Functions and Modular Code Programming Quiz

1. What is variable shadowing?

A variable declared in an inner scope with the same name as an outer scope variable

A variable that cannot be accessed

A global variable used in a function

A variable that is never initialized

2. What is the main advantage of using default parameters in functions?

Reduces function size

Allows functions to be called with fewer arguments

Improves execution speed

Eliminates the need for testing

3. True or False: A function must always return a value.

True

False

4. Why is it important to name functions descriptively?

It makes code execute faster

It improves code readability and maintainability

It reduces memory usage

It prevents compilation errors

5. What is a higher-order function?

A function with many parameters

A function that takes or returns another function

A function with complex logic

A function defined inside another function

6. In pass-by-reference, what does the function receive?

A copy of the data

A memory address pointing to the original data

A new variable

A constant value

7. What does DRY stand for in programming?

Dynamic Runtime Yield

Don't Repeat Yourself

Data Retrieval Yield

Debug Run Yield

8. Which is NOT a benefit of modular code?

Easier testing and debugging

Better code reusability

Guaranteed faster execution

Improved readability

9. What is the primary benefit of breaking code into functions?

Reusability and maintainability

Faster execution speed

Reduced memory usage

Automatic error correction

Submit

11. What is the purpose of a return statement?

To exit the program

To send a value back to the caller

To declare a variable

To loop through code

12. Which practice improves code modularity?

Writing all code in a single function

Using global variables everywhere

Separating concerns into smaller, focused functions

Avoiding function parameters

13. What is a side effect in a function?

The return value of the function

Any observable change outside the function's scope

An error thrown by the function

A parameter passed to the function

14. In recursion, what prevents infinite loops?

The function call stack

A base case that stops recursion

Memory allocation limits

The compiler optimization

15. What is a pure function?

A function with no parameters

A function that produces the same output for the same input without side effects

A function that returns nothing

A function defined at the global level

16. Which scope allows a variable to be accessed throughout an entire program?

Local scope

Global scope

Function scope

Block scope

17. What does pass-by-value mean?

The function receives a copy of the argument

The function modifies the original variable

The function receives a reference to the argument

The function cannot access the argument

18. In a function call, what is an argument?

The variable name in the function definition

The actual value passed to the function

The return type of the function

The function's local variable