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5 Written questions

5 Matching questions

  1. lossy compression
  2. 8 bit color
  3. 32 bit integer
  4. data compression
  5. bit depth
  1. a 4 bytes with binary place values 2^0 to 2^31, maximum value (2^32)-1
  2. b some resolution data is lost, image quality affected
  3. c graphic file size made smaller by using special algorithms to reduce amount of data needed for bitmap
  4. d 256 possible colours
  5. e number of bits used to code a colour, aka colour depth

5 Multiple choice questions

  1. Digital color model that uses eight bits each for the three additive colors (red, green, blue.) It can reproduce 256 shades of each primary color. Total 16 million shades. True colour.
  2. resolution dependant (zooming will show pixels), large file size for high resolution / high colour depth, limited editing - pixel operations only
  3. limit for smallest value (near zero) and largest value on number line depends on number of bits for exponent (moves the point)
  4. binary values corresponding to grid of pixels including colour code
  5. limited types of image possible, drawings only

5 True/False questions

  1. precision7 bit code representing (only) latin type alphabets and language symbols


  2. bit map advantagephotos, images that can't easily be represented as shapes


  3. two's complement (8 bit)no resolution information is lost


  4. lossless compressionno resolution information is lost


  5. Unicode16 bit code to represent characters from all the world's alphabets and symbols


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