312-49 · Question #221
If you are concerned about a high level of compression but not concerned about any possible data loss, what type of compression would you use?
The correct answer is B. Lossy compression. Lossy compression achieves higher compression ratios by permanently discarding some data that is deemed less perceptually important. Because some original data is lost, the decompressed file is not identical to the original, but the smaller file size is the trade-off. Examples…
Question
If you are concerned about a high level of compression but not concerned about any possible data loss, what type of compression would you use?
Options
- ALossful compression
- BLossy compression
- CLossless compression
- DTime-loss compression
How the community answered
(35 responses)- A3% (1)
- B86% (30)
- C9% (3)
- D3% (1)
Explanation
Lossy compression achieves higher compression ratios by permanently discarding some data that is deemed less perceptually important. Because some original data is lost, the decompressed file is not identical to the original, but the smaller file size is the trade-off. Examples include JPEG for images, MP3/AAC for audio, and MPEG for video. Lossless compression (choice C) preserves all original data exactly but achieves lower compression ratios-used when data integrity is critical (e.g., ZIP, PNG, FLAC). 'Lossful' (choice A) and 'Time-loss' (choice D) are not real compression categories; they are distractors.
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