In copper cabling testing, what does NEXT stand for?

• A. Near-End Crosstalk
• B. Network Extension Test
• C. Northward Electrical Transmission
• D. Null End Termination

Answer: (A)

Crosstalk between pairs in a multi-pair copper cable is the unwanted leakage of signal from one pair into another. NEXT stands for Near-End Crosstalk, which is the amount of this interference measured at the near end—the transmitter side of the cable. This position matters because NEXT reflects how much coupling occurs right at the point of transmission, before the signal travels down the cable and experiences other effects. Higher NEXT values (in dB) mean less interference, indicating better cable performance at the near end. It’s a standard metric used in evaluating category cabling and is different from Far-End Crosstalk (FEXT), which is measured at the far end. The other phrases aren’t standard terms used in copper cabling testing.