RCDD · Question #361
The inadvertent transposition of two conductors of separate pairs is called what?
The correct answer is D. Split pair. A split pair occurs when one conductor from one twisted pair is swapped with a conductor from a different pair, breaking the balanced transmission that prevents crosstalk.
Question
The inadvertent transposition of two conductors of separate pairs is called what?
Options
- ATwisted pair
- BTransposed pairs
- CReversed pair
- DSplit pair
How the community answered
(31 responses)- A3% (1)
- B6% (2)
- C13% (4)
- D77% (24)
Why each option
A split pair occurs when one conductor from one twisted pair is swapped with a conductor from a different pair, breaking the balanced transmission that prevents crosstalk.
Twisted pair is the category name for the cable type itself, not a wiring fault.
'Transposed pairs' is not a recognized industry term for this specific wiring defect.
A reversed pair refers to swapping tip and ring within the same pair, not mixing conductors across different pairs.
A split pair is the specific industry term for the inadvertent transposition of conductors from two separate pairs. Because the twist of each pair is what cancels electromagnetic interference through noise cancellation, mixing conductors from different pairs destroys this balance and causes severe near-end crosstalk (NEXT), even though continuity tests may pass.
Concept tested: Split pair wiring fault identification
Source: https://www.bicsi.org/standards/referenced-standards/tia-568
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