Which of the following is NOT a typical test parameter when certifying copper cabling?

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Testing copper cabling certification focuses on how the link performs across its rated frequency range. Length is checked because exceeding the maximum run length affects attenuation and overall performance. NEXT, or near‑end crosstalk, measures how much signal on one pair disturbs a neighboring pair at the near end, which is critical for maintaining the cable’s data-carrying capability. Return Loss looks at reflections caused by impedance mismatches at connectors and terminations, revealing how well the links maintain signal integrity. Jacket color, by contrast, is a cosmetic/identification attribute and does not influence electrical performance, so it isn’t something a certifier measures or records as part of the test results.