Practice Test Geeks(DCI) Data Cabling Installer Practice Test
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Copper Installation Flashcards

7 cards from real DCI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Copper Installation flashcards as text

  1. What is the primary reason copper cables should not be bundled tightly with cable ties over long runs?

    Answer: It can deform the cable and increase alien crosstalk

    Overtightening cable ties deforms the cable geometry, disrupts pair twists, and increases alien crosstalk (AXT) between adjacent cables.

  2. Which category of UTP cable first introduced alien crosstalk (AXT) testing as a required measurement?

    Answer: Category 6A

    Category 6A introduced mandatory alien crosstalk testing because at 10GBASE-T frequencies, interference between adjacent cables becomes significant.

  3. A cable tester reports 'FAIL – Wire Map: Pair Reversal on pair 2.' What does this indicate?

    Answer: The two wires of pair 2 are swapped at one end

    A pair reversal means the tip and ring (the two conductors) of a pair are swapped at one termination end.

  4. What does the acronym 'PSANEXT' stand for in copper cabling testing?

    Answer: Power Sum Alien Near-End Crosstalk

    PSANEXT (Power Sum Alien Near-End Crosstalk) measures the combined alien crosstalk interference from multiple surrounding cables at the near end.

  5. What is the standard maximum length for a horizontal cable run from the telecommunications room to the work area outlet?

    Answer: 90 meters

    ANSI/TIA-568 specifies a maximum of 90 meters (295 feet) for permanent horizontal cabling, leaving 10 meters for patch cords and equipment cords.

  6. Which copper cable installation practice helps reduce EMI susceptibility in a cable run near fluorescent lighting?

    Answer: Use shielded (STP/FTP) cable

    Shielded twisted pair (STP/FTP) cable provides a metallic barrier that attenuates external electromagnetic interference from sources like fluorescent lights.

  7. What is the correct procedure when a copper cable must cross a power cable in a conduit pathway?

    Answer: Cross at a 90-degree angle to minimize inductive coupling

    Crossing power and data cables at 90 degrees minimizes the inductive coupling area, reducing the potential for EMI.