CCTV Technician Certification Exam — Questions and Answers

Question 1: When writing a CCTV usage policy, which element is most critical for establishing operator accountability?

Specifying the brand and model of cameras to be used
Listing the physical locations of all camera installations
Describing the technical specifications of the recording system
Defining clear, documented procedures for authorized access and use of footage (Correct answer)

Correct answer: Defining clear, documented procedures for authorized access and use of footage

Clear, documented access and usage procedures establish accountability by defining who can access footage, under what conditions, and for what purposes.

Question 2: What is the function of a CCTV system's 'motion detection zone' setting?

Set the geographic boundaries for camera PTZ patrol routes
Restrict recording or alerts to specific regions within the camera's field of view where movement is relevant (Correct answer)
Define areas of the frame where the camera automatically zooms in
Configure the infrared illuminator's coverage angle

Correct answer: Restrict recording or alerts to specific regions within the camera's field of view where movement is relevant

Motion detection zones allow operators to define specific areas within the frame that trigger recording or alerts when motion is detected, ignoring movement in excluded areas like busy streets.

Question 3: A user reports that the video from a specific IP camera is intermittently freezing and showing pixelation, while other cameras on the same network switch are working perfectly. The technician has already verified the camera's power supply. What is the next logical step in troubleshooting this issue?

Re-terminate the network cable at both the camera and switch ends. (Correct answer)
Change the system's time using an NTP server.
Replace the Network Video Recorder (NVR).
Increase the camera's video resolution to 4K.

Correct answer: Re-terminate the network cable at both the camera and switch ends.

Intermittent freezing and pixelation on a single camera often point to a data transmission problem, such as packet loss or a physical layer network issue. A poorly terminated network cable (e.g., a bad crimp on an RJ45 connector, or wires not in the correct order) is a very common cause of such issues. Since other cameras on the same switch are fine, it helps isolate the problem to the specific camera or its direct connection.

Question 4: When a designer specifies 'detection' level coverage versus 'identification' level coverage, what is the main difference?

Detection uses analog cameras; identification uses IP cameras
Detection uses color cameras; identification uses black-and-white
Detection records continuously; identification only triggers on motion
Detection confirms presence of a person; identification captures enough detail to recognize who the person is (Correct answer)

Correct answer: Detection confirms presence of a person; identification captures enough detail to recognize who the person is

Detection verifies that a person or object is present in an area, while identification requires sufficient image resolution to distinguish specific facial or physical features.

Question 5: Which camera component determines how much light is needed to produce a usable image?

The image sensor sensitivity (measured in lux) (Correct answer)
The lens focal length
The video compression codec
The housing IR cut filter

Correct answer: The image sensor sensitivity (measured in lux)

The image sensor's minimum illumination rating (in lux) indicates how little light is needed to capture a usable image — lower lux values mean better low-light performance.

Question 6: What is the primary advantage of using a varifocal lens camera in system design?

It provides 360-degree coverage
It automatically adjusts to IR illumination
It eliminates the need for a DVR
It allows the installer to adjust the focal length to match the coverage area (Correct answer)

Correct answer: It allows the installer to adjust the focal length to match the coverage area

Varifocal lenses can be manually or motorized-adjusted to a range of focal lengths, giving installers flexibility to optimize field of view after mounting.

Question 7: When designing a system for a parking lot, which camera type is most commonly recommended to cover wide areas efficiently?

Wide-angle or fisheye cameras (Correct answer)
Pinhole cameras for covert coverage
PTZ cameras set to tour preset
Bullet cameras with telephoto lenses

Correct answer: Wide-angle or fisheye cameras

Wide-angle or fisheye cameras maximize coverage area per camera, reducing the number of units needed for large open spaces like parking lots.

Question 8: Which grounding issue commonly causes 'hum bars' (horizontal rolling lines) in analog CCTV footage?

Ground loop interference between equipment at different potentials (Correct answer)
Overloaded PoE switch ports
Excessive cable length without amplification
Incorrect frame rate settings on the DVR

Correct answer: Ground loop interference between equipment at different potentials

Ground loops occur when two pieces of equipment are grounded at different electrical potentials, inducing 50/60Hz AC interference into the video signal.

Question 9: A Network Video Recorder (NVR) differs from a DVR primarily because it:

Only supports black-and-white cameras
Receives pre-encoded digital video streams over a network (Correct answer)
Uses coaxial cable to receive video
Processes video compression internally using a chip

Correct answer: Receives pre-encoded digital video streams over a network

An NVR receives already-encoded digital video from IP cameras over an Ethernet network, whereas a DVR encodes incoming analog signals itself.

Question 10: Which format is typically used for exporting CCTV evidence clips for law enforcement?

Raw camera sensor data
Only cloud-shared links
Proprietary encrypted format with a bundled player (Correct answer)
Uncompressed BMP image sequences

Correct answer: Proprietary encrypted format with a bundled player

Many DVR/NVR manufacturers export clips in a proprietary encrypted format bundled with a standalone player to preserve chain of custody and prevent tampering.

Question 11: Which compression technique does H.264 use to reduce file size by only encoding changes between frames?

Run-length encoding (RLE)
Inter-frame compression using P-frames and B-frames (Correct answer)
Lossless compression using LZ77
Intra-frame compression (I-frames only)

Correct answer: Inter-frame compression using P-frames and B-frames

H.264 uses inter-frame compression with P-frames (predicted) and B-frames (bi-directional) that store only the differences from reference frames.

Question 12: What does 'bitrate' measure in an IP video stream?

The resolution of each video frame
The compression ratio applied to each frame
The number of frames captured per second
The amount of data transmitted per unit of time (Correct answer)

Correct answer: The amount of data transmitted per unit of time

Bitrate measures the volume of data (bits) transmitted per second, directly affecting video quality and bandwidth consumption.

Question 13: What is the main design consideration when placing cameras near bright light sources such as windows or floodlights?

Avoiding backlight situations or choosing cameras with BLC or WDR (Correct answer)
Using cameras with longer focal lengths
Selecting cameras with higher frame rates
Increasing the recording bitrate to compensate

Correct 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.

Question 14: Which cable type is the industry standard for transmitting both power and data to IP cameras in modern system designs?

RG-59 coaxial cable
Cat5e or Cat6 Ethernet cable with PoE (Correct answer)
RS-485 twisted pair cable
Fiber optic cable

Correct 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.

Question 15: When a minor is captured on CCTV committing a crime, sharing that footage publicly would most likely violate:

The Copyright Act of 1976
OSHA recordkeeping requirements
Juvenile privacy protections under state and federal law (Correct answer)
The Fourth Amendment to the US Constitution

Correct answer: Juvenile privacy protections under state and federal law

Juvenile offenders are protected by privacy laws that restrict public disclosure of their identities and involvement in criminal matters.

Question 16: An operator is asked to export footage from a specific time window for law enforcement. What should the operator do BEFORE exporting?

Verify the chain of custody procedure and document the export request (Correct answer)
Convert the footage to a consumer video format for easy playback
Delete the original footage after exporting to free storage space
Edit the footage to remove unrelated events

Correct answer: Verify the chain of custody procedure and document the export request

Proper chain of custody documentation must be followed before exporting evidence to ensure it is legally admissible.

Question 17: What is the primary risk of storing all CCTV footage solely in the cloud?

Dependence on continuous internet connectivity and upload bandwidth (Correct answer)
Higher video resolution is required
Cloud providers cannot store video longer than 30 days
Cloud storage cannot support H.264 video

Correct answer: Dependence on continuous internet connectivity and upload bandwidth

Cloud-only storage requires a reliable, high-bandwidth internet connection; an outage or bandwidth bottleneck will cause recording gaps.

Question 18: What is 'OSHA lockout/tagout' relevant to in CCTV installation work?

Safely de-energizing electrical circuits before installation or maintenance work (Correct answer)
Tagging cables for identification in conduit runs
Locking DVR systems against unauthorized access
Securing camera housings against vandalism

Correct answer: Safely de-energizing electrical circuits before installation or maintenance work

OSHA's lockout/tagout procedures require workers to de-energize and lock out electrical circuits before performing installation or maintenance to prevent electrocution.

Question 19: What is the recommended minimum overlap percentage when planning multiple camera fields of view for complete coverage?

20% (Correct answer)
5%
10%
50%

Correct answer: 20%

A 20% overlap between adjacent camera views ensures there are no blind spots and provides redundancy at coverage boundaries.

Question 20: What does the term 'field of view' (FOV) refer to in CCTV systems?

The maximum recording resolution of the camera
The signal range of a wireless transmitter
The depth of the camera housing
The angular extent of the observable area captured by the camera lens (Correct answer)

Correct answer: The angular extent of the observable area captured by the camera lens

Field of view is the angular extent of the scene that a camera lens can capture, typically measured in degrees horizontally and vertically.

Question 21: What does the term 'compression ratio' refer to in video storage?

The ratio of bitrate to frame rate
The ratio of original file size to compressed file size (Correct answer)
The ratio of frames recorded per second
The ratio of resolution width to height

Correct answer: The ratio of original file size to compressed file size

Compression ratio describes how much the original video data has been reduced in size after encoding.

Question 22: What is the purpose of Network Time Protocol (NTP) in an IP camera system?

Reduce network latency for live video streams
Synchronize camera clocks for accurate timestamps on recorded footage (Correct answer)
Enable remote firmware updates to cameras
Provide automatic IP address assignment to cameras

Correct answer: Synchronize camera clocks for accurate timestamps on recorded footage

NTP synchronizes all cameras and recording devices to the same accurate time, ensuring timestamps are consistent and legally defensible.

Question 23: What is the purpose of 'privacy masking' on a CCTV camera?

Blocking defined areas within the camera's view from being recorded or displayed (Correct answer)
Masking the camera's identity from network scanning tools
Encrypting the video stream to prevent interception
Preventing night-vision mode from activating in residential areas

Correct answer: Blocking defined areas within the camera's view from being recorded or displayed

Privacy masking allows operators to permanently black out specific areas in the camera's field of view (such as neighboring property) to avoid recording areas where there is no legal right to surveil.

Question 24: What is the function of an OSD (On-Screen Display) menu in a CCTV camera?

To overlay text alerts from the alarm system onto the video feed
To display time and date stamps on recorded footage only
To switch between different recording resolutions remotely
To allow configuration of camera settings such as brightness, white balance, and exposure directly on the monitor (Correct answer)

Correct answer: To allow configuration of camera settings such as brightness, white balance, and exposure directly on the monitor

The OSD menu allows installers and operators to configure camera parameters like brightness, contrast, and white balance directly through the camera's video output.

Question 25: What is the purpose of a surge protector on a CCTV camera's power and video lines?

To filter out RF interference on video lines
To protect equipment from voltage spikes caused by lightning or power surges (Correct answer)
To convert AC power to DC for camera operation
To regulate voltage to the correct operating level

Correct answer: To protect equipment from voltage spikes caused by lightning or power surges

Surge protectors clamp transient voltage spikes caused by lightning strikes or switching events, protecting cameras and recording equipment from damage.

Question 26: What does 'forensic integrity' mean when handling CCTV recordings as evidence?

Watermarking video with the operator's credentials
Preserving the original file unaltered and documenting the chain of custody (Correct answer)
Compressing footage to a standard format for court compatibility
Enhancing video quality with AI upscaling before submission

Correct answer: Preserving the original file unaltered and documenting the chain of custody

Forensic integrity requires that original recordings remain unmodified and that every person who accessed them is documented to ensure admissibility in court.

Question 27: What is the advantage of using fiber optic cable for long-distance CCTV camera runs?

It is immune to electromagnetic interference and supports very long runs (Correct answer)
It is cheaper than coaxial cable
It requires no transceivers at either end
It natively supports PoE power delivery

Correct answer: It is immune to electromagnetic interference and supports very long runs

Fiber optic cable transmits data as light pulses, making it immune to EMI and RFI, and supports runs of several kilometers without signal degradation.

Question 28: Which PoE standard provides up to 30W of power per port to connected devices?

IEEE 802.3af (PoE)
IEEE 802.3bt (PoE++)
IEEE 802.3at (PoE+) (Correct answer)
IEEE 802.1Q

Correct answer: IEEE 802.3at (PoE+)

IEEE 802.3at (PoE+) provides up to 30W of power per port, compared to the 15.4W limit of the original 802.3af standard.

Question 29: What are the requirements that companies have for CCTV operators under the Display Screen Equipment Regulations?

Noise level monitoring
Temperature monitoring
Ventilation assessment
Workstation risk assessment (Correct answer)

Correct answer: Workstation risk assessment

The Display Screen Equipment (DSE) Regulations (e.g., in the UK) require employers to protect workers who regularly use DSE, such as CCTV operators. A key requirement is to conduct a workstation risk assessment to identify and mitigate risks related to posture, lighting, glare, and other ergonomic factors. This ensures that the workstation is set up safely and comfortably to prevent health issues like musculoskeletal disorders or eye strain.

Question 30: In CCTV operations, what is a 'blind spot'?

An area within a facility that is not covered by any camera (Correct answer)
A camera that is recording in low resolution
A scheduled gap in recording time
A monitor that has display issues

Correct answer: An area within a facility that is not covered by any camera

A blind spot is any area within a facility that falls outside the field of view of all installed cameras, leaving it unmonitored.

Question 31: A technician is configuring a large video wall in a security operations center where 20 operators need to view the same 30 high-definition camera feeds simultaneously. To minimize network bandwidth consumption, which network transmission method is most efficient for sending the video streams from the server to the operator workstations?

Multicast (Correct answer)
VPN Tunnel
Unicast
Broadcast

Correct answer: Multicast

Multicast is a one-to-many transmission method where the server sends a single stream that is replicated by network switches only to the specific clients that have requested it. This is far more efficient than unicast, which would require the server to send a separate, identical stream to each of the 20 operators, consuming significantly more bandwidth. Broadcast would send the stream to all devices on the network, which is inefficient and not targeted.

Question 32: A client wants to install a camera pointed towards a building entrance that has a glass door, leading to strong sunlight during the day. This lighting condition causes individuals entering the building to appear as dark silhouettes. Which camera feature is specifically designed to correct this issue by balancing the light for the entire scene?

Backlight Compensation (BLC)
Digital Noise Reduction (DNR)
Wide Dynamic Range (WDR) (Correct answer)
Highlight Compensation (HLC)

Correct answer: Wide Dynamic Range (WDR)

Wide Dynamic Range (WDR) technology is designed to handle scenes with a high contrast between bright and dark areas, such as a bright background and a dark foreground. It captures multiple exposures of the scene and combines them to create a single image where details in both the bright and dark areas are visible. BLC brightens the entire image, which can wash out the already bright background, while HLC is for suppressing bright sources like headlights.

Question 33: Which storage topology connects NVRs directly to a dedicated storage network separate from the camera network?

DAS (Direct Attached Storage)
NAS (Network Attached Storage)
Cloud-only storage
SAN (Storage Area Network) (Correct answer)

Correct answer: SAN (Storage Area Network)

A SAN provides a high-speed dedicated network for storage devices, keeping storage traffic separate from the IP camera data network.

Question 34: What is the function of a 'watchdog' feature in CCTV recorders?

To monitor camera lens cleanliness
To automatically reboot the recorder if it becomes unresponsive (Correct answer)
To alert security staff when motion is detected
To limit recording bandwidth during peak hours

Correct answer: To automatically reboot the recorder if it becomes unresponsive

A watchdog timer detects system hangs and automatically restarts the recorder to restore normal operation without manual intervention.

Question 35: A designer needs to calculate storage for 16 cameras recording continuously at 4Mbps for 30 days. What is the approximate total storage required?

About 10 TB (Correct answer)
About 2 TB
About 26 TB
About 500 GB

Correct 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.

Question 36: In a Physical Security Information Management (PSIM) system, what is the role of CCTV?

CCTV is one of several integrated data sources that PSIM correlates to provide unified situational awareness (Correct answer)
CCTV is made redundant and is no longer required once PSIM is implemented
CCTV serves only as a data storage repository for PSIM event logs
CCTV takes precedence over and controls all other security subsystems within the PSIM platform

Correct answer: CCTV is one of several integrated data sources that PSIM correlates to provide unified situational awareness

In a PSIM platform, CCTV video is one data stream among many — alongside alarms, access control, and environmental sensors — that the system correlates to give operators a comprehensive security picture.

Question 37: Which of the following protocols is primarily a 'network remote control' used to establish, manage, and terminate media sessions for IP cameras, often working in conjunction with RTP to transport the actual video data?

SMTP (Simple Mail Transfer Protocol)
RTMP (Real-Time Messaging Protocol)
RTSP (Real-Time Streaming Protocol) (Correct answer)
HTTP (Hypertext Transfer Protocol)

Correct answer: RTSP (Real-Time Streaming Protocol)

RTSP (Real-Time Streaming Protocol) is a network control protocol designed to manage media streaming sessions. It functions like a remote control for the video stream, issuing commands like 'play,' 'pause,' and 'stop.' It does not transmit the actual media data itself but works with the Real-time Transport Protocol (RTP) to handle the data transmission.

Question 38: Which maintenance task should be performed on a CCTV system at least once per year?

Cleaning camera lenses, checking housing seals, and verifying recording integrity (Correct answer)
Replacing all coaxial cables
Upgrading all cameras to the latest model
Changing the NVR's IP address

Correct answer: Cleaning camera lenses, checking housing seals, and verifying recording integrity

Annual preventive maintenance includes cleaning lenses for image clarity, inspecting weather seals for moisture ingress, and verifying recordings are being captured and stored correctly.

Question 39: What is the significance of ANSI/SIA D-100 standards in CCTV system design?

They set minimum frame rate requirements for law enforcement systems
They define cable color coding standards for security wiring
They establish certification levels for CCTV camera manufacturers
They provide documentation and drawing standards for electronic security systems including camera placement drawings (Correct answer)

Correct answer: They provide documentation and drawing standards for electronic security systems including camera placement drawings

ANSI/SIA D-100 establishes standards for electronic security system documentation, providing consistent symbols, drawing conventions, and documentation practices for system design.

Question 40: In the US, which constitutional amendment most directly limits government use of CCTV surveillance without a warrant?

Fourteenth Amendment (due process)
First Amendment (free speech)
Fifth Amendment (self-incrimination)
Fourth Amendment (unreasonable search and seizure) (Correct answer)

Correct answer: Fourth Amendment (unreasonable search and seizure)

The Fourth Amendment protects individuals from unreasonable government searches and seizures, which courts have applied to limit warrantless mass surveillance in spaces where there is a reasonable expectation of privacy.

Question 41: Under US federal law, is covert video surveillance of employees in restrooms or changing rooms permitted?

Yes, if employees are notified in the company handbook
Yes, if the business is classified as a high-security facility
Only if approved by an on-site legal officer and HR department
No, it is illegal and constitutes a serious federal and state criminal offense (Correct answer)

Correct answer: No, it is illegal and constitutes a serious federal and state criminal offense

Federal and state laws universally prohibit video surveillance in areas where individuals have a reasonable expectation of privacy, such as restrooms, locker rooms, and changing areas.

Question 42: What does the 'H' in H.265 video compression standard refer to?

High-efficiency
H stands for the ITU-T recommendation series (Correct answer)
Hybrid
Horizontal

Correct answer: H stands for the ITU-T recommendation series

H.265 belongs to the ITU-T 'H series' of recommendations covering audiovisual and multimedia systems.

Question 43: What does 'pixels per foot' (PPF) or 'pixels per meter' measurement determine in CCTV design?

The image detail available for a given subject size, determining if identification is possible (Correct answer)
The number of cameras required per square foot of coverage area
The frame rate needed for smooth motion capture
The total pixel count of the camera sensor

Correct answer: The image detail available for a given subject size, determining if identification is possible

PPF/PPM defines how much image detail is available for a target at a given distance, directly determining whether the system can detect, recognize, or identify a person.

Question 44: What advantage does edge-based video analytics (processing on the camera) offer compared to server-based analytics?

Longer video retention due to lower storage requirements
Reduced bandwidth and server load since processing occurs locally at the camera (Correct answer)
Higher accuracy due to dedicated server processing power
Simpler software licensing requirements at the NVR level

Correct answer: Reduced bandwidth and server load since processing occurs locally at the camera

Edge analytics performs video processing inside the camera itself, sending only metadata or alerts to the server, which significantly reduces network bandwidth usage.

Question 45: What is 'video redaction' used for in CCTV footage management?

Blurring or masking sensitive areas or individuals' identities in footage before sharing (Correct answer)
Compressing video files to save storage space
Permanently deleting footage after the retention period expires
Applying digital watermarks to prevent tampering

Correct answer: Blurring or masking sensitive areas or individuals' identities in footage before sharing

Video redaction tools blur or pixelate faces, license plates, or other sensitive information in footage before it is released in response to public records requests or litigation.

Question 46: An IP camera is configured with a static IP of 192.168.1.50 but the NVR subnet is 10.0.0.0/24. What is the most likely result?

The camera will not be discoverable by the NVR without routing (Correct answer)
The camera will use DHCP as a fallback
The NVR will assign a compatible IP automatically
The camera will auto-negotiate a new IP

Correct answer: The camera will not be discoverable by the NVR without routing

Devices on different subnets cannot communicate directly without a router, so the camera will be unreachable from the NVR.

Question 47: A technician notices video signal degradation over a long coaxial cable run. Which device should be installed to correct this?

Video balun
In-line video amplifier (Correct answer)
Video distribution amplifier
Video splitter

Correct answer: In-line video amplifier

An in-line video amplifier boosts the signal strength to compensate for attenuation over long coaxial cable runs.

Question 48: A financial institution requires a video storage solution for its 64-camera system that prioritizes high data redundancy and can withstand the failure of up to two hard drives simultaneously without any data loss. Which RAID level best meets this requirement?

RAID 6 (Correct answer)
RAID 10
RAID 1
RAID 5

Correct answer: RAID 6

RAID 6 extends RAID 5 by adding a second, independent parity block. This dual parity allows the array to remain operational and rebuild data even if two member drives fail at the same time, making it ideal for critical applications requiring high fault tolerance.

Question 49: What does 'conduit fill ratio' refer to in CCTV cable installation planning?

The proportion of power to data cables in shared routing
The ratio of shielded to unshielded cables in a run
The number of splices per conduit length
The percentage of a conduit's cross-sectional area occupied by cables (Correct answer)

Correct answer: The percentage of a conduit's cross-sectional area occupied by cables

Conduit fill ratio is the percentage of the conduit's interior cross-section occupied by cables; NEC guidelines typically limit fills to 40% for multiple cables to ensure heat dissipation and cable pull ease.

Question 50: What does 'RTSP' stand for, and how is it used in IP camera systems?

Real-Time Storage Protocol — used to write video data to network-attached storage
Real-Time Streaming Protocol — used to establish and control media sessions for streaming IP camera video (Correct answer)
Recorded Time Stamp Protocol — used to synchronize timestamps on recorded footage
Remote Terminal Security Protocol — used to encrypt camera login sessions

Correct 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.

Question 51: What is the maximum cable length for a standard Cat6 Ethernet run used for IP CCTV cameras?

500 meters
50 meters
100 meters (Correct answer)
250 meters

Correct answer: 100 meters

The IEEE 802.3 standard specifies a maximum segment length of 100 meters for Cat5e/Cat6 Ethernet cable used in IP networks including IP cameras.

Question 52: What does it mean for a CCTV system to be 'FedRAMP authorized' in a US government context?

The camera hardware is manufactured in a US-approved facility
The system uses only federally approved encryption algorithms
The integrator holds a federal contractor license
The system has been independently tested and approved for use in US federal government cloud environments (Correct answer)

Correct answer: The system has been independently tested and approved for use in US federal government cloud environments

FedRAMP (Federal Risk and Authorization Management Program) is a government-wide program providing standardized security assessment and authorization for cloud products used by federal agencies.

Question 53: Which wiring standard is used for RS-485 communication in PTZ CCTV camera control?

Four-conductor shielded cable
Standard Cat5 UTP with RJ45
Single-conductor coaxial
Two-wire twisted pair (differential signaling) (Correct answer)

Correct answer: Two-wire twisted pair (differential signaling)

RS-485 uses differential signaling over two wires (A and B), which provides noise immunity and allows control signals to travel up to 1,200 meters.

Question 54: Which standard defines minimum image quality requirements for CCTV footage used in forensic evidence in the US?

IEC 62676-4 (international standard for CCTV video quality) (Correct answer)
FBI-mandated minimum 720p resolution rule
NIST SP 800-111 surveillance imaging standard
ANSI/SIA CCTV Image Quality Standard

Correct answer: IEC 62676-4 (international standard for CCTV video quality)

IEC 62676-4 defines image quality requirements and performance criteria for CCTV cameras in surveillance applications, and is referenced by US practitioners for forensic-grade imaging standards.

Question 55: Which cable type is most commonly used for traditional analog CCTV camera installations?

RG-59 coaxial cable (Correct answer)
RS-485 twisted pair cable
Cat6 Ethernet cable
Fiber optic cable

Correct answer: RG-59 coaxial cable

RG-59 coaxial cable is the standard cable used for transmitting analog video signals in traditional CCTV installations.

Question 56: A 4MP IP camera streams at 15 fps using H.265. Compared to using H.264 at the same resolution and frame rate, storage requirements will typically be:

About the same
About 50% lower (Correct answer)
About 50% higher
About 75% lower

Correct answer: About 50% lower

H.265 (HEVC) achieves approximately 50% better compression than H.264 at equivalent quality, cutting storage requirements roughly in half.

Question 57: What is 'loitering detection' in a CCTV analytics system?

Detection of unattended bags or objects left in a scene
Facial recognition matching against a watchlist
An alert triggered when a person or object remains within a defined zone for longer than a set time (Correct answer)
Detection of objects moving faster than a defined speed threshold

Correct answer: An alert triggered when a person or object remains within a defined zone for longer than a set time

Loitering detection monitors the duration an object remains in a defined area, triggering an alert if it exceeds a preset time threshold.

Question 58: Which IP camera feature allows the camera to continue recording locally when network connectivity to the NVR is lost?

PoE passthrough
RTSP multicast
SD card edge storage (Correct answer)
ONVIF Profile S

Correct answer: SD card edge storage

SD card edge storage lets the camera record footage to an onboard memory card when the network or NVR is unavailable.

Question 59: A technician needs to run CCTV cable through a high-EMI industrial environment. Which cable type is most appropriate?

Cat5e UTP cable
Single-mode fiber optic cable (Correct answer)
RG-6 coaxial cable with foil and braid shielding
RG-59 coaxial cable

Correct answer: Single-mode fiber optic cable

Single-mode fiber optic cable transmits light signals, making it completely immune to electromagnetic interference — the best choice for high-EMI environments like factories with large motors.

Question 60: Why should CCTV recorders be protected by an uninterruptible power supply (UPS)?

To encrypt stored footage automatically
To maintain network connectivity for remote access
To prevent hard drive corruption and recording gaps caused by sudden power loss (Correct answer)
To boost recording frame rate during peak hours

Correct answer: To prevent hard drive corruption and recording gaps caused by sudden power loss

A sudden power cut during a write operation can corrupt the hard drive file system or lose in-buffer footage; a UPS provides time for a graceful shutdown.

Question 61: Which of the following is the LEAST critical factor when an organization defines its video surveillance retention policy?

The total available storage capacity.
The average time required to investigate an incident.
The brand of the hard drives used for storage. (Correct answer)
Applicable industry or legal requirements.

Correct answer: The brand of the hard drives used for storage.

A video retention policy dictates how long footage is kept, based on legal and regulatory mandates, the practical needs for incident investigation, and the physical limits of storage capacity. The specific brand of hard drives is a procurement and reliability detail, not a factor that defines the policy itself.

Question 62: What device is used to extend IP camera cable runs beyond the 100-meter Ethernet limit?

Video balun
Ethernet switch or media converter (Correct answer)
Coax splitter
Video amplifier

Correct answer: Ethernet switch or media converter

An Ethernet switch regenerates the signal at each hop, or a fiber media converter can extend the run over much longer distances using fiber optic cable.

Question 63: Which VLAN configuration best practice isolates IP camera traffic from general corporate network traffic?

Use the management VLAN for all camera traffic
Disable VLANs and use a flat network
Place cameras on the default VLAN 1
Assign cameras to a dedicated security VLAN (Correct answer)

Correct answer: Assign cameras to a dedicated security VLAN

Assigning cameras to a dedicated security VLAN segments surveillance traffic from corporate data, improving both security and performance.

Question 64: What does 'cable dressing' refer to in a professional CCTV installation?

Neatly organizing, bundling, and securing cables for a professional and maintainable finish (Correct answer)
Testing cable continuity after installation
Applying weatherproofing compound to outdoor cable terminations
Color-coding cables for identification at patch panels

Correct answer: Neatly organizing, bundling, and securing cables for a professional and maintainable finish

Cable dressing involves neatly routing, bundling, labeling, and securing cables using ties, clips, or trays to create an organized, professional, and maintainable installation.

Question 65: What is a 'heat map' generated by CCTV analytics used for?

Mapping the infrared illumination coverage of a camera
Visualizing areas of high activity or movement frequency over time (Correct answer)
Detecting fire or elevated temperature events in a scene
Showing the geographic location of all cameras on a site map

Correct answer: Visualizing areas of high activity or movement frequency over time

Analytics heat maps use color overlays on the camera image to show which areas of the scene have experienced the most activity over a defined time period.

Question 66: A security manager wants to reduce storage costs without shortening the 30-day retention period. What is the best approach?

Increase the DVR's processing speed
Switch from motion-triggered to continuous recording
Lower the recording resolution and frame rate during low-activity hours (Correct answer)
Replace all cameras with higher-megapixel models

Correct answer: Lower the recording resolution and frame rate during low-activity hours

Reducing resolution and frame rate during non-peak periods lowers daily data volume, maintaining the same retention window at lower storage cost.

Question 67: What does 'anti-passback' mean in an integrated access control and CCTV environment?

A method of encrypting access card data during wireless transmission
A technique for automatically detecting and flagging camera tampering attempts
A feature that prevents recorded video from being passed to unauthorized viewers
A rule that prevents the same credential from being used to enter an area twice without first exiting (Correct answer)

Correct answer: A rule that prevents the same credential from being used to enter an area twice without first exiting

Anti-passback prevents a credential from being used to enter a zone twice without a matching exit event first, reducing the risk of card sharing and tailgating by unauthorized individuals.

Question 68: What is the primary purpose of a UPS (Uninterruptible Power Supply) in a CCTV system?

To maintain system operation during power outages (Correct answer)
To distribute power evenly across all cameras
To regulate voltage spikes from lightning
To reduce power consumption of cameras

Correct answer: To maintain system operation during power outages

A UPS provides battery backup power to keep the CCTV system operational during electrical outages, ensuring continuous surveillance coverage.

Question 69: What is the purpose of pre-positioning (preset) functions on a PTZ camera?

To instantly return the camera to a predefined view at the push of a button (Correct answer)
To schedule the camera to record only during certain hours
To limit the camera's pan range for privacy compliance
To automatically track moving objects

Correct answer: To instantly return the camera to a predefined view at the push of a button

Presets allow operators to program and instantly recall specific pan, tilt, and zoom positions, enabling rapid response to calls for service at known locations.

Question 70: What is 'scheduled recording' in a DVR/NVR?

Recording that alternates between cameras on a schedule
Recording that is triggered only by audio events
Recording that archives footage to the cloud on a timer
Recording that runs only during user-defined time windows (Correct answer)

Correct answer: Recording that runs only during user-defined time windows

Scheduled recording allows administrators to define specific time periods during which the system will record, conserving storage outside those windows.

Question 71: What is 'continuous recording' mode in a DVR/NVR?

Recording around the clock regardless of activity (Correct answer)
Recording only when motion is detected
Recording in a loop that overwrites the oldest footage
Recording only during scheduled business hours

Correct answer: Recording around the clock regardless of activity

Continuous recording captures video 24 hours a day, 7 days a week without gaps.

Question 72: Which camera placement strategy is most effective for monitoring a long, narrow corridor?

Installing an overhead fisheye camera at the center
Using multiple pan-tilt cameras along the ceiling
Placing a camera at each end of the corridor aimed inward (Correct answer)
Mounting cameras on the side walls at mid-point

Correct answer: Placing a camera at each end of the corridor aimed inward

End-mounted cameras aimed down the length of a corridor capture the full length with maximum depth of field and clear facial images.

Question 73: What is a 'video balun' used for in CCTV installations?

Transmitting video over UTP (twisted pair) cable instead of coax (Correct answer)
Converting analog video to IP format
Converting between PAL and NTSC video formats
Amplifying weak video signals over long distances

Correct answer: Transmitting video over UTP (twisted pair) cable instead of coax

A video balun converts the unbalanced coaxial cable signal to a balanced signal suitable for transmission over UTP twisted-pair cable.

Question 74: What is the maximum recommended cable run length for an analog CCTV camera using RG-59 coax without amplification?

750 meters
100 meters
300 meters (Correct answer)
500 meters

Correct answer: 300 meters

RG-59 coaxial cable is typically recommended for runs up to 300 meters (approximately 1,000 feet) before signal degradation requires a video amplifier.

Question 75: Which of the following factors has the most significant impact on the network bandwidth required for an IP camera stream?

Camera's physical dimensions
Type of camera mount used
Resolution and frame rate (Correct answer)
Time of day

Correct answer: Resolution and frame rate

The resolution (e.g., 1080p, 4K) and frame rate (frames per second, FPS) are primary determinants of the amount of data generated by a camera. Higher resolution and higher frame rates create larger video files, which in turn require more network bandwidth to transmit the video stream effectively.

Question 76: What is the purpose of a CCTV system's 'watermarking' feature?

To add decorative borders to recorded footage
To embed hidden data into video to verify authenticity and detect tampering (Correct answer)
To reduce file size during export
To overlay weather information on outdoor camera feeds

Correct answer: To embed hidden data into video to verify authenticity and detect tampering

Digital watermarking embeds invisible metadata into video footage, allowing investigators to verify that the footage has not been altered or tampered with.

Question 77: In IP camera networking, what is a 'managed switch' primarily used for compared to an 'unmanaged switch'?

Managed switches eliminate the need for a router
Managed switches provide more PoE ports than unmanaged switches
Managed switches are always more cost-effective for small installations
Managed switches allow configuration of VLANs, QoS, and port mirroring (Correct answer)

Correct answer: Managed switches allow configuration of VLANs, QoS, and port mirroring

Managed switches offer advanced configuration options like VLANs, QoS prioritization, SNMP monitoring, and port mirroring that unmanaged switches lack.

Question 78: What is the primary function of a Network Video Recorder (NVR)?

Encode analog video signals to digital
Receive, decode, and store IP camera streams (Correct answer)
Translate ONVIF profiles to analog output
Provide PoE power to connected cameras

Correct answer: Receive, decode, and store IP camera streams

An NVR receives IP video streams over the network, decodes them, and stores the footage to disk.

Question 79: A network switch's PoE budget is 150W and each camera draws 15W. What is the maximum number of cameras it can power simultaneously?

15
5
8
10 (Correct answer)

Correct answer: 10

Dividing the total PoE budget (150W) by the per-camera draw (15W) gives a maximum of 10 cameras.

Question 80: What is 'substream' or 'secondary stream' functionality in an IP camera?

A backup stream sent to a secondary NVR
A lower-resolution stream used for live view while the main stream records (Correct answer)
A stream transmitted over a secondary network interface
An encrypted stream reserved for forensic use

Correct answer: A lower-resolution stream used for live view while the main stream records

Dual-streaming lets the camera send a lower-resolution substream for live monitoring while simultaneously recording the full-resolution main stream.

Question 81: A system designer needs to select a camera to provide evidential-quality video to identify a person's face at a distance of 10 meters. According to the DORI standard (IEC EN 62676-4), what is the minimum required pixel density for the 'Identification' level?

125 Pixels per Meter (PPM)
25 Pixels per Meter (PPM)
250 Pixels per Meter (PPM) (Correct answer)
62 Pixels per Meter (PPM)

Correct answer: 250 Pixels per Meter (PPM)

The DORI standard specifies different pixel densities for varying levels of detail. For 'Identification,' which enables the identity of an individual beyond a reasonable doubt, the standard requires a minimum of 250 Pixels per Meter (PPM).

Question 82: What is the recommended maximum cable run for Cat6 Ethernet in an IP camera installation without a repeater?

150 meters
300 meters
100 meters (Correct answer)
50 meters

Correct answer: 100 meters

IEEE 802.3 specifies a maximum segment length of 100 meters (328 feet) for Cat5e/Cat6 Ethernet.

Question 83: In CCTV power distribution, what does a 'multi-camera power supply' typically provide?

A single 12VDC output rated for one camera at a time
PoE injection for IP cameras over coaxial cable
AC power conversion from 240V to 12V for a single camera
Multiple individually fused outputs supplying power to several cameras from one unit (Correct answer)

Correct answer: Multiple individually fused outputs supplying power to several cameras from one unit

Multi-camera power supplies have multiple individually fused output channels, allowing one centralized unit to safely power many cameras simultaneously.

Question 84: What is the purpose of a video management system (VMS) in a CCTV installation?

To convert IP cameras to analog output
To adjust camera lens focus remotely
To boost analog video signal strength
To centrally manage recording, playback, and camera configuration (Correct answer)

Correct answer: To centrally manage recording, playback, and camera configuration

A VMS provides centralized software for managing camera feeds, recording schedules, playback, and system configuration.

Question 85: What redundancy measure is commonly designed into critical CCTV systems to prevent total recording loss during a power outage?

Backup VHS tapes stored offsite
Manual camera rotation by security guards
Dual coaxial cable runs per camera
Uninterruptible Power Supplies (UPS) and/or backup generators (Correct answer)

Correct answer: Uninterruptible Power Supplies (UPS) and/or backup generators

UPS units provide immediate battery backup during power interruptions, while generators ensure long-term operation, preventing gaps in critical surveillance recording.

Question 86: In a multi-camera CCTV system, what is a 'camera tour' or 'guard tour' feature used for?

Physically moving cameras along a track
Automatically cycling through a sequence of camera views on a monitor (Correct answer)
Calibrating camera focus automatically
Sending camera feeds to remote locations

Correct answer: Automatically cycling through a sequence of camera views on a monitor

A camera tour automatically rotates through selected camera views on a monitor at set intervals, helping operators monitor multiple areas without manual switching.

Question 87: What is the typical function of a video balun in CCTV systems?

To amplify video signals over fiber optic lines
To split one video signal into four outputs
To transmit video signals over twisted pair cable instead of coaxial cable (Correct answer)
To convert analog video to digital format

Correct answer: To transmit video signals over twisted pair cable instead of coaxial cable

A video balun converts the impedance of coaxial video to allow transmission over standard twisted pair (Cat5/Cat6) cable, enabling longer or more flexible cable runs.

Question 88: What distinguishes unicast streaming from multicast streaming in an IP camera system?

Unicast sends one stream per viewer; multicast sends one stream to multiple viewers simultaneously
Multicast uses TCP while unicast uses UDP
Both A and C are correct (Correct answer)
Unicast requires more bandwidth per stream than multicast when there are multiple viewers

Correct answer: Both A and C are correct

Unicast creates separate streams for each client, consuming more bandwidth as viewers increase, while multicast sends a single stream that multiple clients join.

Question 89: A site uses 802.3bt (PoE++) switches. What maximum power per port does this standard support?

90 W (Correct answer)
30 W
60 W
15.4 W

Correct answer: 90 W

IEEE 802.3bt (PoE++) supports up to 90 watts per port (Type 4), enabling high-power devices like PTZ cameras and access points.

Question 90: You are designing a video surveillance system for a small retail store with 8 cameras, each recording 1080p video (approximately 4 Mbps bitrate) continuously. The client requires a video retention period of 30 days. Which of the following is the closest estimate for the total required storage capacity?

10 Terabytes (Correct answer)
4 Terabytes
2 Terabytes
20 Terabytes

Correct answer: 10 Terabytes

To calculate the storage: (4 Mbps per camera * 8 cameras) = 32 Mbps total bitrate. Convert Mbps to GB per day: (32 Mbps / 8 bits/byte * 3600 seconds/hour * 24 hours/day) / 1000^3 bytes/GB ≈ 345.6 GB/day. For 30 days: 345.6 GB/day * 30 days ≈ 10,368 GB, which is approximately 10.4 TB. Therefore, 10 Terabytes is the closest and most appropriate estimate among the choices.

Question 91: What does 'variable bitrate' (VBR) recording mean in CCTV systems?

The frame rate changes based on motion
The camera alternates between two fixed bitrate settings
The bitrate adjusts based on scene complexity to optimize storage (Correct answer)
The resolution scales up during high-activity periods

Correct answer: The bitrate adjusts based on scene complexity to optimize storage

VBR dynamically adjusts the data rate — using more bits for complex scenes and fewer for static ones — to balance quality and storage efficiency.

Question 92: Which camera placement strategy is most effective for capturing usable facial identification footage at a building entrance?

Place the camera at ground level looking upward
Install the camera behind the subject looking outward
Position the camera at approximately face height angled slightly downward toward approaching subjects (Correct answer)
Mount the camera high and angled steeply downward

Correct answer: Position the camera at approximately face height angled slightly downward toward approaching subjects

Cameras positioned near face height and angled slightly downward capture the best facial detail as subjects approach an entrance.

Question 93: A camera is installed at a remote construction site with an unreliable and low-bandwidth internet connection. To ensure that high-quality video is always recorded even during network outages, which feature is most essential for the camera to have?

H.264 compression
Cloud storage integration
Wide Dynamic Range (WDR)
Edge storage capability (e.g., an SD card slot) (Correct answer)

Correct answer: Edge storage capability (e.g., an SD card slot)

Edge storage refers to recording video directly on the device itself, typically on an SD or microSD card. This is critical for locations with poor or intermittent network connectivity, as it allows the camera to record footage locally, preventing data loss during an outage. The footage can often be configured to sync with a central server once connectivity is restored.

Question 94: What type of cable is most commonly used for analog CCTV camera installations?

RS-485 twisted pair
Cat6 UTP
RG-59 coaxial cable (Correct answer)
Fiber optic

Correct answer: RG-59 coaxial cable

RG-59 coaxial cable is the industry standard for analog CCTV video signal transmission, providing shielding against electromagnetic interference.

Question 95: In H.264 video, what is an 'I-frame'?

A fully encoded reference frame containing complete image data (Correct answer)
An interpolated frame generated between two keyframes
An indexed frame used for fast seek operations only
An incomplete frame missing pixel data

Correct answer: A fully encoded reference frame containing complete image data

An I-frame (Intra-coded frame) is a self-contained full image that other frame types reference; it enables random-access playback.

Question 96: Which method allows an installer to discover ONVIF-compliant IP cameras on a local network without knowing their IP addresses?

DNS lookup
Ping broadcast
SNMP polling
WS-Discovery (Correct answer)

Correct answer: WS-Discovery

WS-Discovery is the ONVIF-specified mechanism that allows devices to announce themselves and be found on a local network.

Question 97: A CCTV system uses a 'quad processor.' What does this device do?

Processes video through four compression algorithms
Splits a monitor screen into four quadrants to display four cameras simultaneously (Correct answer)
Powers four cameras from a single power supply
Records video at four times the normal frame rate

Correct answer: Splits a monitor screen into four quadrants to display four cameras simultaneously

A quad processor divides a single monitor screen into four equal quadrants so that four camera feeds can be viewed simultaneously in real time.

Question 98: A security manager wants to significantly increase the video retention period for a 16-camera system without purchasing additional hard drives. The monitored areas are mostly inactive overnight. Which change in recording configuration would be most effective?

Increasing the video resolution from 1080p to 4K.
Increasing the frame rate from 15 fps to 30 fps.
Changing the compression from H.265 to H.264.
Switching from continuous recording to motion-based recording. (Correct answer)

Correct answer: Switching from continuous recording to motion-based recording.

Motion-based recording only saves video when activity is detected. For areas with long periods of inactivity, this drastically reduces the amount of data stored compared to continuous (24/7) recording, thereby extending the retention period on existing storage. The other options would all increase storage consumption.

Question 99: When designing a system to minimize storage consumption without sacrificing critical footage, which recording mode is most appropriate?

Motion-triggered recording (Correct answer)
Continuous 24/7 recording at maximum bitrate
Manual recording initiated by the operator
Scheduled recording during business hours only

Correct answer: Motion-triggered recording

Motion-triggered recording activates only when movement is detected, dramatically reducing storage use while preserving all relevant events.

Question 100: A technician is tasked with integrating several existing analog cameras into a new, network-based video management system (VMS). Which component is essential for this task?

A Digital Video Recorder (DVR)
A video encoder (Correct answer)
A network multiplexer
A PoE injector

Correct answer: A video encoder

A video encoder, also known as a video server, converts analog video signals from a CCTV camera into a digital format. This allows the digitized video stream to be transmitted over an IP network and integrated into a network-based system like a VMS.

CCTV Technician Certification Exam

The CCTV Technician Certification Exam assesses competency in surveillance system design, IP video networking, camera technology, video recording and storage, power and cabling infrastructure, video analytics, and security compliance standards.

100

Questions

120 min

Time Limit

70%

To Pass

Checking for saved progress...

Exam Rules

You can skip questions and return to them later
Flag questions for review before submitting
No feedback shown until you submit the entire exam
Unanswered questions count as wrong — answer everything
10 pretest questions are mixed in and don't affect your score
Timer auto-submits when time runs out
Your progress is auto-saved every 30 seconds