Data transmission: past paper questions

Where the questions come from

• Question 4May/June 2026, paper 11Structured11 marks

  An optical mouse is connected to a computer using a universal serial bus (USB) cable. State the purpose of the optical mouse.

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• Question 5Oct/Nov 2025, paper 12Structured10 marks

  A computer system has a mouse. An interrupt is sent to the CPU every time a button on the mouse is clicked. Identify the name of this type of interrupt.

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• Question 5Oct/Nov 2024, paper 12Structured12 marks

  A barcode scanning system uses a check digit to check for errors in data on input. Explain how the barcode scanning system operates to check for errors.

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• Question 6Oct/Nov 2023, paper 12Structured4 marks

  The table contains descriptions about data transmission methods. Complete the table by identifying which data transmission methods are described.

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• Question 6May/June 2026, paper 11Structured10 marks

  Web pages need to be located and retrieved to be displayed on a device. Complete the paragraph about locating and retrieving web pages.

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• Question 7Oct/Nov 2025, paper 12Structured16 marks

  A house has a smart speaker that can take voice commands as input. A person in the house can tell the smart speaker to play music or audio books. The smart speaker cannot be described as a robot.

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• Question 7Oct/Nov 2024, paper 12Structured14 marks

  A student enters the uniform resource locator (URL) for a web page into their tablet computer. State what is meant by a URL.

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• Question 8Oct/Nov 2023, paper 12Structured6 marks

  Draw and annotate a diagram that demonstrates the cyber security threat of data interception.

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• Question 4May/June 2025, paper 11Structured12 marks

  A restaurant has an electronic ordering system. The system allows customers to select the food they want to order. The data for the order is transmitted across their network to a computer in the restaurant kitchen.

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• Question 4May/June 2024, paper 11Structured7 marks

  Data packets are transmitted across a network from one computer to another computer. Describe the structure of a data packet.

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• Question 2May/June 2023, paper 11Structured10 marks

  A student has a sound file that is too large to be stored on their external secondary storage device. The student compresses the sound file to make the file size smaller. The compression method used reduces the sample rate and the sample resolution of the sound file.

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• Question 4May/June 2026, paper 12Structured10 marks

  An odd parity byte check is used to check for errors in data that is transmitted from a computer to a printer. Three bytes of data need to be transmitted. Give the correct parity bit that would be added to each byte of data for an odd parity byte check.

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• Question 6May/June 2025, paper 11Structured9 marks

  Data can be encrypted using asymmetric encryption. Complete the paragraph about asymmetric encryption.

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• Question 7May/June 2024, paper 11Structured4 marks

  Data is encrypted to keep it safe during transmission. Complete the paragraph about asymmetric encryption.

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• Question 4May/June 2023, paper 12Structured9 marks

  A student uses a mobile phone to take photographs for a school project. The student needs to transmit the photographs to their computer. They could use serial data transmission or parallel data transmission to transmit the photographs.

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• Question 3May/June 2025, paper 12Structured22 marks

  A programmer writes a program to store and sort all the data for the books in her home library. The programmer uses a high-level language to write the program.

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• Question 9May/June 2024, paper 11Structured20 marks

  A company owner has installed a new network. Data is correct before it is transmitted across the network. The company owner is concerned that data might have errors after transmission.

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• Question 2May/June 2024, paper 12Structured7 marks

  Data can be transmitted from one device to another. Tick (✓) one box to show which of the terms is not a method for transmitting data.

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• Question 6May/June 2024, paper 12Structured5 marks

  The table contains statements about error detection methods. Complete the table by giving the correct error detection method for each statement.

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