Computer Science 9618/31 May/June 2025 past paper

Topics in this paper

Which syllabus chapters 9618/31 May/June 2025 tested, by marks. Each chapter links to every past-paper question on it.

Questions in 9618/31 May/June 2025

1. Question 1Data Types and Structures · 6 marks

   A programmer is writing a program to manage bookings for a small taxi company. The programmer requires some user-defined data types. (a) Write a pseudocode statement to declare the enumerated data type, Vehicle, to hold the identity code of each …

2. Question 2Data Representation · 6 marks

   Numbers are stored in a computer using binary floating-point representation with: • 10 bits for the mantissa • 6 bits for the exponent • two’s complement form for both the mantissa and the exponent. (a) Write the normalised floating-point representation …

3. Question 3Communication and internet technologies · 9 marks

   (a) The Application Layer and Transport Layer are two layers of the TCP/IP protocol suite. Describe the purpose of the Application Layer and the purpose of the Transport Layer. Purpose of Application Layer Purpose of Transport Layer (b) Describe packet …

4. Question 4Data Types and Structures · 7 marks

   (a) A linked list of nodes is used to store an ordered list of integers. Each node consists of the data, a left pointer and a right pointer, for example: 20 Left pointer Right pointer Data The linked list will …

5. Question 5Hardware and Virtual Machines · 8 marks

   This truth table represents a logic circuit. INPUT OUTPUT …

6. Question 6System Software (A Level) · 4 marks

   Describe the process of executing a program using an interpreter.

7. Question 7System Software (A Level) · 6 marks

   Several syntax diagrams are shown. …

8. Question 8System Software (A Level) · 6 marks

   (a) Describe what is meant by multi-tasking and how it benefits process management. (b) Explain the function of the shortest remaining time scheduling routine and give a benefit of this routine. Function Benefit

9. Question 9Security (A Level) · 4 marks

   Secure Socket Layer (SSL) and Transport Layer Security (TLS) are two protocols. (a) State two functions of SSL/TLS. …

10. Question 10Artificial Intelligence (AI) · 6 marks

    (a) Describe the purpose of a graph when used in an Artificial Intelligence (AI) system. (b) Explain the use of artificial neural networks in Deep Learning.

11. Question 11Data Types and Structures · 8 marks

    (a) A medical centre uses objects of the class Appointment to record treatments given and medication prescribed during each doctor’s appointment. Some of the attributes required in the class are listed in the table. Attribute Data type Description DateSeen DATE …

12. Question 12Data Types and Structures · 5 marks

    The pseudocode algorithm checks whether a location in a stock file StockList.dat is empty or not. The location is given by the user. If the location is empty, a suitable message is displayed, otherwise the item stored at that location …

Other Computer Science papers from May/June 2025

• 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