Q.1
When is Run Length Encoding used?
  • When we want to compress patterns of data
  • When we want to decompress patterns of data
  • When we want to encode running videos
Q.2
What type of compression would you use to compress a text file?
  • Lossy
  • Lossless
Q.3
Data compression is important for websites because:
  • Your webpage will load faster
  • Compressed images look better
Q.4
What type of compression does the ZIP format use?
  • Lossy
  • Lossless
Q.5
What is Lossless Compression?
  • No information is lost but file size is increased
  • There is no loss of information at all after compression
  • Files which have the exact same data after compression
  • Compression involves an algorithm
Q.6
What is compression?
  • To convert one file to another
  • To reduce the size of data to save space
  • To minimise the time taken for a file to be download
  • To compress something by pressing it hard
Q.7
What does Lossy Compression do to files?
  • Increases the file size and keeps the same quality
  • Eliminates no information at all
  • Decreases the file size and keeps the same quality
  • Eliminates unnecessary information in a file to reduce file size
Q.8
Compression that can compress data files without losing any of the information is called
  • Lossy
  • Lossless
Q.9
How many bytes are in 2GB?
  • 2,000000 (2 million)
  • 2000 (2 thousand)
  • 2,000,000,000 (2 billion)
Q.10
How many bytes are in 2KB?
  • 2,000000 (2 million)
  • 2000 (2 thousand)
  • 2,000,000,000 (2 billion)
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