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EXTRON AV ASSOCIATE CERTIFICATION EXAM AND STUDY GUIDE
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EXTRON AV ASSOCIATE CERTIFICATION EXAM AND STUDY GUIDE
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EXTRON AV ASSOCIATE CERTIFICATION EXAM ANDSTUDY GUIDE
The human eye can differentiate individual picture frames at which of the following
rates? - ANSWER: 10-12 frames per second
Which of the following projects a ray of light through a lens to display an image onto
a surface? - ANSWER: Projector
Which of the following is the smallest component of a digital image, composed of
individual Red, Green, and Blue - RGB color elements? - ANSWER: Pixel
Chroma Subsampling is a form of: - ANSWER: Compression
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. - ANSWER: True
Which of the following describes how often the display can redraw the screen to
show a new image? - ANSWER: Refresh Rate
Which of the following interfaces renders images as micro packets similar to network
data? - ANSWER: DisplayPort
Which of the following is used for connecting peripheral devices (keyboard, mouse)
to computers, as well as for power to charge portable devices? - ANSWER: USB
Which one of the following describes the relationship of width and height of an
image? - ANSWER: Aspect Ratio
Which one of the following measures an image's width and height using pixels? -
ANSWER: Resolution
Which one of the following consists of thin organic layers between two conductors
(transparent anode and metallic cathode) that convert electric current into light? -
ANSWER: OLED
Which one of the following is a reflective surface made up of thousands of tiny
mirrors, each representing a single pixel? - ANSWER: DLP
Which one of the following is the smallest component of a screen image, composed
of individual Red, Green, and Blue - RGB primary colors? - ANSWER: Pixels
Interlaced scanning may be described as: - ANSWER: Images drawn in two alternate
fields as odd & even numbered lines
, Which one of the following indicates the amount of data used per pixel to present
color information? - ANSWER: Color Bit Depth
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? - ANSWER: HDMI (High Definition Multimedia
Interface)
Which one of the following digital broadcast standards is adopted in Europe, Asia,
and Africa? - ANSWER: DVB (Digital Video Broadcasting)
DVI and HDMI both use a signaling method known as: - ANSWER: TMDS
(Transmission-Minimized Differential Signaling)
Which of the following defines the science or study of sound, how it's created, its
ability to travel within a space, and the way it's managed? - ANSWER: Acoustics
Which of the following represents a logarithmic ratio to measure the change in
sound intensity or electric signals? - ANSWER: Decibel (dB)
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? - ANSWER:
Balanced cables
Which of the following connector is commonly used for twisted pair cabling that
carries digital audio over the network? - ANSWER: RJ-45
Which of the following performs as a transducer, converting one form of energy to
another, and is classified based on how it captures sound? - ANSWER: Microphone
Which of the following is referred to as the safety zone that allows audio peaks to
exceed the nominal level without clipping? - ANSWER: Headroom
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? - ANSWER:
Ducking
Which of the following is the last link of the audio signal path? - ANSWER:
Loudspeaker
Which of the following is the average rate of speed at which sound travels through
air, measured at sea level and 70F/20C degrees? - ANSWER: 1128 feet/second (343
meters/second)
The rate at which the sound vibrations repeat is called: - ANSWER: Frequency
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