Computer Science 9618/31 Oct/Nov 2022 past paper

Grade thresholds for 9618/31 Oct/Nov 2022

The minimum raw marks Cambridge set for each grade on this component (out of 75). Thresholds change every session and variant, so always compare your score with the paper you actually sat.

Topics in this paper

Which syllabus chapters 9618/31 Oct/Nov 2022 tested, by marks. Each chapter links to every past-paper question on it.

Questions in 9618/31 Oct/Nov 2022

1. Question 1Data Representation · 9 marks

   Real numbers are stored in a computer system using floating-point representation with: • 8 bits for the mantissa • 8 bits for the exponent • two’s complement form for both mantissa and exponent. (a) Write the normalised floating-point representation of …

2. Question 2Communication and internet technologies · 5 marks

   Outline the functions of the Transport and Internet layers of the TCP/IP protocol suite. Transport layer Internet layer

3. Question 3Data Types and Structures · 8 marks

   (a) State what is meant by the term enumerated data type. (b) State what is meant by the term pointer data type. (c) The months of the year are: January, February, March, April, May, June, July, August, September, October, November …

4. Question 4System Software (A Level) · 4 marks

   Draw one line to connect each stage of compilation to its most appropriate description. Stage of compilation Description Lexical analysis Syntax analysis Code generation Optimisation minimising a program’s execution time and memory requirement converting an intermediate representation of source code …

5. Question 5Data Types and Structures · 3 marks

   (a) Write the infix expression in Reverse Polish Notation (RPN). …

6. Question 6Security (A Level) · 8 marks

   A message is encrypted using a private key and sent to an individual using asymmetric encryption. (a) State what is meant by a private key. (b) Describe the process of asymmetric encryption. (c) Explain how a digital signature is used …

7. Question 7Hardware and Virtual Machines · 7 marks

   (a) Complete the Karnaugh map (K-map) for the Boolean expression. …

8. Question 8System Software (A Level) · 4 marks

   Virtual memory, paging and segmentation are used in memory management. (a) Explain what is meant by virtual memory. (b) State one difference between paging and segmentation in the way memory is divided.

9. Question 9Artificial Intelligence (AI) · 4 marks

   Deep learning is used in Artificial Intelligence (AI). (a) Describe what is meant by deep learning. (b) Outline the reasons for using deep learning.

10. Question 10Processor Fundamentals · 6 marks

    Reduced Instruction Set Computers (RISC) and Complex Instruction Set Computers (CISC) are two types of processor. (a) Tick (3) one box in each row to show if the statement applies to RISC or CISC processors. Statement RISC CISC uses a …

11. Question 11Further Programming · 8 marks

    (a) Define these Object-Oriented Programming (OOP) terms: Instance Inheritance Polymorphism (b) In OOP, a class contains attributes and methods. Complete the pseudocode for the class Car to enable objects to be created. The class needs to include: • string attributes …

12. Question 12Algorithm Design and Problem-solving · 9 marks

    (a) The array Names[0:99] is in alphabetical order. Complete this pseudocode binary search algorithm. Lower ← 0 Mid ← 0 Exit ← FALSE OUTPUT "Enter the name to be found " INPUT Target REPEAT THEN OUTPUT Target, " does not …

Other Computer Science papers from Oct/Nov 2022

• 9618/11 Theory fundamentals
• 9618/12 Theory fundamentals
• 9618/13 Theory fundamentals
• 9618/21 Problem-solving & programming
• 9618/22 Problem-solving & programming
• 9618/23 Problem-solving & programming
• 9618/32 Advanced theory
• 9618/33 Advanced theory
• 9618/41 Practical programming
• 9618/42 Practical programming
• 9618/43 Practical programming