Question 1

Which of the following best describes the concept of single inheritance in object-oriented programming (OOP)?

Options :

A : Single inheritance is a mechanism that allows a class to inherit properties and behaviors from multiple base classes.

B : Single inheritance is the process of creating objects from a class and reusing its attributes and methods.

C : Single inheritance is the ability of a class to inherit properties and behaviors from its immediate parent class.

D : Single inheritance is the process of hiding certain attributes and methods of a class from its derived classes.

Answer: C

Question 2

Consider the following Python code snippet:

1. class Meta(type):

2. def __new__(cls, name, bases, attrs):

3. new_class = super().__new__(cls, name, bases, attrs)

4. new_class.instances = 0

5. original_init = new_class.__init__

6.

7. def new_init(self, *args, **kwargs):

8. new_class.instances += 1

9. original_init(self, *args, **kwargs)

10.

11. new_class.__init__ = new_init

12. return new_class

13.

14.

15. class MyClass(metaclass=Meta):

16. pass

17.

18.

19. a = MyClass()

20. b = MyClass()

21. c = MyClass()

What will be the output of print(MyClass.instances)?

Options :

A : 0

B : An AttributeError will be raised.

C : 1

D : 3

Answer: D

Question 3

You are building a Python application that needs to send an HTTP POST request with JSON data to a remote server. Which code snippet correctly demonstrates the usage of the requests module to accomplish this task?

Options :

A : import requests

url = "https://api.example.com/data"

data = {"key": "value"}

response = requests.get(url, json=data)

B : import requests

url = "https://api.example.com/data"

data = {"key": "value"}

response = requests.patch(url, json=data)

C : import requests

url = "https://api.example.com/data"

data = {"key": "value"}

response = requests.put(url, json=data)

D : import requests

url = "https://api.example.com/data"

data = {"key": "value"}

response = requests.post(url, json=data)

Answer: D

Question 4

Which of the following expressions is the correct interpolation syntax used in INI files?

Options :

A :

%(localhost)

B : %(localhost)s

C : %(localhost)%

D : $localhost

Answer: B

Question 5

Consider a software application for managing a social media platform. You have two classes, User and Post. Which of the following statements accurately represents the "is a" and "has a" relationships between these classes?

Options :

A : The Post class is a subclass of the User class.

B : The Post class has a reference to the User class.

C : The User class is a subclass of the Post class.

D : The User class has a reference to the Post class.

Answer: D

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