Functions in Programming: A Comprehensive Guide for Beginners

Question 1

Which data type is not valid as a function parameter in Python?

Accepted Answer

Function

Answer

Integer

Answer

String

Answer

List

Question 2

In Python, what is the correct syntax to define a function?

Accepted Answer

def <function_name>(<parameters>):

Answer

function ():

Answer

public <function_name>(<parameters>):

Answer

set <function_name>(<parameters>):

Question 3

What is the primary purpose of a return statement within a function?

Accepted Answer

To exit the function and return control to the calling code.

Answer

To store a value for later use in the function.

Answer

To pass arguments to the calling code.

Answer

To declare a variable within the function.

Question 4

What is the distinction between a parameter and an argument in a function?

Accepted Answer

Parameters are defined in the function definition, while arguments are passed during the function call.

Answer

Arguments are defined in the function definition, while parameters are passed during the function call.

Answer

Parameters and arguments are interchangeable terms.

Answer

There is no difference between parameters and arguments.

Question 5

Can a function call itself?

Accepted Answer

Yes, if it is declared as a recursive function.

Answer

No, a function cannot call itself.

Answer

Only if it is declared as a static function.

Answer

Only if it is declared as a private function.

Question 6

In Python, what is the default return value of a function that does not explicitly return a value?

Accepted Answer

None

Answer

0

Answer

False

Answer

The function name

Question 7

What is a best practice for naming functions?

Accepted Answer

Use descriptive and meaningful names.

Answer

Use short and ambiguous names.

Answer

Use names that match the internal implementation.

Answer

Use names that are easy to remember.

Question 8

What is the difference between local and global variables in a Python function?

Accepted Answer

Local variables are accessible only within the function, while global variables are accessible from anywhere in the program.

Answer

Global variables are accessible only within the function, while local variables are accessible from anywhere in the program.

Answer

Local and global variables are the same thing.

Answer

There is no difference between local and global variables.

Question 9

In Python, which syntax correctly defines a function?

Accepted Answer

def function_name(parameters):

Answer

function function_name(parameters) -> type:

Answer

def function_name = lambda parameters: expression

Answer

function function_name(parameters): return expression

Question 10

What is the primary purpose of passing arguments to a function?

Accepted Answer

To provide input data for the function to process

Answer

To specify the expected output type of the function

Answer

To control the order of execution within the function

Answer

To define the name of the function

Question 11

Which of the following is NOT an advantage of using functions in programming?

Accepted Answer

Reduced memory consumption

Answer

Code reusability

Answer

Improved code modularity

Answer

Enhanced code readability

Question 12

What key difference distinguishes a function call from a function definition?

Accepted Answer

A function call executes the function, while a function definition creates it

Answer

A function definition can accept parameters, but a function call cannot

Answer

A function call returns a value, while a function definition does not

Answer

There is no difference between a function call and a function definition

Question 13

What is the purpose of using the 'pass' keyword in Python?

Accepted Answer

To indicate an empty function body that will be implemented later

Answer

To return a null value from a function

Answer

To define a function parameter with a default value

Answer

To control the flow of execution within a function

Question 14

What is the output of the following Python code?

def square(x):
    return x * x

result = square(5)
print(result)

Accepted Answer

25

Answer

5

Answer

10

Answer

Error

Question 15

What is the primary difference between a recursive and an iterative function?

Accepted Answer

A recursive function calls itself, while an iterative function does not

Answer

An iterative function uses loops, while a recursive function does not

Answer

A recursive function is always more efficient than an iterative function

Answer

There is no difference between a recursive function and an iterative function

Question 16

What is the primary purpose of defining functions in programming?

Accepted Answer

To enhance code reusability and modularity

Answer

To improve code performance

Answer

To manage program flow more effectively

Answer

To store temporary data

Question 17

Which of the following is NOT a defining characteristic of a function?

Accepted Answer

It always returns a value

Answer

It performs a specific task

Answer

It can be invoked multiple times

Answer

It is independent of other parts of the program

Question 18

What is the process of providing data to a function called?

Accepted Answer

Argument passing

Answer

Invoking the function

Answer

Parameter setting

Answer

Value assignment

Question 19

Which of the following is a valid syntax for defining a function in Python?

Accepted Answer

def my_function(x, y):

Answer

my_function = function(x, y):

Answer

function my_function(x, y):

Answer

define my_function(x, y):

Question 20

What is the role of the 'return' statement in a function?

Accepted Answer

To specify the output of the function

Answer

To terminate the function

Answer

To pass arguments to the function

Answer

To call another function

Question 21

Which of the following is a valid syntax for invoking a function in JavaScript?

Accepted Answer

functionName();

Answer

call functionName();

Answer

invoke functionName();

Answer

run functionName();

Question 22

Which of the following is NOT a benefit of using functions in programming?

Accepted Answer

Increases code duplication

Answer

Reduces development time

Answer

Improves code reusability

Answer

Enhances code readability

Question 23

What is the primary purpose of passing arguments to a function?

Accepted Answer

To provide data for the function to process

Answer

To specify the function's name

Answer

To define the function's return type

Answer

To determine the function's scope

Question 24

Which of the following data types cannot be returned by a function in Python?

Accepted Answer

Array

Answer

Integer

Answer

Boolean

Answer

String

Question 25

What is the key difference between a function definition and a function call in programming?

Accepted Answer

A definition declares the function, while a call executes it

Answer

A definition uses parentheses, while a call does not

Answer

A definition returns a value, while a call does not

Question 26

Which of the following is a valid way to define a function in JavaScript?

Accepted Answer

function functionName() {}

Answer

functionName() {}

Answer

def functionName() {}

Answer

func functionName() {}

Question 27

What is the main purpose of the 'return' statement in a function?

Accepted Answer

To end the function and send back a value

Answer

To define the function's parameters

Answer

To call another function

Answer

To execute a specific block of code

Question 28

Which of the following is an example of a user-defined function?

Accepted Answer

def myFunction(x, y):

Answer

print()

Answer

input()

Answer

range()

Question 29

What might happen if a function is called without providing the correct number of arguments?

Accepted Answer

An error or exception may occur

Answer

The function will return a default value

Answer

The function will prompt the user for the missing arguments

Answer

The function will execute normally

Question 30

Which of the following is NOT a characteristic of a well-designed function?

Accepted Answer

Contains multiple exit points

Answer

Uses meaningful variable and function names

Answer

Is easy to understand

Answer

Performs a single, well-defined task

Question 31

What is the main difference between a local and a global variable in programming?

Accepted Answer

Local variables are only accessible within their defining function, while global variables can be accessed throughout the program

Answer

Local variables are stored in memory, while global variables are stored on disk