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The Front Controller pattern presents one entry point to a Web site or service. It provides a centralized entry point that controls and manages Web request handling. It eliminates the dependency of the user on a direct resource. Suppose you wanted to get the latest version of the servlet specification. You would be better off going to a central page that presents options that change over time than bookmarking the servlet specification directly as your bookmark might get outdated if a new version of the specification is hosted in a different page.
This pattern is a presentation controller that allows the resources to change without breaking all the bookmarks to a given resource. Many sites use this. For example, Microsoft often changes the content in its MSDN library. However, there is front end for it that rarely changes. This way, you can bookmark that front-end URL and not worry about what they do behind it.
This is not a pattern for a data storage viewer. It isn't a way for you to control data retrieval. Rather, it is a steady interface to the underlying Web resources that behave as the presentation tier.
This pattern is like a travel agent. On every trip you start by stopping at the agency. You tell the agent where you want to go and she will take care of the arrangements. The actual flight, train, bus, andhotel details change between trips, but she always helps you get there.
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Which design pattern is used by the majority of web frameworks to receive and handle user requests?
front controller
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Where are L1 and R1 on a PS2 controlpad?
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Where does a xbox360 controller go?
in the front of the xbox there should be a little door that opens and inside are usb ports you plug the controller in there
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Where is the button on your Xbox to sink the controller?
It's on the front, and very small
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Where are the controller inputs on an xbox 360?
on the front of the console below the power button
How do you connect a controller to a Xbox 360?
You plug it in, in the front of the xbox. It's sort of tricky to get it in but it's not impossible, just frusterating. For a wireless controller there is a little button on the controller and another one on your xbox and you have to push them at the same time so that the controller is activated on that xbox.
What is the Model View Controller Design Pattern?
The Model-View-Controller architecture compartmentalizes the data and business logic (model) from the presentation (view) from the user action interpreter (controller). This pattern is the hardest on the exam. The idea is closely related to the recent move from two-tier to three-tier architectures. The 3 tiers in a MVC Architecture of a J2EE Application are: 1. Model - Usually JavaBeans 2. View - Usually JSPs 3. Controller - Usually Servlets This pattern is a clear functional separation of roles. It is a formalization of the data-business-presentation movement that dominated three-tier architectures over the last decade. This pattern is very abstract. It is not simply a front end to a datasource connection. This would be like an automobile. The speed of a car is affected by the accelerator pedal (Controller), the speed is shown by the speedometer (View), and the speed is determined by the engine power (Model).
