Chapter 8 : VMS

Question 1

Video Surveillance three primary use:

Answer 1

Detect activities that call for security response
Collect images of an incident for later review and use as evidence
Assist with incident assessment

Question 2

The application ______ the implementation of the VSS, not the other away around.

Answer 2

Drives

Question 3

Three factors to consider when selecting fields of view

Answer 3

Target
Activity
Purpose

Question 4

The choice of camera is based on, in order

Answer 4

Sensitivity
Resolution
Features

Question 5

Three main components of analog VSS

Answer 5

camera
transmission cable
monitor

Question 6

The main components of digital VSS

Answer 6

Camera
Digital Signal Carrier
PC with software

Question 7

Fiber-optics cables are _________ by EMI or RFI

Answer 7

not affected

Question 8

The resolution of a camera is determine by

Answer 8

camera
transmission method
the weakest link in the video system interface
the reproductive capability of the image storage system

Question 9

________ is the minimum amount of light needed to produce a quality image.

Answer 9

sensitivity

Question 10

______ is the first consideration when choosing a camera.

Answer 10

lighting

Question 11

Unshielded twisted pair (UTP) networking cable max run is ____ before amplification is required.

Answer 11

328ft distance

Question 12

A system should allow for classification of a target ______ large at the _____ of the assessment zone.

Answer 12

1-foot large, far edge

Question 13

Maintenance considerations when designing the VSS.

Answer 13

Best performed by a competent, onsite staff member who understand the complexities and interrelationships of all the concepts used in the original system design and has a background in electronic system troubleshooting.

Question 14

Three theoretical identification view of an analog VSS

Answer 14

subject identification (should occupy 10-20% of the scene width
action identification
scene identification

Question 15

Camera Types

Answer 15

Standard Analog
IP
Megapixel
Infrared
Thermal
Day/Night

Question 16

Multiplexers cost resolution, losing up to ______ when encoding/de-encoding analog video

Answer 16

The25%

Question 17

Sloppy coax installation cost ______ resolution.

Answer 17

10%-15%

Question 18

What is the second most important decision after choosing the camera?

Answer 18

The lens

(bonus: the 3rd? making sure they are compatible

Question 19

Lens formats

Answer 19

1” camera = 25mm lens
1/2” camera = 12.5 mm lens
1/3” camera = 8mm lens

Question 20

What is the ONLY reason to cut down on the amount of bandwidth requirements of the network and the amount of storage space required?

Answer 20

Cost

Question 21

What are the two types of video analytics?

Answer 21

Preprogrammed and learned algorithm

Question 22

Intelligent video: Architecture can be either centralized or distributed. What are the differences?

Answer 22

Centralized - all intelligence resides in the recording server
Distributed - Intelligence is distributed to the edge and resides in the network camera or video encoder.

Question 23

VS monitoring by an operator is most effective during the first ______ minutes of watching a monitor.

Answer 23

20

Question 24

_____ is the most effective and fastest growing compression technology for transmission and storage.

Answer 24

H.264

Question 25

__________ is a circuit built into the camera to provide additional sensitivity and keep a level video signal as light decreases or in areas with shadows.

Answer 25

Automatic Gain Control (AGC)

Question 26

Digital video surveillance systems use a full grid of small, colored squares known as ____ and measures in _____, or _____, using the CIF resolution.

Answer 26

pixels, fps, ips

Question 27

The "f-stop" number refers to the ___ of the lens. The larger the number corresponds to a ______ amount of light being captured by lens. For low light conditions, a lower f-stop number is desired

Answer 27

Speed, lesser

Question 28

Depending on the budget allocation and needs, approximately ____% of spare parts should be kept on hand.

Answer 28

5%