CT CCTV Systems Contractor Exam
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A|
Instant Download Pdf
1. What is the primary purpose of a CCTV system?
A. To provide electrical power to a building
B. To control HVAC equipment
C. To monitor and record video from designated areas
D. To provide telephone service
Answer: C. To monitor and record video from designated areas
Rationale: A CCTV system is designed primarily for video surveillance.
It uses cameras, transmission media, recording equipment, displays,
and related devices to observe and document activity in selected
areas.
2. Which component converts an optical image into an electrical
video signal?
,A. Monitor
B. Camera
C. DVR
D. Video balun
Answer: B. Camera
Rationale: The camera contains an image sensor that converts light
entering through the lens into an electrical signal. That signal is then
transmitted to recording, processing, or display equipment.
3. What does CCTV stand for?
A. Central Camera Transmission Video
B. Closed-Circuit Television
C. Controlled Communication Television
D. Continuous Circuit Television
Answer: B. Closed-Circuit Television
Rationale: CCTV means Closed-Circuit Television. Unlike broadcast
television, CCTV distributes video to a limited, designated group of
receivers or recording devices.
4. Which device is commonly used to record video from multiple
surveillance cameras?
,A. DVR
B. Transformer
C. UPS bypass switch
D. Patch panel
Answer: A. DVR
Rationale: A Digital Video Recorder (DVR) records video from
cameras, typically in systems using analog or coaxial camera
technology. It may also provide playback, remote viewing, and other
management functions.
5. What is the main advantage of a network video recorder (NVR)?
A. It eliminates the need for cameras
B. It is designed to record network-based video streams
C. It converts AC power into DC power
D. It replaces all network switches
Answer: B. It is designed to record network-based video streams
Rationale: An NVR receives and records digital video transmitted over
an IP network. IP cameras commonly send their video streams directly
through Ethernet infrastructure to the NVR.
6. Which type of camera generally provides the greatest flexibility
for remotely changing viewing direction and zoom?
, A. Fixed camera
B. PTZ camera
C. Dome-only camera
D. Bullet camera
Answer: B. PTZ camera
Rationale: PTZ means Pan-Tilt-Zoom. These cameras can move
horizontally, move vertically, and change optical or digital zoom,
allowing operators to monitor a wider range of locations.
7. What does PoE stand for?
A. Power over Ethernet
B. Protection of Equipment
C. Power on Equipment
D. Processing over Electronics
Answer: A. Power over Ethernet
Rationale: Power over Ethernet allows compatible devices such as IP
cameras to receive electrical power over Ethernet cabling while also
carrying network communications over the same cable.
8. Which cable is most commonly associated with traditional analog
CCTV video transmission?
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A|
Instant Download Pdf
1. What is the primary purpose of a CCTV system?
A. To provide electrical power to a building
B. To control HVAC equipment
C. To monitor and record video from designated areas
D. To provide telephone service
Answer: C. To monitor and record video from designated areas
Rationale: A CCTV system is designed primarily for video surveillance.
It uses cameras, transmission media, recording equipment, displays,
and related devices to observe and document activity in selected
areas.
2. Which component converts an optical image into an electrical
video signal?
,A. Monitor
B. Camera
C. DVR
D. Video balun
Answer: B. Camera
Rationale: The camera contains an image sensor that converts light
entering through the lens into an electrical signal. That signal is then
transmitted to recording, processing, or display equipment.
3. What does CCTV stand for?
A. Central Camera Transmission Video
B. Closed-Circuit Television
C. Controlled Communication Television
D. Continuous Circuit Television
Answer: B. Closed-Circuit Television
Rationale: CCTV means Closed-Circuit Television. Unlike broadcast
television, CCTV distributes video to a limited, designated group of
receivers or recording devices.
4. Which device is commonly used to record video from multiple
surveillance cameras?
,A. DVR
B. Transformer
C. UPS bypass switch
D. Patch panel
Answer: A. DVR
Rationale: A Digital Video Recorder (DVR) records video from
cameras, typically in systems using analog or coaxial camera
technology. It may also provide playback, remote viewing, and other
management functions.
5. What is the main advantage of a network video recorder (NVR)?
A. It eliminates the need for cameras
B. It is designed to record network-based video streams
C. It converts AC power into DC power
D. It replaces all network switches
Answer: B. It is designed to record network-based video streams
Rationale: An NVR receives and records digital video transmitted over
an IP network. IP cameras commonly send their video streams directly
through Ethernet infrastructure to the NVR.
6. Which type of camera generally provides the greatest flexibility
for remotely changing viewing direction and zoom?
, A. Fixed camera
B. PTZ camera
C. Dome-only camera
D. Bullet camera
Answer: B. PTZ camera
Rationale: PTZ means Pan-Tilt-Zoom. These cameras can move
horizontally, move vertically, and change optical or digital zoom,
allowing operators to monitor a wider range of locations.
7. What does PoE stand for?
A. Power over Ethernet
B. Protection of Equipment
C. Power on Equipment
D. Processing over Electronics
Answer: A. Power over Ethernet
Rationale: Power over Ethernet allows compatible devices such as IP
cameras to receive electrical power over Ethernet cabling while also
carrying network communications over the same cable.
8. Which cable is most commonly associated with traditional analog
CCTV video transmission?
