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5 Written questions

5 Matching questions

  1. vector graphic
  2. vector disadvantage
  3. range
  4. lossy compression
  5. two's complement (8 bit)
  1. a limit for smallest value (near zero) and largest value on number line depends on number of bits for exponent (moves the point)
  2. b represents negative and positive numbers in the range -128 to +127
  3. c limited types of image possible, drawings only
  4. d some resolution data is lost, image quality affected
  5. e image stored as collection of shapes, each represented by set of numbers defining properties such as coordinates, line thickness, fill colour, layer level

5 Multiple choice questions

  1. bitmap file size depends on the resolution and the bit depth for pixel colour; (length in pixels) x (breadth in pixels) x (bit depth)
  2. 256 possible colours
  3. image can scale to any size without increasing file size, shapes are fully editable by amending numbers that represent attributes eg change layer
  4. no resolution information is lost
  5. each character needs more bits (twice)

5 True/False questions

  1. data compressionsome resolution data is lost, image quality affected

          

  2. ASCIIlimit for smallest value (near zero) and largest value on number line depends on number of bits for exponent (moves the point)

          

  3. 32 bit integer64 thousand colours

          

  4. bit map disadvantageresolution dependant (zooming will show pixels), large file size for high resolution / high colour depth, limited editing - pixel operations only

          

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

          

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