WorksheetsPost-Test CoR AdvProg
Total questions: 10
Worksheet time: 5mins
Which of the following patterns allows an object to notify interested listeners of changes to its state?
Chain of Responsibility
Strategy
Observer
Command
Template
Which of the following patterns allows multiple objects an opportunity to process a request without guaranteeing that any of them must process it?
Chain of Responsibility
Strategy
Observer
Command
Which of the following is an object pattern that encapsulates interchangeable algorithms in objects so the algorithm can vary independently of the classes that use it?
Chain of Responsibility
Strategy
Observer
Command
What is the main purpose of the strategy pattern?
To provide a way to change the behavior of a class at runtime
To define a fixed set of steps that must be followed by subclasses
To create reusable code by encapsulating algorithms
To promote loose coupling between classes
How does the strategy pattern make the code more flexible and adaptable to change?
By encapsulating algorithms in reusable code
By promoting loose coupling between classes
By allowing for dynamic changes in the algorithm used at runtime
By defining a fixed set of steps that must be followed by subclasses
In the push model, the subject sends the observers updates without being prompted, while in the pull model, the observers request updates from the subject.
True
False
Which of these is the purpose of the Chain of Responsibility pattern?
To allow a request to be processed by a series of handlers
To define a one-to-many relationship between objects
To provide a way to change the behavior of a class at runtime
To promote loose coupling between classes
Chain of Responsibility pattern might be useful when you need to maintain a list of subscribers to an event and notify them of updates.
True
False
How does the Chain of Responsibility pattern work?
By passing a request through a chain of objects until one of them handles it
By allowing objects to subscribe to receive events
By providing a way for objects to be notified of changes in another object
By encapsulating algorithms in reusable code
Observer pattern promote loose coupling between objects by allowing objects to communicate without knowing the details of each other’s implementation.
True
False
