Question 1

What is the purpose of classes in object-oriented programming?

Options :

A : To enable code reusability

B : To define behaviors and properties

C : To create objects

D : To encapsulate data and functions

Answer: D

Question 2

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

Options :

A : Global variables can be accessed anywhere in the program, while local variables are only accessible within the function where they are defined.

B : Global variables are immutable, while local variables are mutable.

C : Global variables are defined inside functions, while local variables are defined outside functions.

D : Global variables can only store strings, while local variables can store any data type.

Answer: A

Question 3

What does the count() data aggregate function do?

Options :

A : Sorts the dataset in ascending order

B : Returns the length of the dataset

C : Calculates the sum of all elements in a dataset

D : Finds the frequency of a specific value in a dataset

Answer: B

Question 4

What does the COUNT() function in SQL do?

Options :

A : Calculates the average of a column

B : Counts the number of rows in a table

C : Returns the total sum of a column

D : Counts the number of distinct values in a column

Answer: B

Question 5

Which keyword is used to import modules in Python?

Options :

A : import

B : for

C : if

D : def

Answer: A