CHAPTER 4: Data Formats Flashcards
Input from a device that represents a continuous range of data is known as
a) metadata.
b) analog data.
c) various data .
d) discrete data.
b) analog data.
Information that describes or interprets the meaning of the data is known as
a) ASCII.
b) analog.
c) EBCDIC.
d) metadata.
d) metadata.
Which of the following is NOT one of the common alphanumeric codes?
a) ASCII
b) Unicode
c) Ordinal
d) EBCDIC
c) Ordinal
When recording sound, the data that describes how long a time period each captured sound measurement represents is known as the
a) MIDI
b) WAVE
c) amplitude
d) sampling rate
d) sampling rate
The alphanumeric code that has codes for the characters of nearly every character-based alphabet of the world is
a) ASCII.
b) Unicode.
c) Ordinal.
d) EBCDIC.
b) Unicode.
Characters used to control the position of the output on the screen or paper, to cause some action to occur, such as ringing a bell or deleting a character, or to communicate status between the computer and an I/O device are called
a) glyphs.
b) symbols.
c) control characters.
d) command characters.
c) control characters.
The order of the alphanumeric codes in the representation table, which will determine how data is sorted, is known as
a) metadata.
b) scan code.
c) control code.
d) collating sequence.
d) collating sequence.
How many bytes are needed to store one ASCII character?
a) 1
b) 2
c) 3
d) 4
a) 1
The presentation of an image as input or output, one pixel at a time, in order, is called a) metadata.
b) sampling.
c) a raster scan.
d) collating sequence.
c) a raster scan.
Image files that store each individual point within the image are
a) glyphs.
b) vector images.
c) object images.
d) bitmap images.
d) bitmap images.
Images that are defined mathematically as geometrically definable shapes that can be easily moved around, scaled, and rotated without losing their shape and identity are known as
a) GIF images.
b) raster images.
c) vector images.
d) bitmap images.
c) vector images.
An example of an image file that uses lossless compression is
a) TIFF.
b) PNG.
c) MP3.
d) JPEG.
b) PNG.
Which image file format is best used for photographs of real-world objects?
a) GIF
b) PNG
c) MP3
d) JPEG
d) JPEG
The nature of display technology makes it much more convenient and cost effective for regular printers and display screens to display and print all images as
a) palettes.
b) bitmaps.
c) equations.
d) pseudocode.
b) bitmaps.
The color translation table, which translates the code for each pixel into actual color values, is known as
a) a theme.
b) a glyph.
c) a palette.
d) a color chart.
c) a palette.
The individual elements that form a bitmap image are called
a) pixels.
b) palettes.
c) grid bits.
d) resolution.
a) pixels.
17) Increasing or decreasing the number of pixels per inch changes the
a) codec.
b) amplitude.
c) resolution.
d) color depth.
c) resolution.
Making the pixels smaller and increasing their number will result in a
a) corrupt file.
b) clearer image.
c) loss of quality.
d) smaller file size.
b) clearer image.
Which of the following is NOT an advantage of object images over bitmap images?
a) Easy to create
b) Manipulated easily
c) Resolution independent
d) Require far less storage space
a) Easy to create
In graphically based systems it is necessary to distinguish between characters and their object image-based representations, known as
a) PNGs.
b) TIFFs.
c) icons.
d) glyphs.
d) glyphs.
Video format is determined by an encoder/decoder algorithm known as a
a) codec.
b) modifier.
c) converter.
d) transformer.
a) codec.
Video that is transmitted through a network and displayed in real time is called
a) raster.
b) flowing.
c) streaming.
d) Post Script.
c) streaming.
Original sound waves are analog in nature and must be converted to digital form for use in the computer. The circuit that performs this function is known as a(n)
a) analog inverter.
b) digital inverter.
c) A-to-D converter.
d) digital to analog converter.
c) A-to-D converter.
Which of the following waveform metadata would NOT be necessary to process and reproduce the waveform?
a) Genre
b) Sampling rate
c) Maximum amplitude
d) Total number of samples
a) Genre
What is the format used to coordinate the sounds and signals between a computer and connected musical instruments, particularly keyboards?
a) MOD
b) VOC
c) WAV
d) MIDI
d) MIDI
The bit rate of an MP3 file is usually measured in
a) bits per second.
b) Kbits per second.
c) Mbits per second.
d) Gbits per second.
b) Kbits per second.
What is the primary contributor to the small MP3 file size?
a) Lossless compression
b) Psychoacoustic lossy compression
c) Compression, using an algorithm called LZW
d) Compression, similar to that used in .WAV files
b) Psychoacoustic lossy compression
The .WAV format is a general-purpose format used primarily to store and reproduce
a) text.
b) sound.
c) movies.
d) pictures.
b) sound.
Lossless data compression must be used for all of these EXCEPT
a) text files.
b) program files.
c) multimedia files.
d) numerical data files.
c) multimedia files.
ZIP files use
a) lossy algorithms only.
b) lossless algorithms only.
c) mix of both lossless and lossy algorithms.
d) depends on the nature of the data being compressed.
b) lossless algorithms only.
Most page description languages also provide the capability to extend the language to include new data formats and new objects using language stubs called
a) clients.
b) plug-ins.
c) web-apps.
d) applications.
b) plug-ins.
A language that describes the layout of objects on a displayed or printed page is called
a) MIDI.
b) a palette.
c) EBCDIC.
d) a page description language.
d) a page description language.
Which of the following is NOT an example of a page description language?
a) PDF
b) PCX
c) HTML
d) PostScript
b) PCX
Two-valued variables or constants with values of true or false are called
a) float.
b) binary.
c) Boolean.
d) symbols.
c) Boolean.
Numbers with a fractional portion are called
a) real.
c) integers.
b) Boolean.
d) enumerated.
a) real.
