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If a file is compressed using lossy compression, which of the following is true about the decompressed file?

medium📝 Analysis Q5 of 15
Intro to Computing - How Data is Represented
If a file is compressed using lossy compression, which of the following is true about the decompressed file?
AIt becomes larger than the original file
BIt is exactly the same as the original file
CIt cannot be opened without special software
DIt may lose some quality or data compared to the original
Step-by-Step Solution
Solution:

  1. Step 1: Understand lossy compression

    Lossy compression reduces file size by removing some data, causing quality loss.

  2. Step 2: Determine decompressed file quality

    The decompressed file is similar but may have lower quality or missing data.

  3. Final Answer:

    It may lose some quality or data compared to the original -> Option D

  4. Quick Check:

    Lossy decompression = Possible quality loss [OK]
Quick Trick: Lossy compression trades quality for smaller size [OK]
Common Mistakes:
  • Thinking lossy is exact like lossless
  • Assuming lossy files can't be opened
  • Believing lossy files get bigger

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