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GCSE AQA Computer Science (8525): 3.5 Fundamentals of Computer Networks Exam

Instructions:

• Answer all questions.
• Provide examples where required.
• Write answers clearly, explaining key terms.
• Time: 45 minutes.
• Total: 25 marks.

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Section A: Short-Answer Questions (10 marks)

1. Define a computer network. (1 mark)

2. State the difference between a LAN and a WAN. (2 marks)

3. Name two types of network topology. (2 marks)

4. What is a protocol in networking? Give one example. (2 marks)

5. What is the main function of a switch in a network? (1 mark)

6. What does a router do? (1 mark)

7. Name the four layers of the TCP/IP model. (1 mark)

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Section B: Explanation and Application Questions (15 marks)

8. Explain the difference between a star and a bus topology. Include one advantage and one disadvantage of each. (4 marks)

9. Describe the role of the Application layer and Transport layer in the TCP/IP model. (3 marks)

10. Explain how data is transmitted over a network using packet switching. Include the terms packet and header. (3 marks)

11. A school has computers in two buildings 2 km apart. Should they use a LAN or WAN? Justify your answer. (2 marks)

12. Explain the difference between the TCP/IP model and the OSI model. Include the number of layers in each. (3 marks)

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End of Questions

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