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Methods of error detection past paper questions

O Level Computer Science 2210 · Data transmission. 1 Understand the need to check for errors after data transmission and how these errors can occur 2 Describe the processes involved in each of the following error detection methods for detecting errors in data after transmission: parity check (odd and even), checksum and echo check 3 Describe how a check digit is used to detect errors in data entry and identify examples of when a check digit is used, including international standard book numbers (ISBN) and bar codes 4 Describe how an automatic repeat query (ARQ) can be used to establish that data is received without error Errors can occur during data transmission due to interference, e.g. data loss, data gain and data change Including parity byte and parity block check Including the use of: – positive/negative acknowledgements – timeout

In Cambridge O Level Computer Science 2210, Methods of error detection came up in 13 of the 34 papers on Paperstreak, for about 6 marks a paper when it does. It last came up in October/November 2025.

Often set with Types and methods of data transmission, Input and output devices.

13 questions, newest first

  1. 2210/12/O/N/25 Question 7 parts (f(i)) (f(ii)) · 4 marks
  2. 2210/11/M/J/25 Question 4 parts (b(i)) (b(ii)) · 6 marks
  3. 2210/12/M/J/25 Question 3 part (c(iii)) · 4 marks
  4. 2210/12/O/N/24 Question 5 parts (a) (b(iii)) · 6 marks
  5. 2210/13/O/N/24 Question 2 parts (f(i)) (f(ii)) · 5 marks
  6. 2210/11/M/J/24 Question 9 parts (a) (b(i)) (b(ii)) · 13 marks
  7. 2210/12/M/J/24 Question 6 · 5 marks
  8. 2210/13/O/N/23 Question 5 · 7 marks
  9. 2210/12/O/N/22 Question 5 · 4 marks
  10. 2210/13/O/N/22 Question 9 · 6 marks
  11. 2210/11/M/J/21 Question 8 parts (a) (b) · 5 marks
  12. 2210/13/O/N/20 Question 7 · 6 marks
  13. 2210/11/M/J/20 Question 4 · 6 marks

More in Data transmission: Types and methods of data transmission, Encryption.

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