Memory & StorageIntroduction

The Travel Packing Problem

Part of CompressionGCSE Computer Science

This introduction covers The Travel Packing Problem within Compression for GCSE Computer Science. Revise Compression in Memory & Storage for GCSE Computer Science with 15 exam-style questions and 16 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 1 of 11 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 1 of 11

Practice

15 questions

Recall

16 flashcards

The Travel Packing Problem

You're packing for a trip. Lossless packing: You vacuum-seal clothes to remove air - they're smaller but unfold perfectly. Lossy packing: You leave your winter coat home and pack a thin jacket instead - much lighter, but not quite the same. Lossless compression is like vacuum-sealing - you can get the exact original back. Lossy compression is like leaving stuff behind - the result is good enough but some detail is permanently gone. Photos, music, videos = usually lossy (you won't notice). Documents, programs, medical scans = always lossless (need exact original)!

Keep building this topic

Read this section alongside the surrounding pages in Compression. That gives you the full topic sequence instead of a single isolated revision point.

Practice Questions for Compression

Which statement correctly describes lossy compression?

  • A. The original file can be perfectly restored after decompression.
  • B. Data is permanently removed and the original cannot be exactly recreated.
  • C. The compressed file is always the same size as the original.
  • D. No data is removed during the compression process.
1 markfoundation

Explain how run-length encoding (RLE) works to compress data.

3 marksstandard

Quick Recall Flashcards

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