A-LevelComputer ScienceData Communication and NetworkingOct/Nov 2025Paper 1 Q12 Marks
Draw one line from each verification method to indicate whether it is used during data transfer or data entry. Verification Method Parity byte check Checksum Visual check Parity block check Use Data transfer Data entry
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The correct answer is —. This question tests the candidate's understanding of data communication and networking within the Computer Sciencesyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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