PS4 Computing – Full Practice Paper

Progression Step 4 · Years 7–9

40 mins · 35 marks · Both

Practice only – not official WJEC past papers. Use alongside your school teaching and revision guides.

Show working for binary. About 40 minutes.

1. Question 1[4 marks]

   What is an algorithm? Give an everyday example.

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2. Question 2[4 marks]

   Convert binary 00001101 to denary.

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3. Question 3[5 marks]

   Explain the difference between input and output devices with one example of each.

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4. Question 4[5 marks]

   What is the purpose of a loop in a program?

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5. Question 5[5 marks]

   Describe one online safety risk and how to reduce it.

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6. Question 6[6 marks]

   Write pseudocode to input a password and output ‘Access granted’ only if it equals secret.

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7. Question 7[6 marks]

   Explain the difference between hardware and software with examples.

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