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Extron Final Exam With All Questions and Answers
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Extron Final Exam With All Questions andAnswers
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
Which one of the following digital broadcast standards is adopted in
Europe, Asia, and Africa? - ANSWER DVB
DVI and HDMI both use a signaling method known as: - ANSWER
TMDS
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
- 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
- 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
Which of the following is related to the amount of energy that a sound
wave carries? - ANSWER Amplitude
Which of the following is a low voltage level that comes out of a
microphone when someone speaks into it? - ANSWER Mic Level
Which of the following has two conductor wires, one for the hot audio
signal, and one for ground? - ANSWER Unbalanced cables
Which of the following carries two independent channels for left and
right audio, and creates the impression of sound heard from various
directions? - ANSWER Stereo sound signals
When a microphone signal first enters a mixer, which of the following
is used to control the input level of the audio. - ANSWER Gain
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