Question
Which three group address representations can be selected for an ETS project?
Answer
C — 3-level (main/middle/sub), 2-level (main/sub) and a freely defined structure
Correct: The source lists these three representation options.
Source
KNX Basic Course Documentation — 3.2.1 — p. 33
All proposed choices (exam context)
- A.1-level, 2-level and 3-level numeric
- B.Area/Line/Device, Main/Sub and free
- C.3-level (main/middle/sub), 2-level (main/sub) and a freely defined structure✓
- D.Decimal, hexadecimal and binary
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