CSS Security Technology and Solutions 3 — Questions and Answers
Question 1: What is the function of a video management system (VMS)?
- Software that manages, records, and retrieves video from IP cameras (Correct answer)
- Hardware that amplifies analog video signals
- A device that converts IP cameras to analog output
- A cloud service exclusively for storing access control logs
Correct answer: Software that manages, records, and retrieves video from IP cameras
A VMS is the software platform used to configure, record, monitor, and retrieve video footage from networked IP cameras.
Question 2: A client is concerned about tailgating at a secure entrance. Which solution best addresses this?
- Mantrap or security vestibule with anti-passback (Correct answer)
- Standard single door with card reader
- Motion detector near the entrance
- Glass break sensor on perimeter windows
Correct answer: Mantrap or security vestibule with anti-passback
A mantrap (security vestibule) with anti-passback ensures only one person can enter per credential presentation, preventing tailgating.
Question 3: Which wireless protocol is most commonly used for short-range communication between access control credentials and readers?
- 125 kHz proximity or 13.56 MHz RFID (HID) (Correct answer)
- Bluetooth 5.0 long range
- Zigbee mesh networking
- 802.11ac Wi-Fi
Correct answer: 125 kHz proximity or 13.56 MHz RFID (HID)
125 kHz proximity cards and 13.56 MHz RFID smart cards (such as HID iCLASS) are the dominant technologies for credential-to-reader communication in access control.
Question 4: What does 'resolution' refer to in the context of video surveillance?
- The number of pixels in a camera image, affecting detail and clarity (Correct answer)
- The frame rate at which video is captured per second
- The compression algorithm used to store video files
- The distance at which a camera can detect motion
Correct answer: The number of pixels in a camera image, affecting detail and clarity
Resolution measures the pixel count of a camera's image; higher resolution captures more detail, enabling better identification of subjects.
Question 5: A prospect asks about 'edge recording' in IP cameras. What does this mean?
- Video is stored directly on an SD card within the camera itself (Correct answer)
- Video is sent exclusively to a remote cloud server
- Recording only occurs at the edges of the camera's field of view
- The camera only records at the edges of a defined motion zone
Correct answer: Video is stored directly on an SD card within the camera itself
Edge recording means the camera stores video locally on an onboard SD card, providing recording capability even if network connectivity is lost.
Question 6: Which alarm panel feature allows sensors to be temporarily disabled without disarming the entire system?
- Zone bypassing (Correct answer)
- Entry/exit delay
- Cross-zoning
- Duress code activation
Correct answer: Zone bypassing
Zone bypassing lets a user disable a specific sensor (e.g., an open window) while keeping the rest of the alarm system fully armed.
Question 7: What is 'video analytics' in modern surveillance systems?
- Software that automatically detects events like loitering, line crossing, or object removal in video (Correct answer)
- The manual process of reviewing recorded footage
- A hardware chip that improves camera image quality
- A reporting tool that counts the number of cameras on a network
Correct answer: Software that automatically detects events like loitering, line crossing, or object removal in video
Video analytics uses AI and algorithms to automatically detect predefined events or behaviors in live or recorded video, reducing the need for constant manual monitoring.
CSS Security Technology and Solutions 3
What is the function of a video management system (VMS)?