Question 1

What is the main reason for subclassing a built-in class?

Options :

A : It allows you to override all the parent-s methods.

B : It allows you to get a new class that can enrich parent-s methods.

C : It allows you to avoid any intellectual rights issues.

D : It allows you to make the code execution faster.

Answer: B

Question 2

The reason for implementing abstract classes is that...

Options :

A : abstract classes set requirements regarding methods that must be implemented by their subclasses.

B : abstract classes increase the security of your code.

C : abstract classes help you keep you code clean, short and self-documenting.

D : abstract classes decrease the code execution time.

Answer: A

Question 3

Assume that the following piece of code has been successfully executed:

class Vehicle:

fleet = 0

def __init__(self, category=None):

self.category = category if category else 'vehicle'

Vehicle.fleet += 1

def __str__(self):

return self.category

class LandVehicle(Vehicle):

def __str__(self):

return super().__str__() + ': land'

class AirVehicle(Vehicle):

def __str__(self):

return super().__str__() + ': air'

What is the expected output of the following piece of code?

veh1 = Vehicle()

veh2 = LandVehicle()

veh3 = AirVehicle()

print(veh1)

print(veh2)

print(veh3)

Options :

A :

vehicle

B :

vehicle

: land

: air

C :

vehicle

vehicle: land

vehicle: air

D : This code will raise the SyntaxError exception.

Answer: C

Question 4

You are developing a client-server application in Python using sockets. The server sends data to the client using the sendall() method, and the client receives the data using the recv() method. Which statement accurately describes the behavior of the recv() method in this scenario?

Options :

A : The recv() method must be called before the sendall() method to establish the connection properly.

B : The recv() method returns a dictionary containing the data sent by the server, where the keys represent the sequence numbers of the data packets.

C : The recv() method returns a list containing all the data sent by the server, preserving the order of transmission.

D : The recv() method will block until it receives all the data sent by the server or until an error occurs.

Answer: D

Question 5

INI files are configuration files that typically store settings and configurations for various applications. They commonly use interpolation syntax to insert dynamic values into the file. Which of the following expressions is the correct interpolation syntax used in INI files?

Options :

A : %(localhost)%

B : %(localhost)

C : %(localhost)s

D : $localhost

Answer: C

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