In a scenario where you have both UseStaticFiles() and UseDefaultFiles() in your Startup.cs, which one should be called first to ensure the default document is correctly served?
- UseStaticFiles()
- UseDefaultFiles()
- It doesn't matter, the order is irrelevant
- UseFileServer()
UseDefaultFiles() should be called before UseStaticFiles() to ensure that default documents (e.g., index.html) are correctly served. UseDefaultFiles() configures the middleware to look for and serve the default documents, and UseStaticFiles() serves static files like CSS, JavaScript, and images. The order is important because UseStaticFiles() might intercept the request before UseDefaultFiles() has a chance to locate and serve the default document.
While going through an ASP.NET Core project, you come across HTML-like elements with attributes prefixed by asp-. What are these elements likely related to?
- External JavaScript files
- Server-side form controls and actions
- Cascading Style Sheets (CSS)
- Images and multimedia content
HTML-like elements with attributes prefixed by asp- are likely related to server-side form controls and actions. These are used to integrate server-side functionality, such as form validation and data binding, into Razor views.
Which method in the DbContext class is typically overridden to configure model entities and relationships?
- OnModelCreating
- OnConfiguring
- OnEntityConfiguring
- ConfigureModel
To configure model entities and relationships in Entity Framework Core, developers often override the "OnModelCreating" method in the DbContext class. This method allows for fluent API configuration and specifying entity relationships, indexes, and more.
Which of the following best describes the "Code First" approach in Entity Framework Core?
- Database schema is generated from the code
- Code is generated from an existing database schema
- No code is required for database operations
- Code is generated from a UML diagram
The "Code First" approach in Entity Framework Core involves generating the database schema from the code. Developers define their data models as C# classes, and EF Core creates the database schema based on these classes and their relationships. This approach is ideal for developers who want to start with their object model and have the database schema generated automatically.
When dealing with the "Database First" approach in EF Core, which command is often used to scaffold the database structure?
- Scaffold-Database
- Update-Database
- Add-Migration
- Scaffold-Model
In the "Database First" approach, developers typically use the "Scaffold-Database" command to reverse engineer the database structure and generate corresponding entity classes in Entity Framework Core. This command helps in creating the model based on an existing database.
If you want to customize the response sent back to the client based on the type of exception thrown, which feature of ASP.NET Core would you leverage?
- Exception Filters
- Middleware Pipelines
- Custom Error Pages
- Middleware Components
To customize the response sent back to the client based on the type of exception thrown, you would leverage ASP.NET Core's Exception Filters. Exception Filters allow you to intercept exceptions, inspect their type or properties, and then modify the HTTP response accordingly. This is a powerful feature for fine-grained control over error handling and response generation.
Entity Framework Core's capability to work with multiple databases and switch between them based on certain criteria is known as _________.
- Database Switching
- Multi-Database Handling
- Database Providers
- Database Sharding
Entity Framework Core's capability to work with multiple databases and switch between them based on certain criteria is known as "Database Providers." Different database providers, such as Microsoft SQL Server, PostgreSQL, MySQL, etc., can be used with EF Core to interact with various database systems seamlessly.
Which tool would you use for building, running, and managing .NET applications without an IDE?
- .NET CLI
- Visual Studio
- Visual Studio Code
- MSBuild
The .NET CLI (Command Line Interface) is a powerful tool for building, running, and managing .NET applications without relying on an integrated development environment (IDE). It allows developers to perform tasks like project creation, compilation, and running applications from the command line, making it an essential tool for command-line enthusiasts and CI/CD pipelines.
Which middleware in ASP.NET Core provides a default way to handle exceptions in a web application?
- UseExceptionHandler
- UseDeveloperExceptionPage
- UseAuthentication
- UseStaticFiles
The UseDeveloperExceptionPage middleware in ASP.NET Core provides a default way to handle exceptions during development. It displays detailed error information, including stack traces, to assist developers in identifying and fixing issues during the development phase. It should be used cautiously and only in development environments.
Which of the following is a unique feature introduced in ASP.NET Core that wasn't present in the traditional ASP.NET?
- Cross-platform Support
- Web Forms
- Windows-only Development
- COM Interoperability
One of the standout features of ASP.NET Core is its cross-platform support. Unlike traditional ASP.NET, which was primarily designed for Windows-based development, ASP.NET Core is cross-platform and can run on Windows, macOS, and Linux. This flexibility is a key differentiator and allows developers to target a broader range of platforms.