Computer Science > Edexcel > Pearson Edexcel International GCSE in Computer Science (4CP0_01) Paper 1: Principles of Computer Sci (All)

Pearson Edexcel International GCSE in Computer Science (4CP0_01) Paper 1: Principles of Computer Science. latest 2022. Mark Scheme (Provisional) Summer 2021

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All the marks on the mark scheme are designed to be awarded. Examiners should always award full marks if deserved, i.e. if the answer matches the mark scheme. Examiners should also be prepared to award zero marks if the candidate’s response is not worthy of credit according to the mark scheme. • Where some judgement is required, mark schemes will provide the principles by which marks will be awarded and exemplification may be limited. • When examiners are in doubt regarding the application of the mark scheme to a candidate’s response, the team leader must be consulted. • Crossed out work should be marked UNLESS the candidate has replaced it with an alternative response. http://britishstudentroom.wordpress.com/ 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 binary 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 1 1(g)(iii) 4 1 Question Number Answer Additional Guidance Mark 2(a) Award one mark from: • share peripherals/devices (e.g. printers, scanners) (1) • communicate (e.g. email, instant messaging, play games) (1) • share data (e.g. files/music/videos/backups on servers) (1) • deploy/update applications/software(1) • administrative purposes (e.g. remote access/desktop) 1 Question Number Answer Additional Guidance Mark 2(b) Award one mark from: • to allow (connected) machines to communicate (1) • to provide the rules of communication between (networked) devices (1) Accept any other response indicating protocols enable communication between devices

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