PCPP Python Design Patterns Quiz

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2. Which pattern allows an object to alter its behavior when its internal state changes?

State

Strategy

Template Method

Visitor

3. The Memento pattern is used to capture and externalize an object's internal state without violating encapsulation. True or False?

True

False

4. What is the primary purpose of the Bridge pattern?

Decouple an abstraction from its implementation

Create objects without specifying exact classes

Simplify complex subsystems

Define a one-to-many dependency

5. The Proxy pattern is used to provide a surrogate or placeholder for another object. True or False?

True

False

6. Which pattern provides a way to access elements of a collection sequentially without exposing its underlying representation?

Iterator

Visitor

Memento

State

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8. What does the Composite pattern allow you to do?

Compose objects into tree structures to represent part-whole hierarchies

Encapsulate requests as objects

Provide a way to access elements sequentially

Define interactions between objects

9. The Chain of Responsibility pattern is a behavioral pattern. True or False?

True

False

10. Which creational pattern creates objects by copying an existing object rather than creating from scratch?

Prototype

Singleton

Abstract Factory

Factory Method

11. Which design pattern restricts a class to have only one instance and provides a global point of access to it?

Singleton

Factory

Observer

Prototype

12. What is the main goal of the Template Method pattern?

Define the skeleton of an algorithm in a base class

Create objects without specifying exact classes

Convert one interface to another

Reduce coupling between classes

13. The Facade pattern provides a unified, simplified interface to a set of interfaces in a subsystem. True or False?

True

False

14. Which pattern defines a one-to-many dependency where when one object changes state, all dependents are notified automatically?

Observer

Mediator

Command

State

15. The Builder pattern is primarily used to construct complex objects step by step. True or False?

True

False

16. What does the Strategy pattern allow you to do?

Define a family of algorithms and make them interchangeable

Create objects without specifying exact classes

Compose objects into tree structures

Ensure a class has only one instance

17. The Adapter pattern converts the interface of one class into another that clients expect. True or False?

True

False

18. Which pattern is used to add new functionality to objects dynamically without altering their structure?

Decorator

Adapter

Bridge

Facade

19. In the Observer pattern, what are the two main roles?

Subject and Observer

Creator and Consumer

Adapter and Target

Decorator and Component

20. What is the primary purpose of the Factory pattern?

Create objects without specifying their exact classes

Share state between multiple objects

Define a skeleton for algorithms

Convert interfaces to other interfaces

PCPP Python Design Patterns Quiz

1. In Python, the ____ pattern is often implemented using the @property decorator.

2.

What first name or nickname would you like us to use?

2. Which pattern allows an object to alter its behavior when its internal state changes?

3. The Memento pattern is used to capture and externalize an object's internal state without violating encapsulation. True or False?

4. What is the primary purpose of the Bridge pattern?

5. The Proxy pattern is used to provide a surrogate or placeholder for another object. True or False?

6. Which pattern provides a way to access elements of a collection sequentially without exposing its underlying representation?

7. The ____ pattern encapsulates a request as an object, allowing parameterization and queueing of requests.

8. What does the Composite pattern allow you to do?

9. The Chain of Responsibility pattern is a behavioral pattern. True or False?

10. Which creational pattern creates objects by copying an existing object rather than creating from scratch?

11. Which design pattern restricts a class to have only one instance and provides a global point of access to it?

12. What is the main goal of the Template Method pattern?

13. The Facade pattern provides a unified, simplified interface to a set of interfaces in a subsystem. True or False?

14. Which pattern defines a one-to-many dependency where when one object changes state, all dependents are notified automatically?

15. The Builder pattern is primarily used to construct complex objects step by step. True or False?

16. What does the Strategy pattern allow you to do?

17. The Adapter pattern converts the interface of one class into another that clients expect. True or False?

18. Which pattern is used to add new functionality to objects dynamically without altering their structure?

19. In the Observer pattern, what are the two main roles?

20. What is the primary purpose of the Factory pattern?