1.2.5 Compression Flashcards by Abigail Bartlett

Q

bandwidth

A

amount of data than can be transferred in a given time

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Q

data compression

A

when we make a file smaller

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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

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Q

lossy definition

A

permanently removing data from the file

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Q

lossless definition

A

temporarily removing data from the file

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Q

lossy pros (3 things)

A

reduces file size
takes up less bandwidth
commonly used

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Q

lossy cons (3 things)

A

loss of data
can’t be used on text files
worse quality

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Q

lossy uses (3 things)

A

MP3 audio
AAC audio
JPEG image

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Q

lossless pros (3 things)

A

same quality
can be compressed back to original
can be used on text files

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Q

lossless cons (2 things)

A

only slight reduction in file size
still takes up a lot of space

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Q

lossless uses (3 things)

A

FLAC audio
TIFF image
PNG image

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