Units and file sizes: OCR GCSE Computer Science questions

Every OCR GCSE Computer Science exam question on 1.2.3 Units and file sizes, 2022–2025, with its mark scheme and examiner’s report.

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282 questions

Q1(b)(ii)
June 2025 · Paper 1
2 marks1.2.3 Units and file sizes
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Q5(a)
June 2025 · Paper 1
1 mark1.2.3 Units and file sizes
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Q5(b)(iii)
June 2024 · Paper 1
1 mark1.2.3 Units and file sizes
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Q5(b)(iv)
June 2024 · Paper 1
2 marks1.2.3 Units and file sizes
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Q1(a)
June 2023 · Paper 1
1 mark1.2.3 Units and file sizes
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Q1(c)
June 2023 · Paper 1
1 mark1.2.3 Units and file sizes
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Q1(d)
June 2023 · Paper 1
1 mark1.2.3 Units and file sizes
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Q1(a)
June 2022 · Paper 1
4 marks1.2.3 Units and file sizes
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All 8 questions on Units and file sizes, as a list

June 2025, Paper 1, Q1(b)(ii) (2 marks): Calculate the total file size of the 10 images in kilobytes. Show your working out. File size: kilobytes [2]
June 2025, Paper 1, Q5(a) (1 mark): Tick (✓) one box to identify the quantity of megabytes that is the same as 2 terabytes. 2000 MB 20 000 MB 200 000 MB 2 000 000 MB [1]
June 2024, Paper 1, Q5(b)(iii) (1 mark): Tick (✓) one box to identify the smallest secondary storage capacity. 2.1 GB 300 MB 200 000 KB 0.0021 TB [1]
June 2024, Paper 1, Q5(b)(iv) (2 marks): The musician’s recordings have an average (mean) file size of 3 MB. The musician has 1000 recordings. Calculate an estimate of the storage space in GB that the
June 2023, Paper 1, Q1(a) (1 mark): Tick (3) one box to identify the statement about binary that is true. Binary digits can only be the values 0, 1 and 2 The left-most bit of a binary integer has
June 2023, Paper 1, Q1(c) (1 mark): Tick (3) one box to identify the largest file size. 2 000 000 bytes 2300 KB 200 MB 0.1 GB [1]
June 2023, Paper 1, Q1(d) (1 mark): Tick (3) two boxes to identify the two file sizes that are equal to each other. 4 500 000 bytes 450 KB 4.5 MB 0.45 GB [1]
June 2022, Paper 1, Q1(a) (4 marks): Tick (3) one box in each row to identify the binary unit equivalent of each of the given file sizes. File size 2 megabytes 2 petabytes 2 kilobytes 2 bytes 2 gig

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