Question 1

Which design pattern is used to represent part-whole hierarchies of objects?

Options :

A : Observer

B : Composite

C : Proxy

D : Adapter

Answer: B

Question 2

Which design pattern is used to separate the responsibilities of an object or class into distinct parts?

Options :

A : Composite

B : Proxy

C : Decorator

D : Observer

Answer: C

Question 3

What is a socket in the context of network programming?

Options :

A : A combination of an IP address and a port number.

B : A hardware device used for data transmission.

C : A method used to establish a network connection.

D : A software program running on a remote server.

Answer: A

Question 4

Which method is used to commit the changes made in a transaction in Python with MySQL?

Options :

A : conn.commit()

B : conn.rollback()

C : cursor.rollback()

D : cursor.commit()

Answer: A

Question 5

Which module can be used to create standalone executable files from Python scripts?

Options :

A : pyinstaller

B : distutils

C : setuptools

D : cx_Freeze

Answer: A