Question

A telegram is transmitted on a line. Which devices execute the command it carries?

KNX BasicLearnKNX TopologyMedium
Answer

D — Only the devices whose parameters contain the matching group address.

Correct: All devices listen in, but only those with the same group address as the telegram execute the command.

Source

KNX Basic Course Documentation — 3.11 — p. 75

All proposed choices (exam context)
  1. A.Every device on the line, because all of them receive the telegram.
  2. B.Only the line coupler of that line.
  3. C.Only the device that sent the telegram.
  4. D.Only the devices whose parameters contain the matching group address.
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Last updated: 19 May 2026

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