COMPUTER SCIENCE AND ENGINEERING
SYSTEM SOFTWARE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Usually performed on text
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When some original data is lost and the original file cannot be re-created
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The original file can be re-created from the compressed file
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Turning the text into a format that only a reader with a key can decrypt it
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Detailed explanation-1: -In lossy compression, the data in a file is removed and not restored to its original form after decompression. Specifically, data is permanently removed, which is why this method is also known as irreversible compression. This data loss is not usually noticeable.
Detailed explanation-2: -Lossy compression techniques involve some loss of information, and data that have been compressed using lossy techniques generally cannot be recovered or reconstructed exactly.
Detailed explanation-3: -Lossless compression is a compression technique that does not lose any data in the compression process. Lossless compression “packs” data into a smaller file size by using a kind of internal shorthand to signify redundant data.
Detailed explanation-4: -Lossy is a data encoding and compression technique that deliberately discards some data in the compression process. The lossy compression method filters and discards needless and redundant data to reduce the amount of data being compressed and later being executed on a computer.