This pattern is used to reduce the coupling between the presentation and business-logic tier. It provides a proxy to the façade from where one could call the business classes or DAO class. This pattern can be used with Service Locator pattern for improving performance.

• What is the difference between JSP and JSF?
• What are tags in JSF ?
• What is JSF life cycle and its phases?
• What is Render Kit in JSF?
• What design patterns could be used to manage security?

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