IGCSE Computer Science (0478) — October–November 2024, Paper 11

9 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.

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Question 1 · 6 marks · 1.4 Units of measurement

The size of a file can be measured using different units. Tick (✓) one box to show which of these is not a unit of measurement for a file. [ ] A bit [ ] B bot [ ] C nibble [ ] D…

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Question 2 · 10 marks · 3.1 Input and output devices

A student has a smartphone. Identify two input devices that can be built into the smartphone.

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Question 3 · 11 marks · 1.2 Text, sound and images / Character sets

A user enters text into a computer system, using a keyboard. An American standard code for information interchange (ASCII) character set is used to convert the text to binary.…

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Question 4 · 11 marks · 2.1 Data transmission / Packet switching

A company decides to create a network for its devices. All the company devices are within a single room. The employees will need to use their devices to send data to each other…

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Question 5 · 11 marks · 3.2 Central processing unit (CPU) / Registers

A central processing unit (CPU) performs the fetch–decode–execute (FDE) cycle. Give the name of two registers that are used in the fetch stage of the cycle.

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Question 6 · 10 marks · 3.2 Central processing unit (CPU) / Embedded systems

A computer programmer uses assembly language to create a computer program for an embedded system in a washing machine. State what is meant by an embedded system.

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Question 7 · 4 marks · 6.2 Operating systems

A computer has an operating system. The operating system provides several functions. Tick (✓) one box to show which of these is not a function of the operating system. [ ] A…

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Question 8 · 4 marks · 4.2 Digital currency / Blockchain

Draw and annotate a diagram to show how a payment transaction is made using digital currency and blockchain.

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Question 9 · 8 marks · 7.3 Artificial intelligence / Expert systems

A doctor's surgery has an expert system that helps diagnose the illnesses of its patients. Complete the paragraph about the operation of the expert system. Use the terms from the…

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