Docker is a popular containerization tool that can be used with ASP.NET Core for deployment. Docker containers encapsulate the application and its dependencies, making it easy to deploy and run consistently across different environments.

To restrict an action method to respond only to HTTP POST requests in ASP.NET Core MVC, you can decorate the method with the [HttpPost] attribute. This attribute ensures that the method can only be invoked when an HTTP POST request is made to its associated URL.

If an action within a controller with [Authorize] should be accessible without authorization, you can use the [AllowAnonymous] attribute. This attribute allows you to exempt specific actions from the global authorization policy, making them accessible to all users, even if other parts of the controller require authorization.

In ASP.NET Core Identity, the RequireNonAlphanumeric property should be set to true if you want to enforce that passwords must contain at least one non-alphanumeric character (e.g., special symbol). This adds an extra layer of security to user passwords.

In ASP.NET Core, session information is typically stored using cookies by default. Cookies are small pieces of data sent from a web server and stored on the client's browser. They are commonly used to maintain user state and session data across HTTP requests, making them suitable for storing session information.

Dependency injection in ASP.NET Core MVC allows services to be injected into controllers via their constructors. This approach promotes the use of constructor injection for better testability and maintainability of your controllers, ensuring that required services are provided when the controller is created.

To ensure all necessary packages and dependencies are up-to-date in an ASP.NET Core project, you'd typically run the dotnet update command. This command checks for newer versions of packages and updates them in the project file. It helps maintain the project's dependencies and keeps it compatible with the latest libraries and features.

To ensure that multiple entities map to a single table in table splitting scenarios, you can use the .ToTable() method with the same table name for both entities. This tells Entity Framework Core to store both entities in the same table in the database.

Razor views in ASP.NET Core are primarily used for creating user interfaces. They allow developers to define the structure and layout of web pages by mixing HTML markup with C# or VB.NET code. Razor views enable dynamic content rendering and help build the presentation layer of web applications.

One of the primary advantages of using ASP.NET Core Identity is its built-in security features. It handles common security concerns like password hashing, account lockout, and two-factor authentication, saving developers from implementing these features manually. This enhances application security.