Diff Primary key and Unique keyDiff Interface and Abstract classMagic TableWhat is Collectionwhat is hash table?Generic ClassIndex (Clusterd and non-Clustered)Clusterd index on which column?Diff between SP and Functioncan i call SP using function?What is CTE?Design Pattern?What is Shadwing?What is IEnumerable and IQueryable?What is singleton class?ASP.Net Page LifeCyle?Error Handling in SQL?What is #temp and ##temp in sql?difference between AsP.net and MVC?Why we use Webservice?Which protocol use Webservice?Diff Between TCP-IP and SOAP?what are state management techniques?Session and Cokies?what is dictionary collection?what is caching?Different Types of Caching? What is delegate?What is Reflection?Diff between Constant and Readonly?What is Polymorphism?Strongly Type in class,Linq?What is constraint?explain EnableViewState?virtual, sealed, override, and abstract?Can Datetime Null?What is Strongly Type?Threading?How many Machine and Web Cofig ?Example of Interface?