CSI Electronic Surveillance Systems 2

Question 1

Which camera technology provides the best image quality in near-total darkness without emitting visible light?

Accepted Answer

Thermal infrared cameras

Answer

Thermal infrared cameras detect heat signatures rather than visible light, providing imaging in complete darkness without any illumination.

Question 2

In CCTV surveillance, what does 'dwell time' refer to?

Accepted Answer

The time a PTZ camera remains on a preset position before cycling

Answer

Dwell time is the duration a pan-tilt-zoom camera pauses at each preset position during an auto-patrol sequence before moving to the next.

Question 3

An investigator notices a surveillance camera with a very narrow field of view but extreme detail at long range. This is most likely equipped with a:

Accepted Answer

Telephoto lens

Answer

Telephoto lenses have long focal lengths that magnify distant subjects while narrowing the field of view, ideal for long-range detail capture.

Question 4

What is the primary legal concern when conducting covert video surveillance in a workplace?

Accepted Answer

Employee expectation of privacy in certain areas

Answer

Employees retain an expectation of privacy in areas such as restrooms and locker rooms, and covert surveillance in these areas is illegal regardless of employer authorization.

Question 5

Which type of transmission is most susceptible to interception when used in a wireless surveillance system?

Accepted Answer

Unencrypted 2.4 GHz RF

Answer

Unencrypted 2.4 GHz RF transmissions can be intercepted with readily available equipment, making them the least secure transmission method listed.

(CSI) Certified Security Investigator Practice Test

(CSI) Certified Security Investigator Practice Test

CSI Electronic Surveillance Systems 2