40. OCR A Level (H046-H446) SLR8 – 1.2 Introduction to programmi

What is a computer program?

• A series of statements or instructions executed sequentially

• A social media platform

• A collection of music files

• A physical component of a computer

Answer explanation

A computer program is a series of statements or instructions executed sequentially, making the correct choice the one that defines it accurately.

What pattern do most programs follow?

• They generate output without any input

• They follow a random pattern of execution

• They accept input, process data, and then produce output

• They only process data without accepting input

Answer explanation

Most programs follow the pattern of accepting input, processing data, and then producing output.

What are the three broad programming constructs?

• Sequence, Selection, and Iteration

• Addition, Subtraction, and Division

• Input, Output, and Processing

• HTML, CSS, and JavaScript

Answer explanation

The three broad programming constructs are Sequence, Selection, and Iteration. These concepts are fundamental in programming to control the flow of execution.

What does the sequence construct mean?

• Skipping certain instructions

• Executing instructions based on a condition

• Repeating a block of code multiple times

• Executing one instruction after another in order

Answer explanation

The sequence construct means executing one instruction after another in order.

What is the first typical selection construct you learn about?

• If statement

• For loop

• While loop

• Do until loop

Answer explanation

The first typical selection construct you learn about is the If statement, which allows you to make decisions based on conditions.

What type of loop is a for loop?

• Condition-controlled loop

• Selection-controlled loop

• Sequence-controlled loop

• Counter-controlled loop

Answer explanation

A for loop is a counter-controlled loop where the loop iterates a specific number of times based on a counter variable.

What is a while loop known as?

• Selection-controlled loop

• Counter-controlled loop

• Sequence-controlled loop

• Condition-controlled loop

Answer explanation

A while loop is known as a condition-controlled loop because it continues to execute as long as the specified condition is true.

What distinguishes a do until loop from a while loop?

• It is used for counter-controlled iterations

• It can only execute once

• It does not allow looping

• It checks the condition at the end of the loop

Answer explanation

A do until loop checks the condition at the end of the loop, while a while loop checks it at the beginning.

What is nesting in programming?

• Creating a loop within a loop

• Storing data in a structured format

• Putting one statement inside another

• Writing code in multiple programming languages

Answer explanation

Nesting in programming refers to putting one statement inside another, such as a loop within a loop or a conditional statement within another conditional statement.

What are learners not expected to memorize for exams?

• The history of programming languages

• The concept of program flow

• The names of all programming constructs

• The syntax of the pseudocode

Answer explanation

Learners are not expected to memorize the syntax of the pseudocode for exams. Understanding the concept is more important than memorizing specific syntax details.