Practice Test Geeks(DCI) Data Cabling Installer Practice Test
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Cable Installation Techniques 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 Cable Installation Techniques flashcards as text

  1. What is the correct procedure when a cable tray changes direction horizontally by 90 degrees in a ceiling installation?

    Answer: Use a manufacturer-supplied horizontal elbow fitting

    Manufacturer-supplied horizontal elbow fittings are designed to make direction changes while maintaining cable tray continuity, structural integrity, and proper bend radius.

  2. What type of cable labeling is required by TIA-606 at each end of every installed cable?

    Answer: A machine-printed, permanent label identifying the cable's unique identifier

    TIA-606 requires machine-printed, durable labels with a unique identifier at both ends of every cable to ensure accurate documentation and traceability.

  3. Which grounding practice must be followed when installing shielded twisted pair (STP) cable to prevent ground loops?

    Answer: Ground the shield at one end only (typically the telecommunications room)

    Shielded cable should typically be grounded at one end (the telecommunications room/equipment room) to prevent ground loops that can introduce noise onto the shield.

  4. What is the minimum clearance that must be maintained between low-voltage data cables and fluorescent lighting fixtures per TIA-569?

    Answer: 125 mm (5 in)

    TIA-569 requires a minimum 125 mm (5 inch) separation between unshielded data cables and fluorescent lighting fixtures to reduce electromagnetic interference.

  5. When installing outlet boxes for data cabling in a commercial environment, what is the standard mounting height from the finished floor?

    Answer: 450 mm (18 in)

    TIA-569 recommends outlet boxes for horizontal cabling be mounted at 450 mm (18 inches) above the finished floor as the standard height for work area outlets.

  6. A technician needs to install cable above a drop ceiling in a building with an HVAC air-return plenum. Which cable jacket rating is the minimum requirement?

    Answer: CMP (Plenum rated)

    Any space used for HVAC air return requires CMP (plenum-rated) cable because the air movement can rapidly spread combustion products from non-plenum-rated cable jackets.

  7. Which installation error most commonly causes a 'split pair' fault detected during cable testing?

    Answer: Connecting wires from two different pairs to the same jack position

    A split pair occurs when one wire from each of two different pairs is incorrectly placed together at a termination, ruining the balanced twisted pair configuration needed for noise rejection.