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Copper Cabling Flashcards

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

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  1. What conductor gauge is specified for standard Cat5e/Cat6 horizontal UTP cabling?

    Answer: 24 AWG solid copper

    TIA-568 specifies 24 AWG (American Wire Gauge) solid copper conductors for horizontal UTP cable runs.

  2. Which bonding method is required when terminating shielded twisted pair (STP) cable to maintain a continuous ground path?

    Answer: The cable shield must be bonded to the jack or panel ground at both ends of the link

    STP/FTP cable shields must be bonded at both ends to provide a complete ground return path; a shield grounded only at one end acts as an antenna rather than a shield.

  3. What is the maximum amount of untwisting allowed when terminating a Cat6 conductor pair to a 110-style IDC jack?

    Answer: 0.5 inches (13 mm)

    TIA-568 limits pair untwisting during termination to 0.5 inches (13 mm) for Cat6 to preserve the cable's crosstalk rejection characteristics.

  4. A technician must document a copper cabling installation per ANSI/TIA-606. What information is minimally required for each cable record?

    Answer: Cable identifier, both end locations, and media type

    TIA-606 requires each cable record to include a unique identifier, the locations of both termination ends, and the cable type/media as minimum documentation.

  5. What is the primary reason Cat6A U/UTP cable has a significantly larger outer diameter than Cat6 UTP cable?

    Answer: Thicker insulation and larger cable geometry are needed to reduce alien crosstalk (AXT) without a shield

    Unshielded Cat6A achieves AXT suppression through increased pair separation provided by its larger cable body and internal geometry rather than a metallic shield.

  6. When using a toner and probe to locate a specific cable among a large bundle, what is the correct technique to avoid false traces?

    Answer: Set the probe sensitivity to low and trace from the tone generator end toward the far end

    Using low sensitivity and working from the source forces the probe to respond only to the strongest (nearest) tone, preventing adjacent cables from triggering a false response.

  7. A TDR (Time Domain Reflectometer) test shows an impedance anomaly 47 meters from the test end. What does this most likely indicate?

    Answer: A physical fault such as a sharp bend, crush, or improper termination at that point in the cable

    A TDR sends a pulse and measures reflections from impedance changes; an anomaly mid-cable pinpoints a physical defect such as a kink, crush, or bad connection at that distance.