When setting up a development environment for ASP.NET Core, why might a developer choose Visual Studio Code over Visual Studio?
- Visual Studio Code is free
- Visual Studio Code is open-source
- Visual Studio Code is lighter-weight
- Visual Studio Code has better intellisense
Developers might choose Visual Studio Code over Visual Studio for ASP.NET Core development because it is lighter-weight, making it faster to install and launch. It's also open-source and free, which can be advantageous for those on a budget or who prefer open-source tools. While Visual Studio offers more features for enterprise-level projects, Visual Studio Code is often preferred for smaller projects or when platform independence is a priority.
How does the ASP.NET Core MVC framework differentiate between different action methods when they have the same name but different HTTP verbs (e.g., GET vs. POST)?
- By their parameter types
- By their route attributes
- By their method names
- By their controller names
In ASP.NET Core MVC, the framework differentiates between actions with the same name but different HTTP verbs based on their route attributes. These attributes define the URL patterns that map to specific action methods, allowing the framework to route requests correctly.
In ASP.NET Core Identity, the _________ property is often used to ensure unique user identification beyond just the username.
- PhoneNumber
- SecurityStamp
- Role
In ASP.NET Core Identity, the SecurityStamp property is often used to ensure unique user identification beyond just the username. The security stamp is a unique value associated with each user, and it can be used to invalidate user sessions and tokens when security-related changes occur, such as password changes or logouts.
The ASP.NET Core "Web Application" template is best suited for creating ________-based applications.
- Web
- Mobile
- Desktop
- Cloud
The "Web Application" template in ASP.NET Core is designed for creating web-based applications. It provides the necessary structure, libraries, and tools to build web applications that can run on various platforms and browsers.
What is the primary goal of unit testing in ASP.NET Core projects?
- To validate the overall functionality of the application
- To test the entire application as a whole
- To ensure that each component or unit of code works correctly in isolation
- To test only the user interface
Unit testing in ASP.NET Core projects focuses on testing individual components or units of code in isolation. The primary goal is to ensure that each unit functions correctly and meets its specific requirements. This helps in identifying and fixing bugs early in the development process, contributing to the overall stability and reliability of the application.
For an action method to be accessible only by non-authenticated users, you should use the _________ attribute.
- [AllowAnonymous]
- [Authorize]
- [DenyAnonymous]
- [NonAuthenticated]
To make an action method accessible only to non-authenticated (anonymous) users in ASP.NET Core, you should use the [AllowAnonymous] attribute. This attribute overrides any global authorization policies, allowing unrestricted access to the action by users who haven't been authenticated.
When considering zero-downtime deployments, which deployment strategy involves routing traffic gradually to the new version of the application?
- Blue-Green Deployment
- Canary Deployment
- Rolling Deployment
- Shadow Deployment
Canary Deployment is a deployment strategy where a small percentage of production traffic is directed to a new version of an application, allowing for real-world testing while minimizing risk. This approach helps identify issues early and gradually shifts traffic as confidence in the new version grows.
When constructing the middleware pipeline in ASP.NET Core, what happens if the next() method isn't called within a middleware component?
- The request processing stops, and no further middleware components are executed.
- The request is redirected to the homepage.
- An exception is thrown, terminating the application.
- The request continues to the next middleware component as usual.
If the next() method isn't called within a middleware component, the request processing stops at that middleware, and no further middleware components in the pipeline are executed. This can lead to incomplete request processing or unexpected behavior in the application.
When dealing with file downloads in ASP.NET Core, which action result allows you to send a byte array as the response along with a download dialog to the client?
- FileContentResult
- ObjectResult
- JsonResult
- StatusCodeResult
The FileContentResult action result in ASP.NET Core is used to send a byte array as the response along with a download dialog to the client. It's commonly used for file downloads like PDFs, images, or other binary files. The response content is a byte array, and you can specify the file's content type and download filename.
If you want to create a custom middleware, which method signature should it follow?
- Task InvokeAsync(HttpContext context)
- void Configure(IApplicationBuilder app)
- void Execute(HttpContext context)
- Task Run(HttpContext context)
Custom middleware in ASP.NET Core should follow the Task InvokeAsync(HttpContext context) method signature. This method is called for each HTTP request and allows you to implement your custom logic within the middleware.