The correct middleware for enabling session state in an ASP.NET Core application is "app.UseSession." This middleware is responsible for handling and managing session data, which can be used to store user-specific information during their interaction with the application.

To achieve a consistent look and feel across multiple views in an ASP.NET Core application, you can use Razor Layouts. Layouts allow you to define a common structure for your web pages, including shared headers, footers, and navigation menus. This promotes code reusability and maintains a consistent user interface.

To define an optional section in a Razor layout, you would use the @RenderSection method. This method allows you to specify content that can be overridden by views that use the layout. It's a powerful feature for creating flexible layouts in ASP.NET Core.

When working on a machine without internet access, you can use the NuGet CLI to install NuGet packages from a local feed or folder. The NuGet CLI provides command-line tools for interacting with NuGet packages, making it a suitable choice for such scenarios.

The typical name of the file that determines the layout for all views in ASP.NET Core is "_Layout.cshtml." It serves as the master layout template for your application, defining the structure that other views follow.

Application-specific settings, including connection strings, are commonly stored in the "AppSettings.json" file in ASP.NET Core applications. This JSON configuration file allows developers to manage various application settings in a structured manner.

When dealing with complex forms in Razor, using Partial Views is a common approach. Partial Views allow you to create modular and reusable components for form fields. This helps in organizing and maintaining complex forms by breaking them down into smaller, manageable parts.

The .NET CLI (Command Line Interface) in ASP.NET Core is a powerful tool for various development tasks. It allows developers to build, test, run, and manage ASP.NET Core applications from the command line. Tasks such as building the application, running database migrations, or scaffolding code can be efficiently accomplished using the .NET CLI.

The correct command to create a new ASP.NET Core web application using the .NET Core CLI is dotnet new web. This command sets up a basic web application template for you to start building upon.

When creating custom Razor tag helpers in ASP.NET Core, you override the "Execute" method to generate the desired HTML output. This method is called when the tag helper is encountered in a Razor view, allowing you to customize the generated content.