In the State Pattern, what does the 'Context' class represent?
The concrete classes implementing different states.
The mechanism for transitioning between states.
The interface or abstract class defining state-specific actions.
The class that holds the current state of the object.
How does the Prototype Pattern contribute to code flexibility?
It simplifies the process of unit testing.
It allows you to define new object types at runtime.
It promotes loose coupling by reducing dependencies between classes.
It eliminates the need for inheritance.
What is the primary purpose of the Proxy Pattern in software design?
To control access to an object, potentially restricting its use.
To define a family of algorithms and encapsulate each one.
To allow objects to be notified of changes in other objects.
To provide a simplified interface to a complex subsystem.
Which real-world scenario is well-suited for the Composite pattern?
Managing a database connection pool.
Creating a thread-safe singleton object.
Implementing an undo/redo mechanism.
Representing a file system with directories and files.
Which of these real-world scenarios could benefit from applying the Iterator Pattern?
Representing a menu structure in a graphical user interface.
Processing a stream of data from a sensor network.
Navigating through a playlist of songs in a music player.
All of the above.
Which of these scenarios best exemplifies the use of the Prototype Pattern?
Implementing undo/redo functionality in a text editor.
Creating multiple instances of game characters with slightly varying attributes.
Logging user actions in a system.
Managing the state of a traffic light system.
In a vending machine simulation using the State Pattern, what would likely be a 'State'?
The number of coins inserted
The 'Out of Stock' condition
The price of a product
The act of dispensing a product
What is a key difference between a deep copy and a shallow copy in the context of the Prototype Pattern?
A shallow copy duplicates references, while a deep copy creates new instances for nested objects.
A shallow copy is preferred when you need to maintain object immutability.
A deep copy is only applicable to immutable objects.
A deep copy is faster to execute than a shallow copy.
How does the Flyweight pattern typically handle 'extrinsic state'?
It passes it as an argument to methods of the Flyweight object.
It encapsulates extrinsic state within a separate 'Context' object.
It eliminates the need for extrinsic state altogether.
It stores it within the Flyweight object itself.
In a language like Java, how is object cloning often achieved within the Prototype Pattern?
By using the Object.assign() method.
Object.assign()
By directly copying object properties.
By implementing the Cloneable interface.
Cloneable
By using the spread operator.
spread