Practice Test Geeks(CST) Certified Surveillance Technician Practice Test
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IP Camera & PoE Networking Flashcards

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

Read the first 7 IP Camera & PoE Networking flashcards as text

  1. Which IEEE standard introduced 802.3bt (PoE++) and what is its maximum power delivery per port?

    Answer: Introduced in 2018; maximum 90W per port

    IEEE 802.3bt was ratified in 2018 and supports up to 90W per port (Type 4), enabling PTZ cameras, multi-sensor units, and heated housings.

  2. A technician needs to verify that a specific IP camera can be reached from the NVR. Which command-line tool provides the quickest initial connectivity test?

    Answer: ping

    The ping command sends ICMP echo requests to verify basic IP-layer connectivity between the NVR and the camera's IP address.

  3. What is the effect of enabling 'multicast streaming' on an IP camera in a large surveillance deployment?

    Answer: A single video stream is transmitted and shared by multiple viewers simultaneously

    Multicast sends one stream that multiple clients receive simultaneously, reducing bandwidth compared to individual unicast streams for each viewer.

  4. A dome camera installed outdoors shows condensation inside the dome. Which IP rating best indicates the camera is sealed against water ingress?

    Answer: IP66

    IP66 indicates complete protection against dust ingress and protection against powerful water jets, suitable for outdoor camera installations.

  5. When using QoS (Quality of Service) on a network with IP cameras, which traffic type should typically receive the highest priority?

    Answer: Live video streams from cameras

    Live video streams are time-sensitive and should receive highest QoS priority to prevent latency and frame drops that affect real-time monitoring.

  6. An IP camera manufacturer specifies a minimum illumination of 0.001 lux. What does this indicate about the camera?

    Answer: The camera can produce usable video in near-total darkness

    A minimum illumination of 0.001 lux indicates the camera can produce a usable image in near-complete darkness, typically using a large sensor or starlight technology.

  7. What is the role of an NTP server in an IP camera network?

    Answer: To synchronize the clocks of all cameras to a common time reference

    NTP (Network Time Protocol) synchronizes camera clocks to an accurate time source, ensuring timestamps on recorded footage are consistent and legally reliable.