Practice Test Geeks(VDV) Voice Data Video Technician Certified Practice Test
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Testing and Certification 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.

Read the first 7 Testing and Certification flashcards as text

  1. What does the term 'Tier 1' testing mean in the context of fiber optic certification per TIA-526-14-B?

    Answer: Insertion loss testing using a light source and power meter

    Tier 1 fiber testing measures insertion loss using a calibrated light source and optical power meter, providing a pass/fail result against the loss budget.

  2. When certifying a structured cabling system, what does the 'channel' test configuration include that the 'permanent link' does not?

    Answer: The equipment patch cords at both ends

    The channel includes the horizontal cabling plus up to 10 meters of equipment and work area patch cords, while the permanent link excludes those patch cords.

  3. A technician notices that an OTDR trace shows a gain spike at a connector location. What does this likely indicate?

    Answer: A transition from higher-loss to lower-loss fiber (connector appears as a false gain)

    A gain spike (gainer) on an OTDR trace at a connector usually indicates a transition from fiber with higher backscatter coefficient to fiber with lower backscatter, creating a false gain artifact.

  4. What is the maximum allowable insertion loss for a single multimode fiber connector per TIA-568-C.3?

    Answer: 0.3 dB

    TIA-568-C.3 specifies a maximum of 0.3 dB insertion loss for each mated connector pair in a multimode fiber link.

  5. During a VDV certification test, what does a high NEXT (Near-End Crosstalk) value in dB indicate?

    Answer: Good pair isolation with minimal interference

    NEXT is measured as a loss figure, so a higher dB value means more attenuation of the crosstalk signal, indicating better isolation and less interference.

  6. Which test instrument is specifically used to verify the end-face geometry and cleanliness of a fiber optic connector?

    Answer: Fiber inspection probe/microscope

    A fiber inspection probe or microscope is used to visually examine connector end-faces for contamination, scratches, and pits that could cause insertion loss.

  7. What is the recommended test method for verifying proper operation of a PoE (Power over Ethernet) installation?

    Answer: PoE tester that verifies voltage, current, and power classification

    A dedicated PoE tester verifies that the correct voltage and current are present and that the PSE correctly identifies the PD power class per IEEE 802.3af/at/bt.