Practice Test Geeks(VDV) Voice Data Video Technician Certified Practice Test
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Audio/Video Systems Installation 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 Audio/Video Systems Installation flashcards as text

  1. When installing ceiling speakers in a commercial space, what is the recommended minimum distance from a speaker to a wall to avoid comb filtering?

    Answer: 4 feet

    Placing ceiling speakers at least 4 feet from walls minimizes comb filtering caused by early reflections interfering with direct sound.

  2. Which cable type is most appropriate for running a balanced audio signal over 100 feet to minimize noise pickup?

    Answer: Shielded twisted pair (STP) with XLR connectors

    Shielded twisted pair with XLR connectors carries balanced audio signals, which reject common-mode noise over long cable runs.

  3. A projector is displaying a washed-out image in a room with high ambient light. Which specification should be increased when selecting a replacement projector?

    Answer: ANSI lumens output

    Higher ANSI lumens output overcomes ambient light interference, producing a brighter and more visible projected image.

  4. What is the purpose of a rack-mount UPS (Uninterruptible Power Supply) in an AV equipment rack?

    Answer: To provide clean power and protect equipment during outages

    A rack-mount UPS conditions incoming power and provides battery backup to prevent equipment damage and data loss during power interruptions.

  5. When terminating an RJ-45 connector for a VoIP phone installation, which wiring standard is most commonly used in the United States?

    Answer: Either T568A or T568B, but consistently throughout the installation

    Both T568A and T568B are acceptable, but the same standard must be used consistently on both ends of every cable in the installation.

  6. Which video signal format provides the highest quality uncompressed signal for short-distance professional AV connections?

    Answer: SDI (Serial Digital Interface)

    SDI carries uncompressed digital video and audio over a single coaxial cable and is the professional broadcast standard for high-quality short-distance connections.

  7. A customer reports that their newly installed flat-panel display flickers intermittently. What is the most likely cause when using an HDMI connection?

    Answer: A loose or damaged HDMI cable

    Intermittent HDMI flickering is most commonly caused by a loose connection or a damaged cable failing to maintain a stable HDCP handshake.