IVN L3
A point of sale system with integrated video can aid in achieving which of the following?
-Awareness of how and when mistakes are made -Preventative negative behavior among coworkers -Reduction of internal and external shrinkage
A hosted video solution should meet which of the following security standards?
-Camera-owner authentication -Encryption of all streams -Encryption of passwords
Which of the following is a main stakeholder of hosted video systems?
-Installer -Video hosting provider -Video service subscriber
What percentage of retail store CCTV footage is actually watched?
1%
The IPv6 addressing platform uses what type of addressing format?
128-bit addressing with 8 groups of 4 hexadecimal digits
What is the typical retention of surveillance video?
7 - 30 days
When it is important to be able to identify a person from a video image, what is the minimum resolution required in pixels per foot?
80
Intelligent video algorithms have progressed to the point that _____ accuracy is generally achievable for modern video systems.
90%
Network video is a series of decisions balancing what four items?
Resolution, compression, frame rate, and the number of cameras
Which factors affect the amount of storage needed for a network video system?
Resolution, frame rate, retention, and file standard
Which SD card format has the highest potential storage capacity?
SDXC
Video motion detection was originally developed to accomplish what function?
Save video storage space by not recording an unchanging video image
What are the three usage groups that intelligent video applications are divided into?
Security, business intelligence and operations, and hybrid
Which communications protocol allows higher speed transfers and up to 128 direct connections?
Serial attached SCSI
What are the three types of platforms for video management systems?
Server, edge, and cloud-based video management
Server-based centralized systems have certain drawbacks. What are they?
They are required to perform the bulk of the processing, which limits the number of cameras.
Camera domes come in different versions. What are the advantages and disadvantages of using a mirrored dome?
They make it hard to see where the camera is aimed, but reduce the light reaching the lens.
What is the function of edge storage (for example, SD card) in a server-based video management system?
To act as backup storage in the event of a network or storage failure
What is the function of camera tampering detection?
To detect that the scene viewed by the camera has changed
Scalability is normally a function of hardware and bandwidth rather than software.
True
Solid state drives are without moving parts or disks, but are considerably more expensive per gigabit of storage than traditional mechanical disks.
True
To save energy, a VMD can be used to trigger lighting and heating systems to turn off when motion is not detected in a room.
True
Video surveillance systems for public events must be deployed quickly, be easily accessible, and provide the ability to manage video in a scalable, secure, and easy way for a short time.
True
What types of cabling will fulfill the FCC requirements for emission?
UTP for Class A and STP for Class B, STP shall be used for all demanding environments.
When making calculations on storage requirements for an intelligent network camera system, how does using H.264 affect the storage requirement as opposed to using motion JPG?
Using H.264 saves 30% on storage space over motion JPEG.
Which of these scenarios would put the greatest strain on the network video system's central processor?
Using software-based VMD to control all of the recordings of network cameras
What is the difference between processors used on desktop computers and servers used for networked video?
Video servers use multiple processors to deal with large amounts of data.
When using a camera for people counting, where should the camera be placed?
Directly above the traffic flow with a view of the entire width of the entrance
Which of the following explains how edge-based event handling works?
A low-res camera detects an event in the frame and triggers a second PTZ to zoom in on the area.
What is iSCSI?
A network protocol that allows sending SCSI commands over a TCP/IP network.
Which surveillance monitoring level would normally be applied to banks?
Active
How is dynamic range controlled when mounting cameras outdoors?
Aim the camera at the scene from a higher angle to reduce the amount of sky in the image
What is one advantage of using the video management software provided with the network camera or encoder?
All of the built-in features of the cameras associated with the software can be used.
What is the function of intrusion detection?
Allow movement from the intrusion zone into the warning zone and back to the intrusion zone
What is the effect of analytics on the time it takes to search through video files to find an incident?
Analytics can search months of video data in seconds.
Aspect ratio compensation refers to what ability of analytics?
Being able to identify an object that is not moving in an expected orientation
When adding light to improve the image quality, what position should the light have in relation to the camera for an indoor scene?
Beside the camera or at the same angle of the camera to the scene to deal with shadows
What is the benefit of video analytics to the operator of a video surveillance system?
Better chances of detecting unwanted activity on the protected property
Using the network video system to count how many people enter a store each day is an example of what?
Business intelligence
How can the VMS system interface with the PAC system?
By integrating a door controller to trigger a camera to record the event
In Europe, electronic, emission, and immunity have separate standards. What standard covers emission requirements in the U.S.?
CFR 47 Title 47 Part 15
For installations planning on gigabit connectivity, the text recommends using what type of cabling?
Cat-6 minimum
What are the two types of architecture used for analytics-based systems?
Centralized and distributed architecture
What type of network video surveillance system would be expected in a department store with 30 cameras?
Client server
What does video analytics attempt to do for the operator?
Convert audio and video into data that can be analyzed and acted upon
What are the issues with video image quality?
Correct lighting level, camera position, and uncompressed video
How can cameras be used to prevent tailgating at an entrance to a secure area?
Count the number of people entering on each credential swipe.
How can network video system storage requirements be reduced?
Decrease the retention
What do cameras used for fire and smoke detection do to analyze and detect an event?
Detect the color, light, and typical motion for a fire or smoke
What are the three steps that analytics go through for object classification?
Detection, segmentation, and classification
What is the analytic called queue management used to analyze?
Determine how many people are waiting to check out
_____ architecture saves bandwidth because the cameras decide what to send.
Distributed
A product with an environmental rating of IP66 is protected from what?
Dust tight and powerful water jets
What technology did loitering detection evolve from?
Dwell time used in business intelligence used to watch traffic patterns in stores
What type of video storage is preferred for a local fast food restaurant with multiple locations?
Hosted video with off-site recording
Applications in which video storage is available within the camera itself are called _____.
Edge
Using a door contact to trigger a camera is an example of what network technology?
Edge-based event management
HTTPS performs what function for network video systems?
Encryption for secure communication
Due to security concerns, Apple OS is used on all video network hardware.
False
License plate recognition will not work with script characters like Arabic.
False
Cameras mounted outside should be in a housing that meets what standards?
IP66, NEMA Type 4X
Name three of the steps required for license plate recognition to identify a specific plate.
Find the car, isolate the plate, and extract the characters.
What are the advantages of using Gatekeeper versus a fixed camera to monitor an entrance?
Gatekeeper can zoom in to identify individuals and track them after they enter.
Which of the following compression types has the highest compression and the lowest bandwidth requirements?
H.265
Which surveillance monitoring level would normally be applied to prisons?
High security
What is the advantage to using intelligent edge devices?
Higher accuracy, lower bandwidth required, and fewer servers needed
What is a major obstacle that facial recognition faces?
Identification is difficult if the image is not of sufficient quality.
Video motion detection can usually be tuned for which of the following parameters?
Ignore filters, object size filters, and lingering times
If the goal is to provide the proper amount of illumination without alerting people to the use of cameras in the area, what kind of illumination can be used?
Infrared illuminators
Where are SD cards used for video storage?
Inserted directly into the camera or encoder
Hardware used in network video platforms relies on whose processors?
Intel and AMD
How does analytics assist emergency agencies and traffic control offices?
It can detect slow moving or stopped vehicles and alert responders automatically
What is the function of a server cluster?
It provides redundancy and failover protection in the event of a server failure.
When the camera housing is classified as explosion-proof what does that mean?
It will contain any explosion within the enclosure and not ignite the atmosphere outside.
Spherical domes have solved the problem of _____ by maintaining a consistent distance between the camera block and the dome surface.
L-value
What application would be useful for identifying cars abandoned in a parking structure?
LPR
What effect does video analytics have on the required bandwidth for a system?
Large effect, the video content is reduced and combined with a small stream of data
What is the tradeoff for using tamper resistant screws over regular screws for vandal resistance?
Maintenance is more difficult because special tools are required.
What are the goals of vandal protection for cameras?
Make it difficult, create uncertainty, prolong and delay, and detect and send alarms
Crossline detection is designed to do what?
Monitor a virtual line drawn on a scene and alert whenever it is crossed
How does object left behind function?
Monitors the view and alerts when a moving object becomes stationary
What is the difference between network attached storage (NAS) and storage area network (SAN)?
NAS stores the entire file in one location, while SAN stores blocks of the file in many locations.
What is the major difference between the NEMA and UL standards for enclosures?
NEMA allows self-certification and UL requires third party testing.
Using local network storage, as well as cloud-based video storage, is an example of _____.
On-site redundancy
Give two examples of object-based analytics.
People counting and advanced motion detection
Basic VMD and camera tampering are two uses of what intelligent video application?
Pixel-based
What are the three technology groups that intelligent video applications are divided into?
Pixel-based, object-based, and specialized
Antiligature cameras are designed for what applications?
Prisons and mental institutions
How does Moore's Law apply to the network video market?
Processor chip performance doubles every 18 months at the same cost.
Which RAID level is called "Striping?"
RAID-0
Which RAID level is called "Disk Mirroring?"
RAID-1
Which RAID level requires three or more disks?
RAID-5
What is the advantage of using a RAID system for data/video storage?
Redundancy
What type of intelligent video application is used to record license plate numbers?
Specialized
What is the benefit of analytics to a retail store for shopper tracking?
Store management can determine the parts of the store attracting the most shoppers.
Which of the following software is used to organize video recordings?
Structured Query Language or Oracle
Using the network video system to verify that a fire exists on a property after the alarm has sounded is an example of _____.
System integration
All cabling installed for an intelligent network camera system should be tested and certified to meet standards set by _____.
TIA and ISO
Intelligent video was originally developed by what group?
The U.S. Military for use in battlefield analysis
What is the advantage of using a parapet mount over a regular wall mount?
The parapet mount can be swung to move the camera to perform maintenance.
What are the problems of using a pole mounted camera?
The pole, mount, and camera must take image stability into consideration.
Why is tape backup seldom used for backing up video material?
The slow write speeds are not compatible for network video.
Who is responsible for running the actual system that connects and manages all of the cameras and the video stored in the hosted video system?
The video hosting provider
When using a cloud-based system, who monitors the video?
The video service provider will provide monitoring as part of the package price.
What is the advantage of using a DVR with analytics?
There is no advantage; because of the processor power required, camera count is limited.
Which camera type can be used in complete darkness?
Thermal
Can a small business with analog cameras use a cloud-based system?
Yes, encoders can be used with a network switch or router
When using an off-site storage solution, is it possible to monitor the video locally?
Yes, using a local computer, tablet, or hand-held device
The test device used to test the camera's ability to display a moving object is _____.
a spinning rotakin
A(n) _____ enables the development of customized applications.
application programming interface (API)
Video management security software is used to _____.
authorize users, set passwords, set user access levels, and allow access to different devices
Analytics come in two types, _____ and _____.
built-in / plug-in
The hard drives used for network video systems are designed for _____.
constant write operations, power management, and to withstand temperature extremes
The largest use of processor power is during _____.
decoding and video analytics
PC server platforms are _____.
easily scalable using additional software licenses
The issue of rain drops distorting the image on a PTZ camera was solved by _____.
having the camera turn rapidly back and forth, shaking the water off
The cost-saving benefits of using edge-based analytics are _____.
higher accuracy, fewer servers, less bandwidth needed to process video
Continuous recording network video systems _____.
last for longer periods and user more disk space
Software that is used to set IP addresses, configure devices, and manage firmware upgrades is called _____ software.
management
Distributed systems overcome the limitations of centralized systems by _____.
moving the analytics to the cameras and encoders, which reduces bandwidth and processing
In order for cameras, software, and analytics to be commercially attractive they _____.
must be easy to use and build on open application program interfaces
The licensing of video systems is normally done _____.
on a per camera basis
Distributed analytic systems can reduce the bandwidth required for the system by _____.
only sending video when motion is detected by the camera or encoder
Using edge-based analytics with a camera used in a people counting application would _____.
require that only analytics are sent reducing the bandwidth required
Multistreaming allows the VMS system to _____.
send the same video with different resolution and frame rates to different clients
Adjust the exposure time to better capture a specific image by using _____.
shorter exposure times to reduce blurred images
The difference between a P-Iris and an Auto Iris is _____.
the P-Iris uses software to limit the iris from closing too far, reducing diffusion
The term accuracy refers to the ability of a system to _____.
use analytics to accurately detect the events it is programed to find
The advantage of using distributed analytics to the server is that the servers _____.
use less processing power and can serve more cameras
