COMPUTER SOFTWARE
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: -Lossy compression is typically used when a file can afford to lose some data, and/or if storage space needs to be drastically ‘freed up’. Here, an algorithm scans image files and reduces their size by discarding information considered less important or undetectable to the human eye.
Detailed explanation-2: -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-3: -Lossy compression means that the image size is reduced while some data from the original image file is eliminated. If you’re asking if lossy compression is reversible, the answer is: no. The lossy image process is irreversible. Once you have compressed an image this way, you can’t go back.
Detailed explanation-4: -Lossy compression techniques involve some loss of information, and data that have been compressed using lossy techniques generally cannot be recovered or reconstructed exactly.