Senior .NET Developer Interview Questions and Answers for Freshers

Extension methods allow adding new methods to existing types, value types store data directly, reference types store references to data, migration in code-first approach involves updating database schema, Configure method in .NET Core configures services and middleware.

• Extension methods are static methods that can be called as if they were instance methods on an existing type.

• Value types store data directly on the stack, while reference types store references to data on the h...read more

The main difference is that .NET Core is open-source and cross-platform while .NET Framework is Windows-only.

• Both are used for building Windows applications, but .NET Core can also be used for web and cloud applications.

• .NET Core has a smaller runtime and can be deployed as a single executable file.

• .NET Core supports Docker containers and can be used on Linux and macOS.

• .NET Framework has a larger runtime and requires installation on the target machine.

• Some libraries and APIs ...read more

PUT is used to update or replace an existing resource, PATCH is used to partially update a resource, and POST is used to create a new resource.

• PUT is idempotent, meaning multiple identical requests will have the same effect as a single request.

• PATCH is not necessarily idempotent and is used to make partial updates to a resource.

• POST is used to create a new resource on the server.

You can store two values in the same HTML tag by using data attributes or hidden inputs.

• Use data attributes to store additional data in HTML tags, such as

• Use hidden inputs to store values that are not displayed on the page, such as

Dependency Injection is a design pattern that allows objects to receive dependencies rather than creating them internally.

• DI is a way to achieve loose coupling between objects

• It helps in creating more testable and maintainable code

• DI can be implemented using constructor injection, property injection, or method injection

• Example: Instead of creating a database connection object inside a class, we can inject it from outside

• Example: ASP.NET Core uses DI to inject services into co...read more

Drop, delete, and truncate are SQL commands used to remove data from a table, but they have different functionalities.

• DROP: Used to remove an entire table or database

• DELETE: Used to remove specific rows from a table

• TRUNCATE: Used to remove all rows from a table, but keeps the table structure

Routing in MVC is the process of mapping URLs to controller actions.

• Routing determines which controller and action to execute based on the URL requested

• Routes are defined in the RouteConfig.cs file in MVC applications

• Routes can include parameters that are passed to the controller action

• Routes can be customized using route constraints and route attributes

Stored procedures are precompiled SQL queries stored in the database, while functions are reusable blocks of code that return a value.

• Stored procedures are compiled and stored in the database for faster execution.

• Functions are reusable blocks of code that can be called within SQL queries.

• Stored procedures can perform multiple operations and transactions, while functions are typically used for calculations or data manipulation.

• Stored procedures can be used to update, insert, o...read more