C#:- How to prevent a class from being Inherited? What is Abstraction? What is Encapsulation? What is Polymorphism and what are its types? What is Method Overloading? In how many ways a method can be overloaded? What is the difference between Overloading and Overriding? What is the difference between Method Overriding and Method Hiding? What is the difference between an Abstract class and an Interface (atleast 4)? Do Interface can have a Constructor? Can you create an instance of an Abstract class or an Interface? What is the difference between “String” and “StringBuilder”? When to use what? Explain Generics in C#? When and why to use them? Can we execute multiple Catch blocks? What is the difference between “throw ex” and “throw”? What is the difference between IEnumerable and IQueryable in C#? Why to use IQueryable in sql queries? What is the difference between “out” and “ref” parameters? When to use Private constructor? What are Multicast Delegates? What are the differences between Events and Delegates? What is the difference between “Readonly” and “Constant” variables? What is Garbage Collection(GC)? What are Generations in garbage collection? What is the difference between “Dispose” and “Finalize”? Explain Multithreading? What is the difference between Threads and Tasks? What is meant by managed and unmanaged code? What is multi-tasking? What is prototype design pattern? What is builder design pattern? What is adapter design pattern? What is bridge design pattern? What is composite design pattern? What is decorator design pattern? What is facade design pattern? What is flyweight design pattern? What is proxy design pattern? SQL:- What is a Constraint is SQL? What are its types. What are Triggers and types of triggers? What is the difference between Having clause and Where clause? What is Self-Join? What are Indexes in SQL Server? What is Clustered index? What is Non-Clustered index? What is the difference between Stored Procedure and Functions? What is CTE in SQL Server? How will improvre performace? How will check which query causing issue in SQL? How to use query profiler in SQl Server Delete Distinct records from the table. Calculate seond highest salary. MVC + .netCore + EF What are Filters and their types in MVC? What is Authentication and Authorization in ASP.NET MVC? What are the types of Authentication in ASP.NET MVC? What is Output Caching in MVC? How to implement it? What is the difference between ViewData, ViewBag & TempData? How can we pass the data from controller to view in MVC? What are Areas in MVC? What is Bundling and Minification in MVC? How Entity Framework works? OR How to setup EF? What is meant by DBContext and DBSet? What are the advantages of .NET Core over .NET framework? What is the role of ConfigureServices method? What is the role of Configure method? What is Dependency Injection? Why to use Dependency Injection? OR What problems does Dependency Injection solve? How can we inject the dependency into the controller? What are the types of Dependency Injection? What is AddSingleton, AddScoped and AddTransient method? What is Middleware in ASP.NET Core? How ASP.NET Core Middleware is different from HttpModule? What is custom middleware? How to add custom middleware in ASP.NET Core? What is Run(), Use() and Map() method? What is Kestrel? What is Routing? Types What is Cross-Origin Requests (CORS) in ASP.NET Core? Why CORS restriction is required? How to fix CORS error? WEB API:- What is Rest and Restful? What are HTTP verbs or HTTP methods? How to consume Web API from a .NET MVC application? What is JWT Authentication? What are the parts of JWT token? What are main Return Types supported in Web API?
