CCTV System Components

Which type of camera is designed to pan, tilt, and zoom to monitor a wide area?

• AFixed dome camera
• BPan-Tilt-Zoom (PTZ) camera✓
• CBullet camera
• DThermal camera

Answer: PTZ cameras can pan left/right, tilt up/down, and zoom in/out, covering larger areas than fixed cameras.

What is the primary advantage of an IP camera compared to an analogue camera?

• ALower resolution
• BRequires less cabling
• CHigher resolution and remote access capability over networks✓
• DWorks without power

Answer: IP cameras transmit digital video over networks, enabling higher resolution, remote access, and more scalable systems.

What does DVR stand for in CCTV systems?

• ADigital Video Recorder✓
• BDirect Visual Recording
• CData Verification System
• DDigital Viewfinder Relay

Answer: DVR (Digital Video Recorder) captures and stores video from analogue cameras to a hard drive or storage device.

What is the main function of an NVR in a CCTV system?

• ARecords analogue video only
• BRecords digital IP video and stores it for playback and evidence✓
• CControls camera movement only
• DProvides camera power only

Answer: An NVR (Network Video Recorder) captures, stores, and manages digital video from IP cameras.

Which type of camera housing provides protection while concealing the camera direction?

• ABullet camera
• BDome camera✓
• CTurret camera
• DPan-tilt camera

Answer: Dome cameras have a protective dome that makes it difficult to determine which direction the camera is actually pointing.

What is the purpose of Cat 5/Cat 6 cabling in CCTV systems?

• AOnly for electrical power
• BCarries video signal only
• CTransmits data and Power-over-Ethernet (PoE) for IP cameras✓
• DUsed for analogue systems only

Answer: Cat 5/Cat 6 cables carry Ethernet data and can deliver PoE power for IP cameras in modern CCTV systems.

Which camera resolution is generally considered Full HD (High Definition)?

• A480p
• B720p
• C1080p (1920x1080)✓
• D2K

Answer: 1080p (1920x1080 pixels) is the standard Full HD resolution for modern CCTV systems.

What does the field of view (FoV) of a camera determine?

• AThe brightness of the image
• BHow much area the camera can see (width and height of coverage)✓
• CThe recording speed
• DThe lens colour

Answer: Field of View determines the width and height of the area a camera can observe.

Which type of lens provides a wider field of view but at closer distances (wide angle)?

• ATelephoto lens
• BStandard lens
• CWide-angle lens (e.g., 2.8mm)✓
• DVarifocal lens

Answer: Wide-angle lenses (smaller mm values like 2.8mm) provide a broader field of view but limited zoom capability.

What is the purpose of infrared (IR) or thermal cameras in CCTV systems?

• AReduces system cost
• BProvides monitoring in low light or darkness using thermal imaging✓
• CIncreases resolution
• DCompresses video files

Answer: Thermal/IR cameras detect heat signatures, enabling monitoring in complete darkness and low-light conditions.

What is a monitor or display unit's primary function in a CCTV system?

• ARecords video
• BControls camera movement
• CDisplays live or recorded video feed for observation✓
• DCompresses footage

Answer: Monitors display live feeds or recorded video from cameras for the operator to observe.

Which CCTV system component is responsible for managing multiple camera feeds and switching between them?

• AThe camera
• BMatrix switcher or control system✓
• CCabling only
• DPower supply

Answer: A matrix switcher or control system allows operators to manage and switch between multiple camera feeds on a monitor.