Match each physical network cabling fault or symptom on the left with its most likely physical root cause on the right.
- Near-End Crosstalk (NEXT)Excessive untwisting of conductor pairs during modular connector termination.
- High Optical AttenuationDust, dirt, or oil contamination on the fiber optic ferrule end-face.
- Open PairA completely severed internal copper conductor wire breaking continuity.
- Short CircuitDamaged wire insulation causing two separate copper conductors to touch.
Cevap
Near-End Crosstalk (NEXT) pairs with excessive untwisting of conductor pairs during modular connector termination. High Optical Attenuation pairs with dust, dirt, or oil contamination on the fiber optic ferrule end-face. Open Pair pairs with a completely severed internal copper conductor wire breaking continuity. Short Circuit pairs with damaged wire insulation causing two separate copper conductors to touch.
Each physical symptom links to a specific physical fault mechanism: excessive pair untwisting degrades the noise-cancellation properties of UTP cables resulting in Near-End Crosstalk (NEXT); dirty fiber ferrules obstruct light flow causing optical loss; broken conductors cause open circuits; and touching conductors cause short circuits.
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Physical Cabling Fault Identification and Causes