Programming Basics

1. What is the correct file extension for a Python file?

• A. .java
• B. .py ✓
• C. .cpp
• D. .js

💡 Python files use the .py extension. For example: hello.py

2. Which data type stores whole numbers?

• A. Float
• B. String
• C. Boolean
• D. Integer ✓

💡 An integer (int) stores whole numbers without decimal points, like 1, 42, or -7.

3. Which symbol is used for single-line comments in Python?

• A. //
• B. /*
• C. --
• D. # ✓

💡 In Python, the # symbol is used to write single-line comments.

4. What is a variable in programming?

• A. A fixed value
• B. A type of loop
• C. A named storage location for data ✓
• D. A programming language

💡 A variable is a named container that stores data which can change during program execution.

5. What does "bug" mean in programming?

• A. A feature
• B. A type of loop
• C. An error or flaw in code ✓
• D. A programming language

💡 A bug is an error, flaw, or unexpected behavior in a program that causes it to produce incorrect results.

6. Which of these is a programming language?

• A. HTML
• B. CSS
• C. Python ✓
• D. HTTP

💡 Python is a programming language. HTML and CSS are markup/styling languages, HTTP is a protocol.

7. What is the output of: print("Hello, World!")?

• A. Hello World
• B. Hello, World! ✓
• C. hello, world!
• D. "Hello, World!"

💡 The print() function outputs exactly what is inside the quotes: Hello, World!

8. What does CPU stand for?

• A. Central Processing Unit ✓
• B. Computer Personal Unit
• C. Central Program Utility
• D. Core Processing Unit

💡 CPU stands for Central Processing Unit — the primary component that executes instructions in a computer.

9. What does HTML stand for?

• A. Hyper Text Markup Language ✓
• B. High Tech Modern Language
• C. Hyper Transfer Markup Language
• D. Home Tool Markup Language

💡 HTML stands for HyperText Markup Language — the standard language for creating web pages.

10. Which of these is used to store a list of items in Python?

• A. Dictionary
• B. Tuple
• C. String
• D. List ✓

💡 A list in Python stores multiple items in a single variable: my_list = [1, 2, 3].