Question

Which statement about filtering between the segments of a line is correct?

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Answer

D — Segment couplers introduce filtering between different segments of a line, which does not exist with TP line repeaters.

Correct: providing inter-segment filtering - absent in TP repeaters - was one reason for segment couplers.

Source

KNX Basic Course Documentation — 21.1 — p. 87

All proposed choices (exam context)
  1. A.TP line repeaters filter between segments, so segment couplers were unnecessary.
  2. B.Neither repeaters nor segment couplers can filter within a line.
  3. C.Filtering between segments only works over an IP backbone.
  4. D.Segment couplers introduce filtering between different segments of a line, which does not exist with TP line repeaters.
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Last updated: 19 May 2026

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