Compression Flashcards
1
Q
Data Compression
A
Make file size smaller
2
Q
Uses of compressing data files;
A
Take up less storage
Streaming + downloading files from Internet is quicker (take up less bandwidth)
Email Services have restrictions on file size
3
Q
Name two types of Compression
A
Lossy
Lossless
4
Q
What is lossy compression?
A
Permanently removes data from the file -> limits the number of bits the file needs
5
Q
What is lossless compression?
A
Makes the file smaller -> temporarily removes data and restores it when the file is opened
6
Q
Lossy file types
A
MP3 (audio)
JPEG (image)
7
Q
Lossless file types
A
PNG (image)
