Question

Between which two lines does a backbone coupler (BC) provide the connection?

KNX BasicLearnKNX TopologyMedium
Answer

A — Between the backbone line and a main line.

Correct: page 71 - the backbone coupler BC provides the connection between the backbone line and the main line.

Source

KNX Basic Course Documentation — 3.8 — p. 71

All proposed choices (exam context)
  1. A.Between the backbone line and a main line.
  2. B.Between two secondary lines.
  3. C.Between a main line and a secondary line.
  4. D.Between a line segment and the next line segment.
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Last updated: 19 May 2026

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