Test Revision For Topic 3 0.0 / 5 ? ComputingRepresenting dataGCSEEdexcel Created by: Chama ChikwaCreated on: 11-12-22 10:29 What is the advantage of lossy compression? You can decrease the file to a smaller size 1 of 22 The number of bits per pixel in an image is the... Colour Depth 2 of 22 The most appropriate storage unit for a person's surname Bytes 3 of 22 In sound sampling, if you increase the sampling rate what happens to the file size? It increases 4 of 22 What is RLE Run length encoding 5 of 22 The most appropriate storage unit for a one-page text document (with no images) is... Kilobytes 6 of 22 All characters which are recognised / can be represented by the computer system are called... Character Sets 7 of 22 Numbers are sometimes represented as Hexadecimal instead of Binary because... They are easier to remember 8 of 22 The concentration of pixels in a picture is called its... Resolution 9 of 22 What is sample resolution? The number of bits used to store each measure of the amplitude of a soundwave 10 of 22 What is sample rate? The frequency with which you record the amplitude of a soundwave 11 of 22 Convert the denary (decimal) number 58 to binary 111010 12 of 22 To increase the sound quality of a file, you must... Increase the sample rate 13 of 22 What is NOT included in a bitmap file? Number of people in it 14 of 22 Calculate the denary (decimal) value of the 8-bit binary number 1001 0111. 151 15 of 22 The most appropriate storage unit for a ten-minute movie clip (low definition) is... Megabytes 16 of 22 Your computer has a hard disk of 2 Terrabytes. How much is this in Gigabytes? 2000 17 of 22 Convert the hexadecimal number 6A to denary (decimal) 106 18 of 22 What happens when you try to add 1111 1111 to 0000 0001 and only have 8 bits of memory? Overflow 19 of 22 Convert the binary number 0011 1101 to hexadecimal 3D 20 of 22 What is the advantage of lossless compression? You can get all the data back out again 21 of 22 Between Unicode and ASCII, which has a larger character set? (One is 8-bit and one is 16-bit) Unicode 22 of 22
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