To restrict a controller action to users with the "Admin" role, you should use the [Authorize(Roles = "Admin")] attribute. This attribute ensures that only users with the specified role can access the action.

The correct option is @Html.BeginForm. This Razor helper is used to generate the opening

element in an ASP.NET Core view when you want to create a form for user input. It sets the action and method attributes of the form, allowing you to specify where the form data should be submitted and how it should be sent (GET or POST).

To enforce stricter password policies in ASP.NET Core, you can configure Identity Options. ASP.NET Core Identity provides built-in password policies that you can customize to require stronger passwords. You can define password complexity rules, including minimum length, required characters, and more in the Identity Options configuration.

The "Individual User Accounts" template is the one to choose when you want to set up a project with built-in user authentication mechanisms. This template includes user registration, login, and management features out of the box, making it easier to create applications that require user authentication.

When using the [Authorize] attribute with policies, the specified policy name must be previously registered in the ConfigureServices method within the Startup.cs file. This is where you define and configure your authorization policies, associating them with specific requirements and roles.

In ASP.NET Core Entity Framework, you should override the OnModelCreating method in the DbContext class. This method allows you to configure the database model, define relationships, and apply various constraints using Fluent API or data annotations.

The Separation of Concerns (SoC) is a fundamental design principle in ASP.NET Core MVC. It advocates for dividing the application into distinct and separate components, where the Model handles data, the View manages the presentation, and the Controller orchestrates the flow of data between them. This separation enhances maintainability, testability, and scalability.

Razor Layout Views in ASP.NET Core are primarily used to define the common structure or layout that multiple Razor views within your application will share. This allows you to maintain a consistent look and feel across various parts of your web application. They help separate the presentation logic from the content-specific views.

To create a new ASP.NET Core MVC project, you would typically use an integrated development environment (IDE) like 'Visual Studio Code.' Visual Studio Code provides excellent support for ASP.NET Core development, including project templates and extensions that streamline the development process.

The project.json file was used in the early versions of ASP.NET Core (then known as ASP.NET 5), but it was replaced with the .csproj file format in .NET Core 2.0 and beyond. The project.json file defined project dependencies and configuration settings.