312-49 · Question #2
312-49 Question #2: Real Exam Question with Answer & Explanation
The correct answer is A: Lossless compression. Lossless compression maintains complete data integrity by encoding data in a way that allows the exact original data to be perfectly reconstructed upon decompression. No information is discarded. Lossy compression (and its variants like lossy video or speech encoding) permanently
Question
Data compression involves encoding the data to take up less storage space and less bandwidth for transmission. It helps in saving cost and high data manipulation in many business applications. Which data compression technique maintains data integrity?
Options
- ALossless compression
- BLossy compression
- CSpeech encoding compression
- DLossy video compression
Explanation
Lossless compression maintains complete data integrity by encoding data in a way that allows the exact original data to be perfectly reconstructed upon decompression. No information is discarded. Lossy compression (and its variants like lossy video or speech encoding) permanently removes data deemed less important, which reduces file size further but means the original data cannot be fully recovered — making it unsuitable when data integrity is critical.
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