Encapsulate a request as an object, there by letting you parametrize clients with different requests, queue or log requests, and support undoable operation.

Related MCQs

• In a client-server model where ‘n clients’ are sending request or receiving data from ‘m servers’. There are ‘x intermediate servers’ present which re-route the request (coming from Clients) to appropriate server based on the type of request. The intermediate server also returns the response to the client user-interface. What is the role of the intermediate server here?
• Define a family of algorithms, encapsulate each one, and make them interchangeable. It lets the algorithm vary independently from clients that use it.
• ____________ object which receives request from UI layer object and then controls/coordinates with other object.
• It is also known as Virtual Constructor and it is used to define an interface for creating an object but letting the subclass decide which class to instantiate, this pattern is :
• A pattern that is intended to provide a means to define a family of algorithms and encapsulate each one as an object for interchangeable use
• Use ___________ when you need to define a family of algorithms, encapsulate each one, and make them interchangeable.
• You want all the clients using class A to use the same instance of class A, what should you do to achieve this goal?
• Which design pattern suggests multiple classes through which request is passed and multiple but only relevant classes carry out operations on the request?
• Which design pattern suggest multiple classes through which request is passed and multiple but only relevant classes carry out operations on the request?
• Which Design Pattern should you use when more than one object may handle a request, and the handler isn't known a priori. The handler should be ascertained automatically.