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Q. What are Application Pages in SharePoint? Ans :  Unlike site pages (for example, default.aspx), a custom application page is deployed once per Web server and cannot be customized on a site-by-site basis. Application pages are based in the virtual _layouts directory. In addition, they are compiled into a single assembly DLL. A good example of an Application Page is the default Site Settings page: every site has one, and it's not customizable on a per site basis (although the contents can be different for sites). With application pages, you can also add inline code. See more at Application Page Vs Site Page Q. Which is Better a UserControl or WebPart? Ans:  Advantages of Using User Control are : Advantages of User control There are three primary advantages to user controls when dealing with SharePoint. They are: familiarity, reusability, and development speed. *Familiarity: One of the keys to development is managing the degree of change that the team is put through as it tra...

Q. What are WebParts? Ans.  Web Parts are self-contained packages of user interface that can be dropped onto a SharePoint Web Part page to provide discrete set of functionality to the users. They can simply be described as re-usable Code units. Q. What are Features? Ans.  Features represent a set of functionality (code) that can be activated and de-activated at various levels in SharePoint. Using Features, you can do everything from adding a link to the Site Settings page to creating a complete fully functioning Project suite that can be added to any SharePoint site. Developers can scope feature to the following level - . Web . Site . WebApplication . Farm Q. What are Solutions? Ans.  Solutions are the container packages for Features. Solution basically, is a cabinet (.cab) file with extension .wsp which contains various components needed to be deployed(features, webparts, custom forms etc) along with files that describe some important metadata about those Components. On...