Question
What does a line coupler do with the data communication between the main line and its secondary line?
Answer
B — It monitors the communication both ways and routes only telegrams whose group addresses are in its filter table.
Correct: page 72 - the line coupler monitors data communication between the main line and the secondary line and vice versa, routing only telegrams whose group addresses are stored in its filter table.
Source
KNX Basic Course Documentation — 3.8 — p. 72
All proposed choices (exam context)
- A.It forwards all telegrams in both directions.
- B.It monitors the communication both ways and routes only telegrams whose group addresses are in its filter table.✓
- C.It blocks all traffic between the two lines.
- D.It converts individual addresses into group addresses.
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