Master Functions: The Building Blocks of Efficient Code

Question 1

Functions in programming offer several benefits. Which of these is NOT a benefit?

Accepted Answer

Making programs more complex

Answer

Reusing code

Answer

Making code easier to read

Answer

Reducing testing time

Question 2

Which of the following is a disadvantage of using functions?

Accepted Answer

Increased complexity

Answer

Reusability

Answer

Modularity

Question 3

Which of the following is a **disadvantage** of using functions in programming?

Accepted Answer

Increased development time

Answer

Reusability

Answer

Modularity

Answer

Maintainability

Question 4

Which of the following statements about function parameters is **incorrect**?

Accepted Answer

Parameters can only be of type string or integer.

Answer

Function parameters are used to pass data to a function.

Answer

Default values can be provided for parameters.

Answer

Parameters are optional during function invocation.

Question 5

In Python, a function is defined using which syntax?

Accepted Answer

def function_name(parameters):

Answer

func function_name(parameters):

Answer

function = function_name(parameters):

Answer

let function_name(parameters) = {}

Question 6

What is a key advantage of using functions in programming?

Accepted Answer

Code modularization and reusability

Answer

Increased code complexity

Answer

Prevention of variable name collisions

Answer

Improved program speed

Question 7

Which of the following is not a valid argument type that can be passed to a function?

Accepted Answer

An undefined variable

Answer

Another function

Answer

A list of values

Answer

A literal value (e.g., 5)

Question 8

What is the fundamental difference between a function and a method?

Accepted Answer

Methods are functions associated with specific objects

Answer

There is no difference between functions and methods

Answer

Functions are more efficient than methods

Answer

Methods are more powerful than functions

Question 9

What is the purpose of the 'pass' statement in a function?

Accepted Answer

To act as a placeholder when the function is not yet implemented

Answer

To pass arguments to the function

Answer

To terminate the execution of the function

Question 10

When naming functions, which practice is generally considered a best practice?

Accepted Answer

Using descriptive and meaningful names that reflect the function's purpose

Answer

Using names that are similar to existing functions to avoid confusion

Answer

Using cryptic and concise names to save space

Question 11

In Python class methods, what is the purpose of the 'self' parameter?

Accepted Answer

To represent the instance of the class that the method is called on

Answer

To store the return value of the method

Answer

To pass additional arguments to the method

Question 12

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

Accepted Answer

Increases program execution time

Answer

Simplifies maintenance

Answer

Enhances code readability

Question 13

Which keyword is used to define a function in Python?

Accepted Answer

def

Answer

func

Answer

declare

Answer

function

Question 14

What is the purpose of the 'return' keyword in a function?

Accepted Answer

Terminates the function and returns a value

Answer

Sets the function's name

Answer

Calls another function

Answer

Defines the function's parameters

Question 15

Consider the following function: def sum_numbers(a, b): return a + b. What is the output when calling sum_numbers(5, 10)?

Accepted Answer

15

Answer

510

Answer

Cannot be determined

Answer

105

Question 16

What is the difference between a function and a method in Python?

Accepted Answer

Methods are associated with objects, while functions are not

Answer

Functions can return multiple values, but methods cannot

Answer

Methods can be called without parentheses, but functions cannot

Question 17

Which of the following function calls is syntactically correct?

Accepted Answer

average(10, 20, 30)

Answer

average = (10, 20, 30)

Answer

average 10, 20, 30

Answer

10, 20, 30 average()

Question 18

What is the purpose of using default parameters in functions?

Accepted Answer

To provide optional values for parameters when calling the function

Answer

To make the function more efficient

Answer

To prevent the function from being called with incorrect parameters

Question 19

Which of the following is NOT a consideration when designing functions?

Accepted Answer

Ignoring the impact on code readability

Answer

Documenting the function's purpose and usage

Answer

Choosing appropriate return types

Answer

Defining clear and concise parameter names

Question 20

Which of the following Python functions returns a boolean value?

Accepted Answer

is_even()

Answer

max()

Answer

len()

Answer

abs()

Question 21

What is the primary purpose of using the 'def' keyword in Python function declarations?

Accepted Answer

It defines a new function.

Answer

It returns a value from a function.

Answer

It calls an existing function.

Question 22

Which of the following is NOT a parameter passing mechanism supported in Python?

Accepted Answer

Call by reference

Answer

Call by sharing

Answer

Call by value

Answer

Call by object reference

Question 23

What is a key advantage of using functions in Python?

Accepted Answer

They promote code reusability.

Answer

They slow down program execution.

Answer

They increase code complexity.

Question 24

What will be the output of the following Python code?

def max_number(a, b):
  if a > b:
    return a
  else:
    return b

result = max_number(5, 10)

Accepted Answer

10

Answer

Error

Answer

None

Answer

5

Question 25

What is the primary purpose of using the 'return' statement in a Python function?

Accepted Answer

It returns a value to the caller.

Answer

It terminates the execution of the function.

Answer

It passes arguments to the function.

Question 26

Which of the following is considered a good practice when naming functions in Python?

Accepted Answer

Use descriptive and meaningful names.

Answer

Use names that do not reflect the function's purpose.

Answer

Use short and cryptic names.

Answer

Use names that are difficult to remember.

Question 27

What is the key distinction between a function and a method in Python?

Accepted Answer

A method is a function that belongs to an object.

Answer

There is no difference between a function and a method in Python.

Answer

A method is a function that does not belong to an object.

Answer

A function is a method that belongs to an object.

Question 28

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

Accepted Answer

Increased memory consumption

Answer

Reduced code redundancy

Answer

Enhanced code maintainability

Answer

Improved documentation

Question 29

What is the correct syntax to define a function in Python?

Accepted Answer

def function_name(parameters):

Answer

func function_name(parameters):

Answer

define function_name(parameters):

Answer

function function_name(parameters):

Question 30

Which of the following is a valid function call in Java?

Accepted Answer

myFunction(arg1, arg2);

Answer

func myFunction(arg1, arg2);

Answer

myFunction(arg1);

Answer

myFunction(arg1, arg2)

Question 31

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

Accepted Answer

To return a value back to the caller

Answer

To define the parameters of the function

Answer

To declare the variables used in the function

Answer

To end the execution of the function

Question 32

What is the key difference between a function and a method in object-oriented programming?

Accepted Answer

Methods are associated with objects, while functions are not.

Answer

Methods are declared with the 'method' keyword, while functions are declared with the 'function' keyword.

Answer

Functions are always public, while methods can be public, private, or protected

Answer

Functions can return any type, while methods must return an object.

Question 33

Which of the following is an example of a pure function in JavaScript?

Accepted Answer

Math.PI

Answer

console.log()

Answer

setTimeout()

Answer

Math.random()

Question 34

What is the DRY principle in programming?

Accepted Answer

Don't Repeat Yourself

Answer

Define Repeatedly Yourself

Answer

Don't Run Yourself

Answer

Do Redundantly Yourself

Question 35

Which syntax correctly defines a function in Python?

Accepted Answer

def function_name(parameters):

Answer

let functionName = (parameters) => { }

Answer

functionName { }

Answer

functionName = parameters -> { }

Question 36

What is the main purpose of using functions in programming?

Accepted Answer

To encapsulate reusable code and improve program organization.

Answer

To solely define new data types.

Answer

To solely increase code execution speed.

Question 37

Which of the following is NOT a potential benefit of using functions?

Accepted Answer

Increased code complexity.

Answer

Enhanced code readability.

Answer

Reduced code duplication.

Answer

Improved program maintainability.

Question 38

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

Accepted Answer

Functions return a value, whereas procedures do not.

Answer

Functions are declared using the 'def' keyword, whereas procedures use 'proc'.

Answer

No notable difference exists between functions and procedures.

Answer

Functions can have multiple return statements, whereas procedures can only have one.

Question 39

Which of the following represents a valid function call in C++?

Accepted Answer

functionName(argument1, argument2);

Answer

functionName -> argument1, argument2

Answer

functionName { argument1, argument2 };

Answer

functionName = (argument1, argument2);

Question 40

What is the primary reason for passing arguments to a function?

Accepted Answer

To provide input data to the function.

Answer

To store the results of the function.

Answer

To declare the return type of the function.

Question 41

What is a key advantage of using recursion in functions?

Accepted Answer

It allows functions to call themselves, enabling the solving of complex problems.

Answer

It significantly enhances code execution efficiency.

Answer

It drastically reduces the overall complexity of the code.

Question 42

What is a common use case for lambda functions?

Accepted Answer

Creating anonymous functions for quick, inline processing.

Answer

Creating classes and objects.

Answer

Defining global variables in a program.

Question 43

What is the primary difference between a built-in function and a user-defined function?

Accepted Answer

Built-in functions are predefined by the programming language, whereas user-defined functions are created by the programmer.

Answer

Built-in functions cannot be modified, whereas user-defined functions can be.

Question 44

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

Accepted Answer

Increases code complexity

Answer

Enhances code readability

Answer

Encapsulates functionality

Answer

Improves code reusability

Question 45

Consider the following lambda function: sum = lambda x, y: x + y. What does sum(10, 20) evaluate to?

Accepted Answer

30

Answer

0

Answer

20

Answer

10

Question 46

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

Accepted Answer

Sends a value back to the caller

Answer

Ends the function execution

Answer

Accepts input parameters

Answer

Declares the function name

Question 47

What is the default return type of a function in Python if not explicitly specified?

Accepted Answer

None

Answer

Void

Answer

Null

Answer

Undefined

Question 48

Consider the following Python code: def my_function(): pass. What does the pass statement in this function do?

Accepted Answer

Acts as a placeholder

Answer

Returns None

Answer

Declares the function name

Answer

Ends the function execution

Question 49

Which of the following is a valid function signature in Python?

Accepted Answer

def my_function(arg1, arg2):

Answer

myFunction(arg1, arg2):

Answer

def my_function arg1, arg2:

Answer

my_function(arg1, arg2)

Question 50

What is the key distinction between a function and a method?

Accepted Answer

Methods are associated with objects, whereas functions are not

Answer

Functions can only return one value, whereas methods can return multiple

Answer

Methods can only take one parameter, whereas functions can take multiple

Question 51

What is a primary advantage of using a recursive function?

Accepted Answer

Solving problems that can be broken down into smaller subproblems

Answer

Reducing code complexity

Answer

Improving code performance