1) A 7-bit character set used for representing English keyboard characters. a) ASCii b) Bitmap c) Colour Depth d) Binary 2) Images on a screen are made up of tiny coloured blocks called... a) Bitmaps b) Bits c) Pixels d) Colours 3) ...tells us what range of colours are available in an image. a) Resolution b) Colour depth c) Pixels d) ASCii 4) ...is the measure of pixel density. a) Resolution b) Colour Depth c) Bits d) Pixels 5) If an image has a colour depth of 3 bits, how many colours are available per pixel? a) 32 = 9 colours per pixel. b) 33 = 27 colours per pixel c) 2 x 3 = 6 colours per pixel d) 23 = 8 colours per pixel. 6) If an image has a colour depth of 8 bits, how many colours are available per pixel? a) 82 = 64 colours per pixel. b) 28 = 256 colours per pixel. c) 2 x 8 = 16 colours per pixel d) 88 = 16.7 million colours per pixel 7) A method of reducing file sizes is... a) Reduction b) Data loss c) Compression d) Resolution 8) There are 2 types of compression. These are... a) Lost b) Lossy c) Losses d) Lossless 9) A form of compression that reduces digital file sizes by removing data is... a) Lossy b) Lossless 10) A form of compression that encodes digital files without losing detail. Files can also be restored to their uncompressed quality. a) Lossy b) Lossless

9.4.1 KR Representing Characters and Images

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