BE1 - Structural Design Pattern

What is the main purpose of the Adapter design pattern?

• To provide a simplified interface for complex subsystems
• To allow objects with incompatible interfaces to collaborate
• To decouple abstraction from implementation
• To efficiently share objects across multiple contexts

Which design pattern is used to separate the abstraction and implementation into two separate class hierarchies?

• Adapter
• Bridge
• Composite
• Decorator

In the Bridge design pattern, the abstraction and implementation are connected using:

• Inheritance
• Composition
• Aggregation
• Encapsulation

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

• Adapter
• Bridge
• Composite
• Decorator

What is the main purpose of the Decorator design pattern?

• To provide a simplified interface for complex subsystems
• To allow objects with incompatible interfaces to collaborate
• To separate the abstraction and implementation into two separate class hierarchies
• To add behavior dynamically to an object

In the Facade design pattern, the facade class acts as a?

• Proxy
• Decorator
• Adapter
• Simplified interface to a complex subsystem

Which design pattern is used to minimize memory usage by sharing common state between multiple objects?

• Adapter
• Bridge
• Composite
• Flyweight

The Flyweight design pattern is often used in scenarios where?

• Objects with incompatible interfaces need to collaborate
• Abstraction and implementation need to be separated
• Large numbers of similar objects need to be created
• Part-whole hierarchies need to be represented

What is the main purpose of the Proxy design pattern?

• To provide a simplified interface for complex subsystems
• To allow objects with incompatible interfaces to collaborate
• To represent part-whole hierarchies
• To control access to an object

In the Adapter design pattern, the adapter class ?

• Acts as a simplified interface to a complex subsystem
• Adds behavior dynamically to an object
• Connects two incompatible interfaces
• Represents part-whole hierarchies