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Information and Communication Technology

Free HKDSE practice

30 free ICT practice questions

Covers computer systems, networks, data, software development, information processing, and social implications.

30 free practice questions

Start with the diagnostic, then open the practice bank

Start one complete 30-question free runner. Questions 1-6 also power the optional diagnostic report, while questions 7-30 remain local practice. Every answer includes an explanation.

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Information and Communication Technology

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30Questions
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Question preview Topic: Information processing, data representation, and systems
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Free practice

Each daily record uses 8 bytes for ID, 8 for timestamp, four 2-byte readings and a 1-byte flag. Ignoring overhead, how much is stored for 1,200 students over 180 days?