What is the primary role of Entity Framework Core in ASP.NET Core applications?
- Object-Relational Mapping (ORM)
- User Authentication
- Web Hosting
- Front-end Development
Entity Framework Core (EF Core) is primarily an Object-Relational Mapping (ORM) framework. It simplifies database operations by allowing developers to work with databases using object-oriented code, making it easier to interact with and manipulate data. User authentication, web hosting, and front-end development are unrelated to EF Core's core functionality.
In comparison to the traditional ASP.NET, how does ASP.NET Core handle configuration data?
- It uses JSON files only
- It relies solely on XML configuration files
- It uses a flexible and extensible configuration system
- It doesn't support configuration data
ASP.NET Core introduced a flexible and extensible configuration system that allows developers to configure applications using various sources, such as JSON, XML, environment variables, command-line arguments, and more. This approach offers better configurability and ease of use compared to the traditional ASP.NET configuration methods.
The asp-action attribute in a Razor form specifies the _________ to which the form will be submitted.
- Action Method
- URL
- Controller
- View
The asp-action attribute in a Razor form specifies the Action Method to which the form will be submitted. This attribute defines the method in the controller that will handle the form submission. It's an essential part of creating interactive web forms in ASP.NET Core.
The ________ template in ASP.NET Core ensures that JavaScript dependencies are managed using the Node package manager.
- Angular
- Blazor
- React
- SPA (Single Page Application)
The Blazor template in ASP.NET Core is designed for building web applications using C# and .NET. It ensures that JavaScript dependencies are managed using the Node package manager (npm) when necessary. This template provides a framework for building web applications that can run entirely on the client side or with server-side rendering, giving developers flexibility in their approach.
If you were looking to define custom scripts that should run during build or post-build events, where would you specify this in the project.json file?
- scripts section
- buildOptions section
- tools section
- dependencies section
In the project.json file, you would specify custom scripts that should run during build or post-build events in the "scripts" section. This section allowed developers to define pre-build, post-build, and other custom scripts for various project tasks.
Your company's security policy dictates that users must change their passwords every 60 days. How would you implement this requirement using ASP.NET Core Identity?
- Implement a custom middleware
- Configure the Password Policy
- Use a third-party authentication library
- Manually reset passwords every 60 days
To enforce password change policies in ASP.NET Core Identity, you would configure the Password Policy settings. This includes setting options like PasswordExpiration, RequiredUniqueChars, and MinimumPasswordLength. By configuring these settings, you can enforce password changes every 60 days as per your company's security policy.
Which of the following tools is NOT typically used for ASP.NET Core development?
- Eclipse
- Rider
- Visual Studio
- Visual Studio Code
While Eclipse is a powerful IDE mostly known for Java development and other types of development, it's not typically used for ASP.NET Core development. Tools like Visual Studio, Visual Studio Code, and Rider provide integrated support for ASP.NET Core.
If you wish to apply a unique constraint on a column using the Fluent API in Entity Framework Core, which method should you use inside OnModelCreating?
- HasIndex
- HasUniqueConstraint
- IsUnique
- SetUnique
To apply a unique constraint on a column in Entity Framework Core using the Fluent API, you should use the IsUnique method. This method ensures that the database enforces uniqueness for the specified column or columns, preventing duplicate values from being inserted. It's a crucial feature for maintaining data integrity.
The [______] attribute in ASP.NET Core is used to specify the route template for an action method.
- Route
- HttpPost
- Authorize
- ValidateAntiForgeryToken
In ASP.NET Core, the [Route] attribute is used to define the route template for an action method. This template determines how the URL should be structured to access the method. For example, [Route("api/products")] specifies that the method should be reachable at the URL "api/products."
After a user logs into your application, you want to display a personalized greeting like "Welcome, [Username]!". How can you fetch the username of the currently logged-in user in ASP.NET Core?
- Use HttpContext.User.Identity.Name
- Query the database for the username
- Prompt the user to enter their username after login
- Use a hardcoded username
In ASP.NET Core, you can fetch the username of the currently logged-in user by accessing HttpContext.User.Identity.Name. This property contains the username of the authenticated user, allowing you to display a personalized greeting like "Welcome, [Username]!".