Unit 3 Test CSP

Question 1

Abstraction

Answer 1

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

Question 2

Examples of Abstraction

Answer 2

HTML works without knowing TCP

Question 3

Metadata

Answer 3

data that describes other data

Question 4

Examples of metadata

Answer 4

dimensions, bits per pixel, number of colors, resolution

Question 5

Heuristic

Answer 5

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

Question 6

Heuristic scope

Answer 6

deductive

starts general and then becomes broad

Question 7

BMP

Answer 7

uncompressed image

Question 8

WAV

Answer 8

uncompressed sound

Question 9

JPEG

Answer 9

compressed image-lossy

Question 10

Gif

Answer 10

compressed image-lossless

Question 11

MP3

Answer 11

compressed sound-lossy

Question 12

ZIP

Answer 12

compreessed files-lossless

Question 13

PNG

Answer 13

compressed image-lossless

Question 14

Lossless compression

Answer 14

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

Question 15

Pixel

Answer 15

fundamental unit of a digital image

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

Question 16

Lossy

Answer 16

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

Question 17

What do you gain from lossy?

Answer 17

storage and time

Question 18

What do you loose from lossy?

Answer 18

resolution, precision with decimals, frequencies

need more hardware to decode lossy

Question 19

What is lost during lossless compression?

Answer 19

Time and space

Question 20

Heuristic easy definition

Answer 20

Getting an OKAY answer in an acceptable amount of time