MULTIMEDIA AND QUALITY OF SERVICE
COMPRESSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the most important quality of lossless compression?
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The data is transformed to usually make it smaller. It can always be reconstructed back to the original.
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The data is transformed to always make it smaller. It can always be reconstructed back to the original.
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The data is transformed to usually make it smaller. It cannot always be reconstructed back to the original.
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The data is transformed to always make it smaller. It cannot always be reconstructed back to the original.
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Explanation:
Detailed explanation-1: -If data have been losslessly compressed, the original data can be recovered exactly from the compressed data. Lossless compression is generally used for applications that cannot tolerate any difference between the original and reconstructed data. Text compression is an important area for lossless compression.
Detailed explanation-2: -Text messages can best be compressed using lossless compression because you can reduce the number of bits needed without losing any information.
Detailed explanation-3: -Lossless compression is a class of data compression algorithms that allows the original data to be perfectly reconstructed from the compressed data.
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