Computer Science > GCSE MARK SCHEME > Pearson Edexcel International GCSE in Computer Science (4CP0_01) Paper 1: Principles of Computer Sci (All)
Question Number Answer Additional Guidance Mark 1(a) The only correct answer is B A is not correct because computers only understand binary C is not correct because Hex values will be held as b... inary so take up the same space D is not correct because Hex values are held as binary and so take the same time to execute 1 Question Number Answer Additional Guidance Mark 1(b) Award one mark for each of: • 5 • A Must be in the correct order 2 Question Number Answer Additional Guidance Mark 1(c) The only correct answer is B A is incorrect because this is the number of binary patterns that can be represented by 7 bits C is not correct because this is the number of binary patterns that can be represented by 9 bits D is not correct because this is the number of binary patterns that can be represented by 10 bits 1 Question Number Answer Additional Guidance Mark 1(d) Award one mark for each nibble 0110 0101 2 Question Number Answer Additional Guidance Mark 1(e) Award one mark from: • 01000 (1) • 1000 (1) 1 http://britishstudentroom.wordpress.com/Question Number Answer Additional Guidance Mark 1(f) 7 1 Question Number Answer Additional Guidance Mark 1(g)(i) Award one mark from: • The smallest block (of colour) in an image (1) • A single dot in a picture (1) • A picture element (1) 1 1(g)(ii) Award one mark from: • 8 x 9 (1) • 9 x 8 (1) Accept 72 [Show More]
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