AQA GCSE COMPUTER SCIENCE 8525/2 Paper 2 Computing concepts Mark scheme

Mark is for AO1 (recall) D 16; R. if more than one lozenge shaded 12 marks for AO1 (understanding) 3 marks for AO2 (apply) 0.5MB;;; If the answer given is not fully correct then award a maximum of 2 working marks as follows, even if the resulting intermediate calculation is incorrect: • Multiplying 50 or 4 by 20 000; • Multiplying 50 or 20 000 by 4; • Dividing result of calculation by 8 or 8000; • Dividing result of calculation by 1 000 000 or 1000; 3 B Hexadecimal is easier for people to read than binary; F Hexadecimal takes less time to type than binary; R. if more than two lozenges shaded 2 2 marks for AO2 (apply) 0010; 1101; If the answer given is not fully correct then award a maximum of 1 working mark as follows: • 2 converted to 0010 • D converted to 1101 • D converted to decimal 13 • Conversion to decimal 45 A. missing leading zeros I. additional leading zeros 2 marks for AO2 (apply) 2;; If the answer given is not fully correct then award a maximum of 1 working mark as follows: • Division by 8; • Division by 1000; • Division by 1 000 000;