CVSS CVSS Camera Technology & Optics

Question 1

Which camera sensor type is generally preferred for low-light video surveillance applications?

Accepted Answer

CCD (Charge-Coupled Device)

Answer

CMOS (Complementary Metal-Oxide Semiconductor)

Answer

Infrared CMOS

Answer

Thermal CMOS

Question 2

What does the term 'depth of field' refer to in surveillance camera optics?

Accepted Answer

The range of distances within which objects appear acceptably sharp

Answer

The maximum focal length of the lens

Answer

The angle of view of the camera

Answer

The minimum illumination required by the sensor

Question 3

A varifocal lens on a surveillance camera allows an installer to:

Accepted Answer

Manually adjust the focal length to change the field of view

Answer

Automatically adjust zoom in response to motion

Answer

Electronically control iris opening

Answer

Switch between day and night modes

Question 4

What is the primary advantage of a wide dynamic range (WDR) camera in a surveillance system?

Accepted Answer

Ability to capture detail in both bright and dark areas simultaneously

Answer

Higher frame rates in dark environments

Answer

Extended IR illumination distance

Answer

Wider horizontal field of view

Question 5

When selecting a camera lens for license plate capture on a highway lane, which characteristic is most critical?

Accepted Answer

Long focal length for narrow field of view and subject magnification

Answer

Ultra-wide field of view (above 120°)

Answer

Fixed iris for consistent exposure

Answer

Fisheye distortion correction

Question 6

Which IP camera rating indicates the enclosure is dust-tight and protected against powerful water jets from any direction?

Accepted Answer

IP66

Answer

IP54

Answer

IP65

Answer

IP67