Lossless vs Lossy Data Compression
Authored by Steven Hahn
Computers
9th - 12th Grade
Used 35+ times
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
which of the following is true of lossy and lossless compression techniques?
Lossy compression techniques are no longer commonly used.
Lossless compression is fully reversible, meaning the original file can be recreated bit for bit.
Lossless compression throws away unimportant details that a human being will likely be unable to detect.
Lossy compression is only possible on files that are at least one gigabyte in size before compression.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is true of lossy and lossless compression techniques?
Both lossy and lossless compression techniques will result in some information being lost from the original file.
Neither lossy nor lossless compression can actually reduce the number of bits needed to represent a file.
Lossless compression is only used in situations where lossy compression techniques can't be used.
Lossy compression is best suited for situations where some loss of detail is tolerable, especially if it will not be detectable by a human.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
data compression algorithm that allows the original data to be perfectly reconstructed from the compressed data.
lossy compression
lossless compression
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
_______ (or irreversible compression) a data compression method that uses inexact approximations, discarding some data to represent the content. Most commonly seen in image formats like .jpg.
lossy compression
lossless compression
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
reduces quality
lossy compression
lossless compression
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Makes the file smaller by deleting parts of the file permanently (forever)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of compression does the ZIP format use?
Lossy
Lossless
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