Unit 3 Test CSP Flashcards Preview

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Flashcards in Unit 3 Test CSP Deck (20):
1

Abstraction

allowing lower level protocols to provide functionality to higher level protocols without needing to know how the lower level works

2

Examples of Abstraction

HTML works without knowing TCP

3

Metadata

data that describes other data

4

Examples of metadata

dimensions, bits per pixel, number of colors, resolution

5

Heuristic

a problem solving approach (algorithm) to find a satisfactory solution where finding an optimal or exact solution is impractical or impossible

6

Heuristic scope

deductive

starts general and then becomes broad

7

BMP

uncompressed image

8

WAV

uncompressed sound

9

JPEG

compressed image-lossy

10

Gif

compressed image-lossless

11

MP3

compressed sound-lossy

12

ZIP

compreessed files-lossless

13

PNG

compressed image-lossless

14

Lossless compression

data compression algorithm that allows the compressed data to be perfectly reconstructed

15

Pixel

fundamental unit of a digital image

tiny square or dot which contains a single point of color of a larger image

16

Lossy

compression scheme in which "useless" information is thrown out in order to reduce the size of the data

17

What do you gain from lossy?

storage and time

18

What do you loose from lossy?

resolution, precision with decimals, frequencies

need more hardware to decode lossy

19

What is lost during lossless compression?

Time and space

20

Heuristic easy definition

Getting an OKAY answer in an acceptable amount of time