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
2
Q
which of the following projects a ray of light through a lens to display an image onto a surface?
A
projector
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
4
Q
Chroma Subsampling is a form of:
A
Compression
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
6
Q
Which of the following describes how often the display can redraw the screen to show a new image?
A
Refresh Rate
7
Q
Which of the following interfaces renders images as micro packets similar to network data?
A
Display Port
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
8
Q
Which of the following describes the relationship of width and height of an image?
A
Aspect Ration
9
Q
Which of the following measures an image’s width and height using pixels?
A
Resolution
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
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
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
11
Q
Interlaced scanning maybe desribed as:
A
Images drawn in two alternate fields as odd & even numbered lines.
12
Q
Which one of the following indicates the amount of data used per pixel to present color information?
A
Color Bit Depth
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)
13
Q
Which one of the following digital broadcast standards is adopted in Europe, Asia, and Africa?
A
DMB (digital video Broadcasting)
13
Q
Which one of the following indicates the amount of data used per pixel to present color information?
A
Color Bit Depth
14
Q
Which one of the following digital broadcast standards is adopted in Europe, Asia, and Africa?
A
DVB (digital video Broadcasting)
15
Q
DVI and HDMI both use a signaling method known as:
A
TMDS (Transmission-Minimized Differential Signaling)
16
Q
Which one of the following indicates the amount of data used per pixel to present color information?
A
Color Bit Depth
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
16
Q
Which of the following represents a logarithmic ratio to measure the change in sound intensity or electric signals?
A
Decibel (dB)
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
16
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?
Balanced Cables
16
which of the following is referred to as the safety zone that allows audio peaks to exceed the nominal level without clipping?
Headroom
16
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?
Ducking
16
which of the following is the last link of the audio signal path?
loud speaker
16
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?
1128 feet/second (343 meters/second)
17
The rate at which the sound vibrations repeat is called?
Frequency
18
which of the following is related to the amount of energy that a sound wave carries?
Amplitude
19
which of the following is a low voltage level that comes out of a microphone when someone speakes into it?
Mic Level
20
Which of the following has two conductor wires, one for the hot audio signal , and one for ground?
unbalanced cables
21
Which of the following carries two independent channels for left and right audio, and creates the impression of sound heard from various directions?
Stereo sound signals
22
When a microphone signal first enters a mixer, which of the following is used to control the input level of the audio?
Gain
23
Which of the following is designed to capture spoken words limited to the speaker, commonly found on podiums or in conference rooms and boardrooms?
Gooseneck microphone
24
An omni directional microphone pickup pattern has a coverage of:
360 degrees
25
Which of the following file types are part of the moving picture experts group 1, audio layer III encoding techniques?
MP3
26
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?
vpn
27
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?
AV LAN port
28
Which of the following is manually configured as a fixed address for a device, and does not change?
Static IP address
29
Which of the following can be used as an intermediate router for the subnet when an IP address is not within the network?
Default Gateway
30
Which of the following layers of the OSI model handles the error detection with CRC checksums and flow control of a local network?
Data link layer 2
31
Within the OSI model which layer allows for varying operating systems to communicate with each other on the network?
Presentation Layer 6
32
Which of the following relationships describes the basic networking operations of sending and receiving bidirectional data messages?
Client - Server
33
Which one of the following network topologies connects a central node to every device on the network, acting as a multiport repeater?
Star topology
34
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?
routers
35
WAN's cover wide geographical areas and are commonly used to link different locations together.
True
36
Which one of the following protocols is responsible for the actual delivery of data over a network?
TCP (transmission control protocol)
37
192.168.100.101 is an example of which type of address?
IP
38
Which one of the following types of IP address are automatically assigned to network devices using a DHCP server?
Dynamic IP address
39
Which one of the following OSI reference layers provides logical IP addressing for all devices that communicate over a network?
Network Layer 3
40
Which one of the following network topologies daisy-chains the devices to a common medium where information travels along a backbone?
Bus Topology
41
Category cable wire pairs are twisted together for which of the following purposes?
Cancel out EMI from external sources
42
which one of the following twisted pair wiring standards define the pinouts of a crossover cable connection?
T568A to T568B
43
When designing a network, which of the following is important to consider thought the design process?
All of the above - physical & logical device topology security & Quality implementation maintenance & expansion consideration.
44
Which one of the following uses one to one transmission from one point in the network to another?
unicast
45
which of the following is the amount of energy that a signal waveform carries, measured in volts?
amplitude
46
which of the following control methods is a wireless one-way interface designed to control a single device?
infrared
47
which of the following refers to any reduction in signal strength due to the natural consequences of transmission over long distances, sometimes called loss?
attenuation
48
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?
Plenum-rated
49
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)?
gain
50
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?
peaking
51
which of the following are signal amplifiers that drive video, computer graphics, and stereo audio over extended distances?
Line drivers
52
Which of the following represents a logarithmic ratio to measure the change in sound intensity or electric signals?
Decibel (dB)
52
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?
Matrix Switcher
52
Which of the following capabilities are provided by Extron matrix switchers?
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
Which of the following is transmitted as electrical impulses of encoded data?
signals
54
which of the following describes the distance of traveling energy, such as light or sound, in a repeating pattern?
wavelength
55
which of the following is an undesirable alteration in the original waveform of an audio or video signal?
distortion
56
which of the following can negatively affect system performance?
All of the above - long cable runs, low quality cables source devices with poor signal output
57
which of the following describes a devices limited range of frequencies in which it can successfully operate?
Bandwidth
58
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?
extenders
59
which of the following are helpful considerations when selecting any type of switcher?
all of the above - the number of inputs and outputs, the interface connector types the signal types
60
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?
True
61
which of the following describes signal processing?
All of the above - completely reformat a signal, amplifying or peaking a signal converting signals from one format to another
62
which of the following is the process of converting a video signal from one resolution to another?
Scaling
63
which of the following light sources have a low power output, and wide spectral width that radiates out in all directions, like a bulb?
LED
64
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?
Total Internal Reflection
65
Which of the following are the basic type of fiber?
singlemode and multimode
66
which of the following are protection methods for fiber optic cable?
Loose Tube and Tight Buffered
67
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?
Fiber to the X - FTTX
68
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?
Absorption
69
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?
scattering
70
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?
Attenuation
71
which one of the following is an advantage of using fiber optics over twisted pair copper wire?
All of the above - minimal data errors, immunity to electromagnetic interference - EMI longer Distance capability.
72
Which one of the following creates a permanent joint between the end of two fibers by mechanically joining them or fusing together with heat?
Splices
73
Which one of the following is the center part of the glass fiber that carries the light signals?
core
74
which one of the following surrounds the center part of the glass fiber to cause reflection, keeping the light traveling down the fiber?
cladding
75
which of the following is used in measuring the diameter of a fiber?
microns
76
fiber optic shards of class are extremely sharp and can easily penetrate skin?
true
77
which of the following is the delivery of content in real-time as events happen?
Live Content
78
which of the following streaming functions analyzes, de-compresses, and reconstructs the received packets, and delivers the signal to the end-point?
Decode
79
Which of the following types of compression refers to the loss of data when an approximations of the original image is reconstructed?
Lossy Compression
80
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?
Codec
81
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?
Latency
82
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?
Streaming
83
An acceptable view experience for consumer purposes may not meet the needs of professional applications.
True
84
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?
Decode
85
Which one of the following compression methods is referred to as Intra-Frame Compression?
Spatial Compression
86
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?
Internet Protocol - IP
87
which one of the following is in different geographical locations and provides communication to smaller networks using routers and switches?
Wide Area Network - WAN
88
Which one of the following is a set of rules, procedures, and formats, defined in seven levels, or layers?
OSI reference Model
89
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?
User Datagram Protocol - UDP
90
Which one of the following uses one-to-one transmission to deliver video from one point in the network to another?
unicast
91
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?
HTTP - hypertext transfer protocol
92
What is the comprised of the multiple small gauge wires that are twisted together to form a larger, single conductor?
Stranded core conductor
93
A cable with a thin layer of copper or aluminum wrapped completely around insulation of the inner core conductors is what type of shielding?
Foil Shield
94
Which of the following determines how much a cable can hold an electrical charge, expressed in picofarads
per foot (pF/ft)?
Capacitance
95
Adjacent wires within an improperly shielded cable may internally experience which of the following?
Crosstalk
96
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?
Balanced signal cables
97
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?
BNC
98
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?
USB
99
The maximum distance for HDBaseT systems from the transmitter to the receiver is ______.
330 feet / 100 meters
100
True or False: Special consideration must be taken when routing through building open areas where fire
resistance and rigorous safety standards are required.
True
101
Which of the following is a possible contributing factor to poor signal performance?
All of the above Ground loop Static discharge Interference from alien crosstalk
102
Which of the following core conductors is made of one single wire and generally provides excellent
conductivity?
Solid
103
Which of the following cable shielding methods has many fine strands of material woven together that
encompasses the insulation of the cable?
Braided Shield
104
Which of the following affects the impedance of a cable?
All of the above Resistance, Capacitance, Mismatches in the type of interface connectors, components, or
cables
105
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?
Attenuation
106
Which of the following does NOT contain additional shielding like meshes or aluminum foil?
Shielded Twisted Pair - STP
107
Which of the following contains a foil shielding, a wire braid mesh, or a combination of the two?
Shielded Twisted Pair - STP
108
Which of the following uses a standard RJ-45 modular connector for twisted pair cable?
HDBaseT
109
True or False: The Cable Cubby Series/2 enclosures do NOT accommodate Extron patented, variable-speed
cable retraction modules for AV cables
False
110
Which of the following are mountable metal plates that provide AV connectors for audio, video, phone, data,
power, and control?
AAPs and MAAPs
111
Which of the following is NOT a user interface?
Encoder
112
Which of the following is used to operate a control system?
User Interface
113
Which of the following has an easy-to-use button interface for handling simple AV functions over a standard
Ethernet network?
MediaLink Plus Series Controllers
114
The size of a touchpanel in an AV system is driven by:
All of the above
115
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?
Control Processor
116
Which of the following software is ideal for smaller applications requiring one control processor and one
control interface?
Global Configurator Plus
117
What type of control method is RS-232?
Serial
118
Which of the following is used for powering small, Ethernet devices over standard Category cabling?
POE (power over ethernet)
119
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?
Toolbelt
120
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?
GUI Designer
121
Which one of the following software tools is suited for configuring applications that require multiple control
processors, enhanced functionality, and advanced configuration?
Global Configurator Professional
122
Which one of the following is based on the Python programming language to define system functionality?
Global Scripter
123
Which one of the following is server-based software that provides a remote Help Desk for AV system
management, resource control, interaction, and notification?
GlobalViewer Enterprise
124
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?
Infrared
125
Which one of the following sends bidirectional control commands between the controller and a device over
the network?
Ethernet
126
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?
Consumer Electronics Control - CEC
127
During the control system design process, which of the following should be considered as part of the
infrastructure?
All of the above
