You are working on an ASP.NET Core MVC application, and a new requirement mandates that one of the action methods should only be accessible via HTTP POST. How would you implement this?
- Decorate the action method with [HttpPost] attribute
- Set the HTTP verb in the routing configuration
- Add a ValidateAntiForgeryToken attribute
- Use a custom middleware
To restrict an action method to only accept HTTP POST requests, you should decorate the action method with the [HttpPost] attribute. This attribute ensures that the method can only be invoked when an HTTP POST request is made to it.
If you want to add user secrets in a development environment without affecting the main configuration files, which tool or method would you typically use in an ASP.NET Core project?
- Environment variables
- Hardcode secrets directly in the code
- Configuration files
- User Secrets Manager or "dotnet user-secrets"
In ASP.NET Core, to add user secrets in a development environment without affecting the main configuration files, you would typically use the "User Secrets Manager" or the "dotnet user-secrets" command-line tool. This tool allows developers to store sensitive configuration data securely during development without checking them into source control. It's a best practice to separate secrets from code and configuration files.
What type of files are NOT recommended to be served as static files in ASP.NET Core for security reasons?
- Configuration files
- Images
- JavaScript files
- CSS files
Configuration files are generally NOT recommended to be served as static files in ASP.NET Core for security reasons. Serving configuration files exposes sensitive application settings to potential attackers. It's crucial to keep configuration files protected and not directly accessible from the web.
How does ASP.NET Core Identity handle password hashing by default?
- Uses SHA-1 hashing algorithm
- Uses plain text storage
- Uses BCrypt with a randomized salt
- Uses PBKDF2 with a randomized salt
ASP.NET Core Identity is security-conscious and, by default, uses PBKDF2 (Password-Based Key Derivation Function 2) with a randomized salt for password hashing. This ensures that even if two users have the same password, their hashed passwords will look completely different due to the unique salt, enhancing security.
While setting up an ASP.NET Core project, you want to ensure that your application can serve images and other static files. Which middleware should you configure?
- Authentication Middleware
- Static File Middleware
- Logging Middleware
- Routing Middleware
To serve static files like images, CSS, and JavaScript in an ASP.NET Core application, you should configure the Static File Middleware. This middleware allows you to serve files from specific directories in your project, enhancing the performance of your web application.
What is the primary goal of unit testing in software development?
- To find all bugs in the software
- To ensure the user interface is intuitive
- To verify that individual components work as expected
- To test the entire system's functionality
Unit testing primarily aims to verify that individual components (units) of a software application work correctly in isolation. It's not focused on finding all bugs in the software or testing the complete system's functionality, which is the role of integration and system testing.
Which ASP.NET Core method is used to return a Razor view from a controller action?
- ViewResult
- JsonResult
- ContentResult
- RedirectResult
The ViewResult is used to return a Razor view from a controller action in ASP.NET Core. It allows you to render a view and pass a model to it, which can then be used for dynamic content generation.
You are building a real-time dashboard which updates the user interface as soon as data changes on the server. Which technology in the ASP.NET Core ecosystem would be most suitable for this?
- SignalR
- WebSocket
- WebSockets API
- AJAX
SignalR is a library in ASP.NET Core designed specifically for real-time web applications. It allows server-to-client and client-to-server communication over various transport protocols, making it an ideal choice for real-time dashboards. SignalR abstracts away the complexities of WebSocket and other transport protocols, simplifying real-time communication.
The Fluent API provides more configuration options compared to data annotations and is configured in the _________ method of the DbContext.
- OnModelCreating
- ConfigureOptions
- DbContextSetup
- ModelOptions
The Fluent API in Entity Framework Core provides advanced configuration options for defining the database schema and behavior of your entities. It is configured in the OnModelCreating method of the DbContext class. Using the Fluent API, you can customize table names, define composite keys, configure relationships, and perform various other advanced configurations that may not be possible with data annotations alone.
In a large application with numerous controllers and actions, you're noticing performance issues related to route matching. What can you implement to optimize the routing performance?
- Use attribute routing
- Implement custom route constraints
- Use wildcard routes
- Implement route caching
To optimize routing performance in a large application, you can implement route caching. Route caching stores the results of route matching so that subsequent requests with the same URL can be quickly resolved without re-evaluating the route templates. This can significantly improve performance in large applications with complex routing configurations.