QUESTIONS AND ANSWERS
In digital video, as long as the proportion of horizontal and vertical pixels remains the
same, the aspect ratio is consistent. (Unit 1) - ANSWER-True
Sampling _______ refers to the number of times per second that a sound is
measured during the recording process. (Unit 1) - ANSWER-Rate
JPEG fields are compressed using lossy compression. (Unit 1) - ANSWER-True
Video resolutions can be expressed as width x height. (Unit 1) - ANSWER-True
3-D graphics are based on vectors stored as a set of instructions describing the
coordinates for lines and shapes in a three-dimensional space. What do these
vectors form? (Unit 1) - ANSWER-A wireframe
The number of frames that are displayed per second is measured in _____. (Unit 1) -
ANSWER-Fps
A file name extension indicates the file format. (Unit 1) - ANSWER-True
Today's color display devices represent color using the _____ color model. (Unit 1) -
ANSWER-RGB
Vector graphics usually require more storage space than bitmaps. (Unit 1) -
ANSWER-False
Regardless of sampling rate, digital audio file size can be reduced using audio
compression techniques. (Unit 1) - ANSWER-True
Plain, unformatted text is sometimes called ASCII text. (Unit 1) - ANSWER-True
Compressed files usually have _____ at the end of the file name. (Unit 1) -
ANSWER-.zip
Lossy compression provides a way to compress data and reconstitute it into its
original state. (Unit 1) - ANSWER-False
Which of the following tools would be found in 3-D graphics software? (Unit 1) -
ANSWER-All of the above
After a vector graphic is converted to a bitmap, the resulting graphic no longer has
the qualities of a vector graphic. (Unit 1) - ANSWER-True
Digital videos look sharpest when they are displayed at a resolution that is larger
than the frame size. (Unit 1) - ANSWER-False
,What is another term for vector graphics software? (Unit 1) - ANSWER-Drawing
Software
A vector graphic consists of a set of instructions for creating a picture. (Unit 1) -
ANSWER-True
The number of colors available in a graphic is referred to as color _____. (Unit 1) -
ANSWER-Depth
Processing is handled by the computer's central processing unit (CPU). (Unit 2) -
ANSWER-True
______ is data that is entered into a computer. ______ is the result produced by a
computer. (Unit 2) - ANSWER-Input, Output
A slate tablet configuration is basically a screen in a narrow frame that lacks a
physical keyboard. (Unit 2) - ANSWER-True
Intel Corporation is the world's largest chipmaker and supplies a sizeable percentage
of the microprocessors that power desktops and laptops. (Unit 2) - ANSWER-True
Most computer ads specify the speed of a microprocessor in gigahertz. (Unit 2) -
ANSWER-True
The term instruction cycle refers to the process in which a computer executes a
single instruction. (Unit 2) - ANSWER-True
In a microprocessor, the __________ fetches instructions. (Unit 2) - ANSWER-
Control unit
The ability to switch between programs makes computers multipurpose devices.
(Unit 2) - ANSWER-True
In a display device, response rate is the time it takes for one pixel to change from
black to white then back to black. (Unit 2) - ANSWER-True
Modern refrigerators, washing machines, and other appliances are controlled by
integrated circuits called ____________ that combine sensors with processing
circuitry. (Unit 2) - ANSWER-Microcontrollers
Smartwatches are multifunction devices that can include a camera, thermometer,
compass, calculator, cell phone, GPS, media player, and fitness tracker. (Unit 2) -
ANSWER-True
_________ is a temporary holding area for data and programs. (Unit 2) - ANSWER-
RAM
During an instruction cycle, all parts of the instruction are performed by the
microprocessor's control unit. (Unit 2) - ANSWER-False
, What type of computer should you consider purchasing if you want a system that is
ideal for dedicated gamers, serious designers, desktop publishers, and video
editors? (Unit 2) - ANSWER-Desktop
A solid state drive can be used as a substitute for a hard disk drive. (Unit 2) -
ANSWER-True
Memory cards are typically volatile. (Unit 2) - ANSWER-False
Computers with the same operating systems can typically use the same software
and peripheral devices. (Unit 2) - ANSWER-True
A desktop is a portable computing device featuring a touch-sensitive screen that can
be used for input as well as for output. (Unit 2) - ANSWER-False
The part of the data bus that runs between the microprocessor and RAM is called
the _______ bus. (Unit 2) - ANSWER-Local
Battery life is the time your device operates before it must be recharged. (Unit 2) -
ANSWER-True
Which of the following is an example of a computer that is a small, lightweight
personal computer that is designed like a clam shell? (Unit 2) - ANSWER-Laptop
computer
The electronic components of most digital devices are mounted on a circuit board
called a ______________. (Unit 2) - ANSWER-All of the above
RAM is volatile. (Unit 2) - ANSWER-True
The operating systems for smartphones are radically different to those used for
tablet computers. (Unit 2) - ANSWER-False
When a peripheral device is connected or disconnected while the host device is
operating, it is called hot-plugging. (Unit 2) - ANSWER-True
When interference affects a wireless signal, data must be re-transmitted. (Unit 3) -
ANSWER-True
Wi-Fi signals may reach up to 300 feet from the router. (Unit 3) - ANSWER-True
_______ are designed to provide connectivity for devices within a limited area,
typically within the premises of a home, office building, business, or school. (Unit 3) -
ANSWER-LANs
UDP is faster than TCP but does not perform error checking. (Unit 3) - ANSWER-
True
When setting up a Wi-Fi network, the router you select should support the fastest
device you'll want to use on the network. (Unit 3) - ANSWER-True