1) How many bits are used in ASCII? a) 7 b) 6 c) 8 d) 9 2) How many characters can standard ASCII represent? a) 255 b) 64 c) 127 3) What is represented by 0100000 ? a) Question mark b) Hash tag c) Exclamation mark d) Space Bar 4) The smallest controllable element in a picture is called ...... a) a bit b) a pixel c) a nibble d) a byte 5) Inside a pixel there are 3 different coloured lights which are ..... a) red, yellow and green b) red, yellow and blue c) red, green and blue d) cyan, magenta and yellow 6) Image size in bits is calculated using ............... a) height x width b) height x bit depth c) width x bit depth d) height x width x bit depth 7) In a KB there are ..... a) 1000 bytes b) 256 bytes c) 1024 bytes d) 8 bytes 8) Identify how to calculate a file size in MB. a) "Horizontal*Vertical*Bit Depth/8*1024*1024" b) "Horizontal*Vertical*Bit Depth“ c) "Horizontal*Vertical*Bit Depth/8“ d) "Horizontal*Vertical*Bit Depth/8*1024“ 9) How many colours can be represented with a bit depth of 8? a) 2 b) 16 c) 256 d) 16,777,216 10) Image resolution is identified as a) dpi b) ppi c) cbi d) png 11) As the image resolution improves the size of the image ..... a) Increases b) Decreases 12) The character set is the list of binary codes that can be recognised by the computer hardware and software a) True b) False 13) A high sampling frequency gives a more accurate reproduction of an analogue sound a) False b) True 14) The number of bits stored per sample is called the ........................... a) Sample Rate b) Sample Frequency c) Bit depth d) Amplitude 15) Sound resolution is calculated by the formula ....... a) bit depth x no of samples per second b) bit depth x no of samples per second x no of seconds c) no of samples per second x no of seconds d) no of samples per second x no of seconds/ bit depth e) 16) 24 bits allows .... a) 256 gradations of volume b) 65 536 gradations of volume c) 16.7 million gradations of volume

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