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EXTRON COMPLETE EXAM QUESTIONS AND VERIFIED ANSWERS
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EXTRON COMPLETE EXAM QUESTIONS AND VERIFIED ANSWERS....
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Up to which of the following rates can the human eye distinguish individualpicture frames? - ANSWER 10-12 frames per second
Which one of the following is a projector projecting a ray of light through a lens
to display an image onto a surface? - ANSWER Projector
Which of the following is the single small entity of a digital picture, made up of
discrete Red, Green and Blue - RGB colour components? - ANSWER Pixel
Chroma Subsampling is a type of: - ANSWER Compression
True or False: Progressive Scanning draws every line successively from left to
right, drawing a complete image frame in one pass from top to bottom. -
ANSWER True
Which of the following is the rate at which the display can redraw the screen to
show a new image? - ANSWER Refresh Rate
Which of the following interfaces renders the images as micro packets similar to
network data? - ANSWER DisplayPort
,Which of the following is used for connecting keyboard, mouse, etc., peripheral
devices to computers and also for power to charge portable devices? -
ANSWER USB
Which of the following describes the relationship of width and height of an
image? - ANSWER Aspect Ratio
Which of the following measures an image's width and height using pixels? -
ANSWER Resolution
Which 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 of the following reflectives have a surface comprising of thousands of
very small mirrors, each one corresponding to one pixel? - ANSWER DLP
Which of the following is the finest division of screen image and consists of
individual Red, Green, and Blue - RGB primary colors? - ANSWER Pixels
Interlaced Scanning can be defined as:- ANSWER Images are drawn in two
alternate fields as odd & even numbered lines
Which of the following reflects the number of data allocated for each pixel to
represent color data? - ANSWER Color Bit Depth
Which of the following is a digital transmission interface for uncompressed
video, multi-channel audio, and control data which 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 employ an identical signalling methodology referred to as:
- ANSWER TMDS
Which of the following terms refers to the science or study of sound and how it
is generated, its ability to travel within a space, and the way of its control? -
ANSWER Acoustics
- ANSWER Decibel (dB)
Which of the following does contain 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 the safety zone that allows audio peaks to exceed the
nominal level w/o clipping? - ANSWER Headroom
Which of the following is a drop in sound levels for background music, in order
to focus the audio on an important voice-over announcement? - ANSWER
Ducking
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