Razor views support C# Code Blocks, which allow developers to embed server-side logic directly within the HTML markup. This is a powerful feature of Razor that enables dynamic content generation.

In an ASP.NET Core MVC application, the Razor view files are typically located in the "Views" directory. These view files use the Razor syntax to define the HTML structure of the application's user interface. Views are responsible for rendering data provided by controllers to create the final web page that users interact with.

In Razor syntax, the "@" symbol is used to denote the start of server-side code. This allows developers to seamlessly transition between HTML markup and C# code within a Razor view.

The "API" template in ASP.NET Core is specifically designed to configure a project for building web applications that primarily expose web APIs. This template sets up the project with minimal middleware and settings for handling HTTP requests and responses, making it suitable for building RESTful APIs.

Integration tests focus on testing the interactions and collaborations between different units or components within a system. These tests ensure that the integrated parts work correctly together.

In an ASP.NET Core project, the .csproj (C# project) file is crucial for specifying the SDK version, dependencies, and various project-related configurations. It serves as the project file that orchestrates the build process and defines the project structure.

The DbContext class in Entity Framework Core serves as the bridge between your application code and the database. Its primary purpose is to manage database connections, handle database operations, and provide a high-level data access API for interacting with the database. It abstracts the underlying database operations, making it easier to work with databases in your application.

The "Web Application (Razor Pages)" template uses server-side rendering, where most of the processing occurs on the server before rendering content to the client. This can be a scalability bottleneck for large-scale applications with high traffic because it places a significant load on the server. Web APIs and client-side rendering approaches like Blazor Server are typically preferred for such scenarios.

The correct file to specify the default layout for Razor views in ASP.NET Core is _ViewStart.cshtml. This file allows you to set the layout that should be applied to multiple views in a folder or the entire application.

In an ASP.NET Core MVC application, information about available books and their details is typically stored in a database. The Model (M) in MVC is responsible for managing data, and databases are commonly used for persistent data storage in such applications. Controllers handle user requests and orchestrate interactions with the Model to retrieve and display this data.