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Additional Final Questions Flashcards

1
Q

The Human Eye can Differentiate individual picture frames at which of the following rates?

A

10-12 frames per second

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2
Q

which of the following projects a ray of light through a lens to display an image onto a surface?

A

projector

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3
Q

which of the following is the smallest component of a digital image, composed of individual Red, Green, and Blue - RGB color elements?

A

Pixel

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4
Q

Chroma Subsampling is a form of:

A

Compression

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5
Q

True or False: Progressive Scanning Draws each line sequentially from left to right, creating a full image frame in one pass from top to bottom.

A

True

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6
Q

Which of the following describes how often the display can redraw the screen to show a new image?

A

Refresh Rate

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7
Q

Which of the following interfaces renders images as micro packets similar to network data?

A

Display Port

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8
Q

Which of the following is used for connecting peripheral devices (keyboard, mouse) to computers, as well as for power to charge portable devices?

A

USB

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8
Q

Which of the following describes the relationship of width and height of an image?

A

Aspect Ration

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9
Q

Which of the following measures an image’s width and height using pixels?

A

Resolution

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9
Q

Which one of the following consists of thin organic layers between two conductors (transparent anode and metallic cathode) that convert electric current into light?

A

OLED

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10
Q

Which one of the following is a reflective surface made up of thousands of tiny mirrors, each representing a single pixel?

A

DLP

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11
Q

Which one of the following is the smallest component of a screen image, composed of individual Red, Green, and Blue - RGB primary colors?

A

Pixels

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11
Q

Interlaced scanning maybe desribed as:

A

Images drawn in two alternate fields as odd & even numbered lines.

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12
Q

Which one of the following indicates the amount of data used per pixel to present color information?

A

Color Bit Depth

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12
Q

Which one of the following is a digital transmission interface for uncompressed video, multi-channel audio, and control data that also supports high-bandwidth digital content protection - HDCP?

A

HDMI - (High Definition Multimedia Interface)

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13
Q

Which one of the following digital broadcast standards is adopted in Europe, Asia, and Africa?

A

DMB (digital video Broadcasting)

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13
Q

Which one of the following indicates the amount of data used per pixel to present color information?

A

Color Bit Depth

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14
Q

Which one of the following digital broadcast standards is adopted in Europe, Asia, and Africa?

A

DVB (digital video Broadcasting)

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15
Q

DVI and HDMI both use a signaling method known as:

A

TMDS (Transmission-Minimized Differential Signaling)

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16
Q

Which one of the following indicates the amount of data used per pixel to present color information?

A

Color Bit Depth

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16
Q

Which of the following defines the science or study of sound, how its created, its ability to travel within a space, and the way its managed?

A

Acoustics

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16
Q

Which of the following represents a logarithmic ratio to measure the change in sound intensity or electric signals?

A

Decibel (dB)

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16
Q

Which of the following performs as a transducer, converting one form of energy to another, and is classified based on how it captures sound?

A

Microphone

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16
Q

Which of the following has a ground wire, and carries analog signals as one hot wire and one cold wire in reverse polarity to cancel noise and interference?

A

Balanced Cables

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16
Q

which of the following is referred to as the safety zone that allows audio peaks to exceed the nominal level without clipping?

A

Headroom

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16
Q

Which of the following is an example of dropping the sound levels for background music, to focus the audio on an important voice-over announcement?

A

Ducking

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16
Q

which of the following is the last link of the audio signal path?

A

loud speaker

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16
Q

which of the following is the average rate of speed at which sound travels through air, measured at sea level and 70 F/20C degrees?

A

1128 feet/second (343 meters/second)

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17
Q

The rate at which the sound vibrations repeat is called?

A

Frequency

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18
Q

which of the following is related to the amount of energy that a sound wave carries?

A

Amplitude

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19
Q

which of the following is a low voltage level that comes out of a microphone when someone speakes into it?

A

Mic Level

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20
Q

Which of the following has two conductor wires, one for the hot audio signal , and one for ground?

A

unbalanced cables

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21
Q

Which of the following carries two independent channels for left and right audio, and creates the impression of sound heard from various directions?

A

Stereo sound signals

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22
Q

When a microphone signal first enters a mixer, which of the following is used to control the input level of the audio?

A

Gain

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23
Q

Which of the following is designed to capture spoken words limited to the speaker, commonly found on podiums or in conference rooms and boardrooms?

A

Gooseneck microphone

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24
Q

An omni directional microphone pickup pattern has a coverage of:

A

360 degrees

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25
Q

Which of the following file types are part of the moving picture experts group 1, audio layer III encoding techniques?

A

MP3

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26
Q

Which of the following allows its users on a less secure network to send and receive data through a safe connection by extending a private network across the internet?

A

vpn

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27
Q

Which of the following can be found in various Extron Pro Series control processors for communication to external supported devices, such as touch link pro touchpanels and user interfaces?

A

AV LAN port

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28
Q

Which of the following is manually configured as a fixed address for a device, and does not change?

A

Static IP address

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29
Q

Which of the following can be used as an intermediate router for the subnet when an IP address is not within the network?

A

Default Gateway

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30
Q

Which of the following layers of the OSI model handles the error detection with CRC checksums and flow control of a local network?

A

Data link layer 2

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31
Q

Within the OSI model which layer allows for varying operating systems to communicate with each other on the network?

A

Presentation Layer 6

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32
Q

Which of the following relationships describes the basic networking operations of sending and receiving bidirectional data messages?

A

Client - Server

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33
Q

Which one of the following network topologies connects a central node to every device on the network, acting as a multiport repeater?

A

Star topology

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34
Q

Which one of the following supports communication between subnets and across different networks, by determining the next network point to which a packet is forwarded as its destination?

A

routers

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35
Q

WAN’s cover wide geographical areas and are commonly used to link different locations together.

A

True

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36
Q

Which one of the following protocols is responsible for the actual delivery of data over a network?

A

TCP (transmission control protocol)

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37
Q

192.168.100.101 is an example of which type of address?

A

IP

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38
Q

Which one of the following types of IP address are automatically assigned to network devices using a DHCP server?

A

Dynamic IP address

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39
Q

Which one of the following OSI reference layers provides logical IP addressing for all devices that communicate over a network?

A

Network Layer 3

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40
Q

Which one of the following network topologies daisy-chains the devices to a common medium where information travels along a backbone?

A

Bus Topology

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41
Q

Category cable wire pairs are twisted together for which of the following purposes?

A

Cancel out EMI from external sources

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42
Q

which one of the following twisted pair wiring standards define the pinouts of a crossover cable connection?

A

T568A to T568B

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43
Q

When designing a network, which of the following is important to consider thought the design process?

A

All of the above - physical & logical device topology security & Quality implementation maintenance & expansion consideration.

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44
Q

Which one of the following uses one to one transmission from one point in the network to another?

45
Q

which of the following is the amount of energy that a signal waveform carries, measured in volts?

46
Q

which of the following control methods is a wireless one-way interface designed to control a single device?

47
Q

which of the following refers to any reduction in signal strength due to the natural consequences of transmission over long distances, sometimes called loss?

A

attenuation

48
Q

which of the following cables and devices have special flame-resistant materials that are designed to meet safety test standards for resistance to smoke, fire, and heat above the ceiling or in the other environment air spaces?

A

Plenum-rated

49
Q

Which of the following is used to increase the voltage (amplitude) level of an analog signal at the beginning of a long cable run and is measured in decibels (db)?

50
Q

which of the following is used to compensate for the lack of analog bandwidth response in displays, monitors, and projectors, and also the frequency roll-off caused by long cable runs?

51
Q

which of the following are signal amplifiers that drive video, computer graphics, and stereo audio over extended distances?

A

Line drivers

52
Q

Which of the following represents a logarithmic ratio to measure the change in sound intensity or electric signals?

A

Decibel (dB)

52
Q

which of the following is in a single enclosure with multiple inputs and outputs, that combines the capabilities of a standard switcher with a distribution amplifier?

A

Matrix Switcher

52
Q

Which of the following capabilities are provided by Extron matrix switchers?

A

All of the above - source selection for each input and output status LED’s that indicate the current switching & source status IR and RS-232 signal support

53
Q

Which of the following is transmitted as electrical impulses of encoded data?

54
Q

which of the following describes the distance of traveling energy, such as light or sound, in a repeating pattern?

A

wavelength

55
Q

which of the following is an undesirable alteration in the original waveform of an audio or video signal?

A

distortion

56
Q

which of the following can negatively affect system performance?

A

All of the above - long cable runs, low quality cables source devices with poor signal output

57
Q

which of the following describes a devices limited range of frequencies in which it can successfully operate?

58
Q

Which of the following work as transmitter and receiver pairs to facilitate digital signal transmission over long distances via shielded or unshielded twisted pair, or fiber optic cable?

59
Q

which of the following are helpful considerations when selecting any type of switcher?

A

all of the above - the number of inputs and outputs, the interface connector types the signal types

60
Q

True or false: A single matrix switcher can be used to drive a divisible classroom and operate the space as an independent room or combine it into a single large presentation space?

61
Q

which of the following describes signal processing?

A

All of the above - completely reformat a signal, amplifying or peaking a signal converting signals from one format to another

62
Q

which of the following is the process of converting a video signal from one resolution to another?

63
Q

which of the following light sources have a low power output, and wide spectral width that radiates out in all directions, like a bulb?

64
Q

When the angle at which light strikes the cladding is low enough, what occurs when all of the light is reflected back into the core?

A

Total Internal Reflection

65
Q

Which of the following are the basic type of fiber?

A

singlemode and multimode

66
Q

which of the following are protection methods for fiber optic cable?

A

Loose Tube and Tight Buffered

67
Q

which of the following is a collective term for bringing all possible fiber topologies from the telecom or cable carrier to its customers, based on location of the termination point?

A

Fiber to the X - FTTX

68
Q

Which of the following is caused when a light wave of a giving frequency strikes a material with a molecular structure of the same frequency, converting light energy into heat as it interacts with the material?

A

Absorption

69
Q

which one of the following is caused when a light signal collides with a very small particle or impurity in the glass, knocking it off course in all directions?

A

scattering

70
Q

which one of the following is a loss of signal power over the length of the cable, due to the quality of the glass, absorption, scattering, or excessive bending within the fiber?

A

Attenuation

71
Q

which one of the following is an advantage of using fiber optics over twisted pair copper wire?

A

All of the above - minimal data errors, immunity to electromagnetic interference - EMI longer Distance capability.

72
Q

Which one of the following creates a permanent joint between the end of two fibers by mechanically joining them or fusing together with heat?

73
Q

Which one of the following is the center part of the glass fiber that carries the light signals?

74
Q

which one of the following surrounds the center part of the glass fiber to cause reflection, keeping the light traveling down the fiber?

75
Q

which of the following is used in measuring the diameter of a fiber?

76
Q

fiber optic shards of class are extremely sharp and can easily penetrate skin?

77
Q

which of the following is the delivery of content in real-time as events happen?

A

Live Content

78
Q

which of the following streaming functions analyzes, de-compresses, and reconstructs the received packets, and delivers the signal to the end-point?

79
Q

Which of the following types of compression refers to the loss of data when an approximations of the original image is reconstructed?

A

Lossy Compression

80
Q

Which of the following is a device is a device or program with technologies that compresses a signal for more efficient transmission, then decompresses it for viewing or editing?

81
Q

Which of the following describes the amount of delay, or the time it takes for video and audio to be delivered from the source to the destination?

82
Q

Which one of the following is a method of transporting media content over a network as a steady, continuous flow, allowing playback to proceed while subsequent data is received?

83
Q

An acceptable view experience for consumer purposes may not meet the needs of professional applications.

84
Q

which one of the following works to reverse the first two phases of the streaming process, reconstruct the signal and deliver it to the end-point?

85
Q

Which one of the following compression methods is referred to as Intra-Frame Compression?

A

Spatial Compression

86
Q

Which one of the following defines addressing methods and structures for datagram encapsulation that allows the delivery of packets from a source to a destination?

A

Internet Protocol - IP

87
Q

which one of the following is in different geographical locations and provides communication to smaller networks using routers and switches?

A

Wide Area Network - WAN

88
Q

Which one of the following is a set of rules, procedures, and formats, defined in seven levels, or layers?

A

OSI reference Model

89
Q

which one of the following connectionless protocol used in real-time streaming applications where best effort delivery is acceptable and the network devices and applications manage data flow control and errors?

A

User Datagram Protocol - UDP

90
Q

Which one of the following uses one-to-one transmission to deliver video from one point in the network to another?

91
Q

Which one of the following is a the set of rules for transferring text, graphic images, sound, video, and other multimedia files on the world wide web?

A

HTTP - hypertext transfer protocol

92
Q

What is the comprised of the multiple small gauge wires that are twisted together to form a larger, single conductor?

A

Stranded core conductor

93
Q

A cable with a thin layer of copper or aluminum wrapped completely around insulation of the inner core conductors is what type of shielding?

A

Foil Shield

94
Q

Which of the following determines how much a cable can hold an electrical charge, expressed in picofarads
per foot (pF/ft)?

A

Capacitance

95
Q

Adjacent wires within an improperly shielded cable may internally experience which of the following?

96
Q

Which of the following contains one hot wire for the analog audio signal, one cold wire for the audio signal in
the opposite, or reverse polarity, and a third wire for the ground shield?

A

Balanced signal cables

97
Q

Which of the following uses a twist connection with a bayonet lock that provides a tight connection and a
suitable bandwidth for high resolution signals over coaxial cable?

98
Q

Which of the following is a multipurpose interface for connecting peripheral devices such as a mouse,
keyboard, printer, scanner, or flash drive to a computer for communication?

99
Q

The maximum distance for HDBaseT systems from the transmitter to the receiver is ______.

A

330 feet / 100 meters

100
Q

True or False: Special consideration must be taken when routing through building open areas where fire
resistance and rigorous safety standards are required.

101
Q

Which of the following is a possible contributing factor to poor signal performance?

A

All of the above Ground loop Static discharge Interference from alien crosstalk

102
Q

Which of the following core conductors is made of one single wire and generally provides excellent
conductivity?

103
Q

Which of the following cable shielding methods has many fine strands of material woven together that
encompasses the insulation of the cable?

A

Braided Shield

104
Q

Which of the following affects the impedance of a cable?

A

All of the above Resistance, Capacitance, Mismatches in the type of interface connectors, components, or
cables

105
Q

Which of the following is a measurement, in decibels (dB), of the amount of any reduction in signal strength,
or loss, due to the natural consequence of transmission over long distance?

A

Attenuation

106
Q

Which of the following does NOT contain additional shielding like meshes or aluminum foil?

A

Shielded Twisted Pair - STP

107
Q

Which of the following contains a foil shielding, a wire braid mesh, or a combination of the two?

A

Shielded Twisted Pair - STP

108
Q

Which of the following uses a standard RJ-45 modular connector for twisted pair cable?

109
Q

True or False: The Cable Cubby Series/2 enclosures do NOT accommodate Extron patented, variable-speed
cable retraction modules for AV cables

110
Q

Which of the following are mountable metal plates that provide AV connectors for audio, video, phone, data,
power, and control?

A

AAPs and MAAPs

111
Q

Which of the following is NOT a user interface?

112
Q

Which of the following is used to operate a control system?

A

User Interface

113
Q

Which of the following has an easy-to-use button interface for handling simple AV functions over a standard
Ethernet network?

A

MediaLink Plus Series Controllers

114
Q

The size of a touchpanel in an AV system is driven by:

A

All of the above

115
Q

Which of the following is considered the brains of a control system that facilitates the delivery of commands
and the receiving of feedback from AV devices?

A

Control Processor

116
Q

Which of the following software is ideal for smaller applications requiring one control processor and one
control interface?

A

Global Configurator Plus

117
Q

What type of control method is RS-232?

118
Q

Which of the following is used for powering small, Ethernet devices over standard Category cabling?

A

POE (power over ethernet)

119
Q

Which of the following allows a user to change device network settings, add email servers, upload firmware,
remotely reboot Pro Series control products, and troubleshoot from a single application?

120
Q

Which one of the following is available with ready-to-use design templates and resource kits, or has the
option to build a user interface layout starting from scratch?

A

GUI Designer

121
Q

Which one of the following software tools is suited for configuring applications that require multiple control
processors, enhanced functionality, and advanced configuration?

A

Global Configurator Professional

122
Q

Which one of the following is based on the Python programming language to define system functionality?

A

Global Scripter

123
Q

Which one of the following is server-based software that provides a remote Help Desk for AV system
management, resource control, interaction, and notification?

A

GlobalViewer Enterprise

124
Q

Which one of the following control methods uses a wireless one-way interface to control a single AV device,
instead of an entire AV system?

125
Q

Which one of the following sends bidirectional control commands between the controller and a device over
the network?

126
Q

Which one of the following is a function of HDMI that allows one AV device to control another if they are
connected via HDMI cables?

A

Consumer Electronics Control - CEC

127
Q

During the control system design process, which of the following should be considered as part of the
infrastructure?

A

All of the above

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