Exam Practice Questions And Correct
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Rationale 2026 Q&A| Instant Download
1. A technician is installing a CCTV system in a commercial facility where
the client requires continuous recording with minimal storage loss.
Which recording method best supports efficient long-term storage
while maintaining event detail?
A. Linear recording without compression
B. Motion-activated recording with H.265 compression
C. Analog tape recording with overwrite disabled
D. Manual recording triggered by operator only
Answer: B
Motion-activated recording reduces unnecessary footage storage
while H.265 compression significantly improves storage efficiency
without sacrificing video quality, making it ideal for long-term
surveillance retention.
2. When selecting coaxial cable for a high-resolution analog CCTV
system, which specification is most critical for maintaining signal
integrity over long distances?
A. High DC resistance
B. Low shielding effectiveness
C. 75-ohm impedance rating
D. High capacitance per foot
Answer: C
, A 75-ohm impedance rating ensures proper signal matching between
CCTV cameras and recording devices, minimizing signal reflection
and degradation over distance.
3. A CCTV installer notices image distortion caused by electromagnetic
interference near power lines. What is the most effective corrective
action?
A. Increase camera brightness settings
B. Replace DVR firmware
C. Use shielded twisted pair cabling with proper grounding
D. Reduce camera resolution
Answer: C
Shielded twisted pair cabling with correct grounding minimizes
electromagnetic interference, preserving image clarity in
environments with electrical noise.
4. Which type of camera is best suited for monitoring large outdoor
parking lots requiring wide coverage with minimal blind spots?
A. Fixed lens bullet camera
B. Pan-tilt-zoom (PTZ) camera
C. Pinhole camera
D. Thermal-only camera
Answer: B
PTZ cameras provide adjustable viewing angles and zoom
capabilities, allowing operators to cover large areas efficiently and
track activity dynamically.
5. During CCTV system design, what is the primary advantage of using IP-
based cameras over analog systems?
A. Lower installation flexibility
B. Reduced network dependency
C. Higher scalability and remote accessibility
D. Limited resolution capability
Answer: C
IP-based systems offer superior scalability, higher resolution options,
and remote access capabilities through network integration, making
them more versatile than analog systems.
, 6. A technician is configuring a DVR and needs to ensure accurate time
stamping of recorded footage. What is the most reliable method?
A. Manual clock adjustment daily
B. Syncing with a Network Time Protocol (NTP) server
C. Disabling time display overlays
D. Using battery-powered internal clock only
Answer: B
Synchronizing with an NTP server ensures accurate and consistent
time stamps across all recorded footage, which is critical for legal
and investigative purposes.
7. What is the primary function of infrared (IR) LEDs in CCTV cameras?
A. Increase frame rate
B. Enable color recording in darkness
C. Provide illumination for low-light or nighttime viewing
D. Reduce bandwidth usage
Answer: C
Infrared LEDs provide invisible light that allows cameras to capture
images in low-light or complete darkness, enhancing nighttime
surveillance capability.
8. Which networking device is essential for connecting multiple IP
cameras to a central recording system?
A. Analog modulator
B. Network switch
C. RF amplifier
D. Power inverter
Answer: B
A network switch enables multiple IP cameras to communicate
efficiently with a recording device by managing data traffic within
the surveillance network.
9. What is the main purpose of camera backlight compensation (BLC)?
A. Increase recording storage
B. Improve image clarity in high-contrast lighting
C. Reduce camera power consumption
D. Enhance infrared range
Answer: B