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Video Surveillance System Design Flashcards

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

Read the first 7 Video Surveillance System Design flashcards as text

  1. What is the primary function of a video management system (VMS) in a large-scale CCTV deployment?

    Answer: To centrally manage, record, and retrieve video from multiple IP cameras

    A VMS provides a centralized software platform for managing IP camera feeds, configuring recording schedules, and searching archived video across a large installation.

  2. When designing a CCTV system for a school, which privacy consideration is most critical?

    Answer: Ensuring cameras do not cover restrooms, locker rooms, or other private areas

    Legal and ethical requirements prohibit camera placement in areas where individuals have a reasonable expectation of privacy, such as restrooms and locker rooms.

  3. What is the purpose of camera masking (privacy zones) in a CCTV system?

    Answer: To block out specific areas within the camera's view from being recorded or displayed

    Privacy masking allows administrators to digitally block portions of the camera's view (e.g., a neighbor's window) to comply with privacy laws or organizational policy.

  4. Which cable type is the industry standard for transmitting both power and data to IP cameras in modern system designs?

    Answer: Cat5e or Cat6 Ethernet cable with PoE

    Cat5e/Cat6 with Power over Ethernet (PoE) is the standard for IP cameras, delivering both network data and electrical power through a single cable run.

  5. What is 'ONVIF' compliance important for in a multi-vendor CCTV system design?

    Answer: It provides interoperability between cameras and VMS from different manufacturers

    ONVIF is an open industry standard that allows cameras, recorders, and software from different manufacturers to communicate and work together seamlessly.

  6. A designer needs to calculate storage for 16 cameras recording continuously at 4Mbps for 30 days. What is the approximate total storage required?

    Answer: About 10 TB

    16 cameras × 4 Mbps × 86,400 sec/day × 30 days ÷ 8 bits/byte ÷ 1,000,000,000 ≈ 20.7 TB, making ~26 TB the closest realistic estimate with overhead.

  7. What is the main design consideration when placing cameras near bright light sources such as windows or floodlights?

    Answer: Avoiding backlight situations or choosing cameras with BLC or WDR

    Bright light sources behind subjects cause silhouetting; Back Light Compensation (BLC) or WDR technology corrects this to provide usable images of subjects.