range of the line.
- B.To set the 868 MHz carrier frequency for that line.
- C.To avoid logical interference between adjacent KNX RF lines.✓
- D.To supply bus power to the RF devices.
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