Knowledge 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 Knowledge flashcards as text
What is the role of a video analytics engine in a modern CCTV system?
Answer: To automatically interpret video content and generate alerts based on defined rules such as intrusion or loitering
Video analytics uses algorithms to automatically analyze video streams and detect events such as perimeter breaches, abandoned objects, or crowd density changes, triggering alerts without human monitoring.
What does 'RTSP' stand for, and how is it used in IP camera systems?
Answer: Real-Time Streaming Protocol — used to establish and control media sessions for streaming IP camera video
RTSP (Real-Time Streaming Protocol) is a network control protocol used to establish and manage streaming media sessions, commonly used to access live video streams from IP cameras.
In CCTV camera specifications, what does 'sensitivity' (measured in lux) indicate?
Answer: The minimum amount of light the camera requires to produce a usable image
Sensitivity in lux indicates the minimum light level required for the camera to produce an acceptable image; lower lux values mean the camera performs better in darker conditions.
What is the function of a video matrix switcher in a large CCTV installation?
Answer: To allow any camera input to be routed to any monitor output in a flexible, cross-point switching arrangement
A video matrix switcher enables operators to route any camera feed to any monitor in the system, providing maximum flexibility in large control room installations.
Which camera type is best suited for monitoring a large open area such as a parking lot perimeter with a single camera?
Answer: Fisheye (360°) camera
A fisheye camera provides a 360° or 180° panoramic view, making it ideal for covering large open areas with a single device, though with some image distortion at the edges.
What is 'edge storage' in the context of IP cameras?
Answer: Recording video directly to a memory card (SD/microSD) inside the camera itself
Edge storage refers to the camera's ability to record video locally to an onboard SD or microSD card, providing backup recording if the network connection to the NVR is lost.
What is the significance of the IP66 rating for outdoor CCTV cameras?
Answer: The camera is dust-tight and protected against powerful water jets from any direction
IP66 is an Ingress Protection rating where '6' means fully dust-tight and the second '6' means protected against powerful water jets, making it suitable for outdoor installation in most weather conditions.