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CPCT Fiber Optic Cabling & Termination Flashcards

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

Read the first 6 CPCT Fiber Optic Cabling & Termination flashcards as text

  1. Which fiber optic testing method measures the total end-to-end optical power loss of an installed link?

    Answer: Optical loss test set (OLTS) / light source and power meter

    An OLTS uses a calibrated light source injecting known power into one end while a power meter measures received power at the other end to calculate total insertion loss.

  2. What is the maximum channel insertion loss allowed for a TIA-568 OM3/OM4 fiber optic horizontal link up to 90 meters?

    Answer: 2.0 dB

    TIA-568 specifies a maximum channel insertion loss of 2.0 dB for OM3/OM4 multimode horizontal channels up to 90m, accounting for connectors, splices, and cable attenuation.

  3. What does EMI immunity mean in the context of fiber optic cabling?

    Answer: Fiber optic signals are carried as light and are not affected by electromagnetic interference

    Because data travels as light rather than electrical current, fiber optic cable is inherently immune to electromagnetic interference from motors, fluorescent lights, and other noise sources.

  4. Which fiber optic connector cleaning method is recommended by TIA-568 as the primary method before mating connectors?

    Answer: Dry cleaning with a one-click cleaner or lint-free wipe, followed by inspection with a fiber scope

    TIA-568 recommends dry cleaning first (one-click cleaner or dry IPA wipe) then inspecting with a fiber scope before mating, since contamination is the leading cause of fiber link failure.

  5. What is the purpose of a visual fault locator (VFL) in fiber optic work?

    Answer: To inject visible red laser light into the fiber to visually locate breaks, bends, or faulty connectors

    A VFL emits visible 650nm red laser light that "glows" through the fiber jacket or connector ferrule at fault points, allowing quick visual identification of breaks or poor connections.

  6. When documenting a fiber optic installation, which information is required per TIA-606 administration standards?

    Answer: Identifier labels for each cable, connector, and splice point; pathway routing; test records

    TIA-606 requires every cable, connector, and splice to be labeled with a unique identifier, with pathway routing documented and test records (OLTS/OTDR results) retained for future reference.