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15 | OCR AS AND A LEVEL COMPUTER SCIENCE EXERCISES EXAM |GUARANTEED £9.12   Add to cart
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15 | OCR AS AND A LEVEL COMPUTER SCIENCE EXERCISES EXAM |GUARANTEED
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  • 15 | OCR AS AND A LEVEL COMPUTER SCIENCE EXERCISES
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  • 15 | OCR AS AND A LEVEL COMPUTER SCIENCE EXERCISES

Q1.(a) Explain why compression is considered necessary for images on the web. [2] - ACCURATE ANSWERS Transmission of data is faster (web pages will load more quickly) and uses less data allowance with smaller image files. Q1.(b) Explain why lossy compression techniques would not be suitable for ...

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  • August 29, 2024
  • 4
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • 15 ocr as and a level computer science exercises

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  • 15 | OCR AS AND A LEVEL COMPUTER SCIENCE EXERCISES
  • 15 | OCR AS AND A LEVEL COMPUTER SCIENCE EXERCISES

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15 | OCR AS AND A LEVEL COMPUTER
SCIENCE EXERCISES EXAM
15 | OCR AS AND A LEVEL COMPUTER SCIENCE EXERCISES EXAM |GUARANTEED




Q1.(a) Explain why compression is considered necessary for images on
the web. [2] - ACCURATE ANSWERS✔✔ Transmission of data is
faster (web pages will load more quickly) and uses less data allowance
with smaller image files.


Q1.(b) Explain why lossy compression techniques would not be suitable
for use with files containing large bodies of text. [1] - ACCURATE
ANSWERS✔✔ Since lossy methods do not retain 100% of the original
data, a text file would lose some characters and become more difficult to
read.


Q1.(c) Suggest a suitable lossless method for compressing text. [1] -
ACCURATE ANSWERS✔✔ Dictionary-based compression.

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