file compression

• What is file compression?

  Reducing the size of data for efficiency
• Why is compression important for data storage?

  It makes data more manageable and efficient
• How does compressing a large parcel relate to digital data?

  Both allow for easier transport and storage
• What is the effect of data compression on transfer speed?

  It facilitates faster transfer over networks
• What are the two types of data compression?

  Lossy and lossless compression
• What is lossy compression?

  It reduces file sizes by eliminating some data
• How does lossy compression affect file quality?

  It lowers quality and is irreversible
• Where is lossy compression commonly used?

  In video, audio, and image files
• How does reducing color variations in images help compression?

  It creates a similar image with less data
• What is the primary advantage of lossy compression?

  Significant file size reduction
• What is lossless compression?

  Reduces size without losing any information
• What formats commonly use lossless compression?

  PNG and zip files
• How does lossless compression work with repeated characters in text?

  It encodes them to save storage space
• What is a primary advantage of lossless compression?

  Ability to restore files to original quality
• What is the primary drawback of lossless compression?

  File sizes are generally larger than lossy
• What are the key differences between lossy and lossless compression?

  • Lossy Compression:
  • Permanently eliminates some data
  • Used in video, audio, images (e.g., JPEG)
  • Significant size reduction, lower quality

  
  

  • Lossless Compression:
  • Retains all original data
  • Used in images, audio, documents (e.g., PNG, zip)
  • Restores original quality, larger file sizes
• What is the conclusion about file compression?

  It is crucial for efficient data management
• How do lossy and lossless compression methods impact data management?

  Lossy reduces size but sacrifices quality; lossless preserves quality at larger sizes