CHAPTER 4: Data Formats

Question 1

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.

Answer 1

b) analog data.

Question 2

Information that describes or interprets the meaning of the data is known as

a) ASCII.
b) analog.
c) EBCDIC.
d) metadata.

Answer 2

d) metadata.

Question 3

Which of the following is NOT one of the common alphanumeric codes?

a) ASCII
b) Unicode
c) Ordinal
d) EBCDIC

Answer 3

c) Ordinal

Question 4

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

Answer 4

d) sampling rate

Question 5

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.

Answer 5

b) Unicode.

Question 6

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.

Answer 6

c) control characters.

Question 7

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.

Answer 7

d) collating sequence.

Question 8

How many bytes are needed to store one ASCII character?

a) 1
b) 2
c) 3
d) 4

Answer 8

a) 1

Question 9

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.

Answer 9

c) a raster scan.

Question 10

Image files that store each individual point within the image are

a) glyphs.
b) vector images.
c) object images.
d) bitmap images.

Answer 10

d) bitmap images.

Question 11

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.

Answer 11

c) vector images.

Question 12

An example of an image file that uses lossless compression is

a) TIFF.
b) PNG.
c) MP3.
d) JPEG.

Answer 12

b) PNG.

Question 13

Which image file format is best used for photographs of real-world objects?

a) GIF
b) PNG
c) MP3
d) JPEG

Answer 13

d) JPEG

Question 14

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.

Answer 14

b) bitmaps.

Question 15

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.

Answer 15

c) a palette.

Question 16

The individual elements that form a bitmap image are called

a) pixels.
b) palettes.
c) grid bits.
d) resolution.

Answer 16

a) pixels.

Question 17

17) Increasing or decreasing the number of pixels per inch changes the

a) codec.
b) amplitude.
c) resolution.
d) color depth.

Answer 17

c) resolution.

Question 18

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.

Answer 18

b) clearer image.

Question 19

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

Answer 19

a) Easy to create

Question 20

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.

Answer 20

d) glyphs.

Question 21

Video format is determined by an encoder/decoder algorithm known as a

a) codec.
b) modifier.
c) converter.
d) transformer.

Answer 21

a) codec.

Question 22

Video that is transmitted through a network and displayed in real time is called

a) raster.
b) flowing.
c) streaming.
d) Post Script.

Answer 22

c) streaming.

Question 23

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.

Answer 23

c) A-to-D converter.

Question 24

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

Answer 24

a) Genre

Question 25

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

Answer 25

d) MIDI

Question 26

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.

Answer 26

b) Kbits per second.

Question 27

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

Answer 27

b) Psychoacoustic lossy compression

Question 28

The .WAV format is a general-purpose format used primarily to store and reproduce a) text. b) sound. c) movies. d) pictures.

Answer 28

b) sound.

Question 29

Lossless data compression must be used for all of these EXCEPT a) text files. b) program files. c) multimedia files. d) numerical data files.

Answer 29

c) multimedia files.

Question 30

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.

Answer 30

b) lossless algorithms only.

Question 31

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.

Answer 31

b) plug-ins.

Question 32

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.

Answer 32

d) a page description language.

Question 33

Which of the following is NOT an example of a page description language? a) PDF b) PCX c) HTML d) PostScript

Answer 33

b) PCX

Question 34

Two-valued variables or constants with values of true or false are called a) float. b) binary. c) Boolean. d) symbols.

Answer 34

c) Boolean.

Question 35

Numbers with a fractional portion are called a) real. c) integers. b) Boolean. d) enumerated.

Answer 35

a) real.