Oxford AQA International A-level · Computer Science (9645)

Records: Practice Questions

5 multiple-choice questions marked as you go, and 2 written questions with worked solutions. All on Records.

7 questions13 marksFree, no account

Question 1

1 mark

A university student record system stores a student's ID number, current GPA, and enrollment status.
Which of the following is a key benefit of using a record to store this information?

Question 2

1 mark

A software engineer decides to use an array of records rather than three separate arrays to store the ID, Latitude, and Longitude of several GPS coordinates. What is the primary advantage of this record-based approach in terms of program design?

Question 3

1 mark

A weather station records the station name, current temperature, and time of reading.
What is a primary advantage of organizing this data as a record?

Question 4

1 mark

A programmer is writing a simulation for a car dealership. They define a structure to hold a vehicle's registration number, mileage, and service date.
Which of the following describes an advantage of using a record for this data?

Question 5

1 mark

An e-commerce platform needs to track customer orders, storing the order ID, total cost, and shipping status.
What is the primary advantage of defining these fields within a record?

Question 6

3 marks

Define a record data structure and explain how it allows for the storage of heterogeneous data types, unlike a standard one-dimensional array.

Write your answer out first, then check it against the worked solution.

Question 7

5 marks

A developer uses a record type SensorData to group 12 different real-time readings. This record is passed as a single parameter to a recursive processing subroutine.

Explain the technical impact on the stack frame and overall memory efficiency of passing this data as a single record by reference, compared to passing 12 individual \( \text{float} \) variables as separate parameters.

Write your answer out first, then check it against the worked solution.

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