AP HUMAN G 209 GCSE COMPUTER SCIENCE Paper 2 Written Assessment

Answer all questions in the spaces provided. box 0 1 . 1 Convert the decimal number 220 into binary. [1 mark] 0 1 . 2 Convert the hexadecimal number AD into binary. You should show your working. [2 marks] Answer 0 1 . 3 Convert the hexadecimal number 1A into decimal. [1 mark] 3 *03* Turn over ► IB/G/Jun21/8520/2 Do not write outside the box 7 0 1 . 4 What is the largest hexadecimal number that can be represented in binary using 8 bits? [1 mark] 0 2 Which of the following is a reason why hexadecimal is used instead of binary? Shade one lozenge. [1 mark] A Computers work in hexadecimal, not binary. B Hexadecimal can be used to represent a wider range of numbers. C Hexadecimal is a standard language and binary is not. D Hexadecimal is more compact when displayed on screen. 0 3 Figure 1 shows a value represented as a bit pattern. Figure 1 1 0 1 1 0 0 0 0 A binary shift can be used to divide the value in Figure 1 by 4. What is the result of this shift?