1.2.5 Compression Flashcards
1
Q
bandwidth
A
amount of data than can be transferred in a given time
2
Q
data compression
A
when we make a file smaller
3
Q
data compression is used because: (4 things)
A
- takes up less space
- makes streaming/downloading quicker
- web pages load quicker
- same content, smaller size
4
Q
lossy definition
A
permanently removing data from the file
5
Q
lossless definition
A
temporarily removing data from the file
6
Q
lossy pros (3 things)
A
- reduces file size
- takes up less bandwidth
- commonly used
7
Q
lossy cons (3 things)
A
- loss of data
- can’t be used on text files
- worse quality
8
Q
lossy uses (3 things)
A
MP3 audio
AAC audio
JPEG image
9
Q
lossless pros (3 things)
A
- same quality
- can be compressed back to original
- can be used on text files
10
Q
lossless cons (2 things)
A
- only slight reduction in file size
- still takes up a lot of space
11
Q
lossless uses (3 things)
A
FLAC audio
TIFF image
PNG image
