Practice Test Geeks(CBT) Certified Broadcast Technician Practice Test
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Broadcast Networking & IP Systems Flashcards

7 cards from real CBT 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 does the acronym SDN stand for in the context of modern broadcast facilities, and what is its benefit?

    Answer: Software-Defined Networking — allows network configuration and routing via software rather than manual hardware configuration

    Software-Defined Networking (SDN) centralizes network control in software, allowing broadcast engineers to dynamically reconfigure routing, bandwidth, and policies without physically touching switch hardware.

  2. Which Quality of Service (QoS) mechanism is most critical for prioritizing time-sensitive media traffic in a broadcast IP network?

    Answer: DSCP (Differentiated Services Code Point) marking

    DSCP marking classifies packets so network switches and routers can prioritize media traffic, ensuring low latency and minimal jitter for time-sensitive video and audio streams.

  3. In broadcast IP systems, what is the significance of the 'buffer delay' parameter when configuring an RTP receiver?

    Answer: It defines the amount of time the receiver waits to accommodate network jitter before presenting the stream

    Buffer delay (dejitter buffer) allows the receiver to absorb variations in packet arrival times (jitter) caused by network conditions, presenting a smooth, continuous stream to downstream equipment.

  4. What is the purpose of the AMWA (Advanced Media Workflow Association) IS-05 specification?

    Answer: Providing a RESTful API for making and breaking connections between NMOS-compatible devices

    AMWA IS-05 (Device Connection Management) defines a RESTful API for connecting and disconnecting senders and receivers in an NMOS-compatible IP broadcast environment.

  5. Which physical layer technology is most commonly used for 10GbE and 25GbE links within a broadcast IP facility's core infrastructure?

    Answer: Single-mode fiber optic cabling

    Single-mode fiber optic cabling supports 10GbE, 25GbE, and higher speeds over long distances with low latency and is the dominant physical layer in professional broadcast IP facilities.

  6. In IP broadcast, what is the key difference between a 'sender' and a 'receiver' as defined by SMPTE ST 2110?

    Answer: A sender is any device that originates an RTP media stream; a receiver is any device that consumes that stream

    In SMPTE ST 2110 terminology, a sender is any device (camera, audio interface, etc.) that generates and transmits an RTP media stream, while a receiver is any device that subscribes to and processes that stream.

  7. What is the primary reason broadcast IP networks prefer UDP over TCP for real-time media transport?

    Answer: UDP has lower overhead and avoids TCP's retransmission delays, which are unacceptable in live broadcast

    UDP's connectionless, low-overhead nature avoids TCP's retransmission and congestion-control mechanisms, which would introduce unacceptable latency and jitter in live broadcast applications.