EXAM QUESTIONS AND ANSWERS 2025
The human eye can differentiate individual picture frames at which of
the following rates? - correct 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? - correct answer- Projector
Which of the following is the smallest component of a digital image,
composed of individual Red, Green, and Blue - RGB color elements? -
correct answer- Pixel
Chroma Subsampling is a form of: - correct 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. - correct
answer- True
Which of the following describes how often the display can redraw the
screen to show a new image? - correct answer- Refresh Rate
Which of the following interfaces renders images as micro packets similar
to network data? - correct 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? -
correct answer- USB
Which one of the following describes the relationship of width and height of
an image? - correct answer- Aspect Ratio
Which one of the following measures an image's width and height using
pixels? - correct 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? - correct answer- OLED
Which one of the following is a reflective surface made up of thousands
of tiny mirrors, each representing a single pixel? - correct 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? -
correct answer- Pixels
Interlaced scanning may be described as: - correct 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? - correct 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? - correct
answer- HDMI (High Definition Multimedia Interface)
Which one of the following digital broadcast standards is
adopted in Europe, Asia, and Africa? - correct answer- DVB (Digital Video
Broadcasting)
DVI and HDMI both use a signaling method known as: - correct 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? -
correct answer- Acoustics
Which of the following represents a logarithmic ratio to measure the change
in sound intensity or electric signals? - correct 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? - correct answer- Balanced cables