GCSE Computer Science Paper 2: Topic 2.2

What is a subroutine in programming?

• A specific type of variable

• A named block of code designed to perform a specific task

• A user interface element

• A type of data structure

What is the main difference between a procedure and a function?

• A procedure returns a value, while a function does not

• A procedure can use parameters, but a function cannot

• A function returns a value, while a procedure does not

• A function can only be called once

What type of variable is accessible only within the subprogram it is declared in?

• Parameter

• External variable

• Global variable

• Local variable

Why is it important to use sensible naming conventions in programming?

• To comply with legal requirements

• To reduce memory usage

• To increase processing speed

• To enhance code readability and maintainability

What is the purpose of indentation in programming?

• To enhance the visual appeal of the code

• To indicate the start of a new function

• To show the hierarchy of code blocks

• To increase the execution speed of the program

What does indexing in an array refer to?

• Increasing the size of the array

• Deleting an element from the array

• Accessing an element using its position

• Changing the value of an element

What does the 'for' loop in array processing typically do?

• It reduces the size of the array

• It accesses each element of the array sequentially

• It shuffles the elements randomly

• It deletes elements from the array

What is the result of 'SELECT * FROM table_name' in SQL?

• It deletes all records from the table

• It creates a new table

• It updates all records in the table

• It retrieves all fields from all records in the table

What is a 2D array?

• An array of arrays

• A type of function

• A database management system

• A 2-dimensional graphical representation

Why is it necessary to close a file after operations in programming?

• To save changes to the file

• To delete the file

• To rename the file

• To prevent data corruption and ensure all data is written