AS & A Level Computer Science (9618) — May–June 2024, Paper 31

11 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 · Floating-point numbers, representation and manipulation

Real numbers are stored in a computer system using floating-point representation with: - 10 bits for the mantissa - 6 bits for the exponent - two's complement form for both the…

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Question 2 · 6 marks · Protocols and the TCP/IP protocol suite

The TCP/IP protocol suite has four layers: Transport, Application, Link, Internet Complete the diagram to show the correct order for these layers. The answer space provides a…

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Question 3 · 7 marks · User-defined data types

Explain what is meant by non-composite and composite data types.

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Question 4 · 5 marks · File organisation and access

Describe the sequential method of file access.

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Question 5 · 9 marks · Reverse Polish Notation

Write this Reverse Polish Notation (RPN) in infix form: 5 2 + 9 3 – / 3

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Question 6 · 10 marks · Boolean algebra, logic circuits and Karnaugh maps

The diagram shows a logic circuit with three inputs, A, B and C, and one output, Z. The circuit contains: - a NOT gate with input B, whose output is labelled P - an AND gate with…

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Question 7 · 5 marks · Encryption, encryption protocols and digital certificates

Describe what is meant by a digital certificate.

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Question 8 · 8 marks · Declarative programming

The set of declarative-language clauses (numbered 01 to 22) describing car features and body styles is given in the shared source material. Sliding doors is a feature that is…

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Question 9 · 3 marks · Artificial Intelligence (AI)

Explain what is meant by Deep Learning in relation to Artificial Intelligence (AI).

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Question 10 · 8 marks · Algorithms — searching

State a condition that must be true for an array to be searchable for a binary search.

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Question 11 · 8 marks · Processors — RISC and CISC

Reduced Instruction Set Computers (RISC) and Complex Instruction Set Computers (CISC) are two types of processor. State two features of RISC processors.

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