Creational Design Patterns Quiz

Q1. Which of the following is a creational design pattern? Singleton
Observer
Decorator
Strategy

Q2. What is the main purpose of the Builder pattern? Simplify complex object creation
Separate interface from implementation
Allow subclasses to alter behavior
Dynamically attach responsibilities to objects

Q3. Which pattern ensures that a class has only one instance and provides a global point of access? Prototype
Abstract Factory
Singleton
Factory Method

Q4. In the Factory Method pattern, which component typically decides which class to instantiate? The creator or factory class
The client directly
A configuration file
A third-party library

Q5. What is the difference between the Abstract Factory and Factory Method patterns? Abstract Factory creates one product, while Factory Method creates multiple products
Abstract Factory uses multiple factory methods internally, while Factory Method is a single method
There is no difference
Factory Method is always implemented using inheritance, while Abstract Factory cannot be

Q6. In the Prototype pattern, how are new objects typically created? By cloning an existing instance
By reflection-based instantiation
By a chain of creation methods
By using a pool of pre-created objects

Q7. Which pattern allows the construction of complex objects step by step and separates the object construction from its representation? Factory Method
Builder
Abstract Factory
Singleton

Q8. When using the Singleton pattern, which of the following might be a potential downside? Overly simplified object creation
Decreased testability or hidden dependencies
Difficulties in instantiating multiple related objects
Excessive memory usage because of multiple instances

Q9. In a large-scale application, why might the Abstract Factory pattern be preferred over multiple separate Factory Methods? It ensures the client has no dependency on any interfaces
It simplifies adding new, related product families
It guarantees thread-safe object creation
It has better performance than other creational patterns

Q10. What is a potential drawback of the Builder pattern in terms of design complexity? It forces you to create a new Builder subclass for every type of product
It ties you into a single product family
It always requires reflection to instantiate objects
It can lead to a large number of small, separate builder classes

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