How does the ASP.NET Core Identity system handle migrations in a distributed deployment scenario where multiple instances might attempt to apply migrations simultaneously?
- It uses a distributed lock to ensure only one instance applies migrations
- It allows all instances to apply migrations concurrently
- It relies on database transactions for synchronization
- It doesn't support distributed deployments
In a distributed deployment scenario, ASP.NET Core Identity uses a distributed lock mechanism to ensure that only one instance applies migrations at a time. This prevents conflicts and ensures database consistency. Allowing multiple instances to apply migrations concurrently could lead to issues such as data corruption or race conditions. While database transactions are used for consistency, they may not be sufficient for distributed deployments. ASP.NET Core Identity is designed to support distributed scenarios.
Your team lead mentions the use of a "_Layout.cshtml" file in your ASP.NET Core project. What is the primary role of this file?
- Defining the webpage's structure and common elements
- Storing application configuration settings
- Handling user authentication
- Rendering JavaScript code
The primary role of "_Layout.cshtml" in ASP.NET Core is to define the webpage's structure and common elements, such as the header, footer, and navigation menu. It allows for consistent layout across multiple pages in your application.
Which tool would you use for building, running, and managing .NET applications without an IDE?
- .NET CLI
- Visual Studio
- Visual Studio Code
- ReSharper
The .NET CLI (Command-Line Interface) is a powerful tool for building, running, and managing .NET applications without relying on a full-fledged Integrated Development Environment (IDE). It allows developers to work efficiently in the command-line environment, making it a versatile choice for various .NET development tasks.
When leveraging the power of client-side validation in Razor forms, the unobtrusive _________ validation library is often used in conjunction with jQuery.
- Ajax
- Validation
- Unobtrusive
- jQuery
When using client-side validation in Razor forms, the unobtrusive Validation library is frequently used in conjunction with jQuery. This library allows you to define validation rules for form fields on the client side, providing immediate feedback to users without requiring a server round-trip. It's a crucial component for building responsive and user-friendly web applications.
How do Razor tag helpers differ from HTML helpers in ASP.NET Core?
- They are written in C#
- They use HTML-like syntax
- They are used for validation
- They are not used for forms
Razor tag helpers in ASP.NET Core use HTML-like syntax, making them more natural and readable in Razor views. HTML helpers typically involve writing C# code within the view, which can be less intuitive for front-end developers.
You are tasked to catch all unhandled exceptions globally in your ASP.NET Core MVC application. Which approach would be most suitable to achieve this?
- Use the try...catch block in every action method.
- Configure global exception handling in the Startup.cs file using app.UseExceptionHandler("/Home/Error").
- Implement a custom exception filter for each controller.
- Set MvcOptions.Filters.Add(new GlobalExceptionFilter()) in the Startup.cs file.
To catch all unhandled exceptions globally in an ASP.NET Core MVC application, you should configure global exception handling in the Startup.cs file using app.UseExceptionHandler("/Home/Error"). This route will handle unhandled exceptions and direct them to a specified error page.
In which file format is the ASP.NET Core project definition primarily saved?
- .xml
- .json
- .yaml
- .html
The ASP.NET Core project definition is primarily saved in a .json (JavaScript Object Notation) file format. This JSON file, often named "project.json" or "*.csproj," contains essential project configuration information, dependencies, and build settings. It's used by the build system to compile and manage the project.
For developers using Visual Studio, the _________ window provides a REPL environment for C# scripting.
- Output
- Console
- Debug
- Immediate
In Visual Studio, the Immediate window is a powerful tool for developers. It allows them to execute C# code directly during debugging sessions. It's particularly useful for evaluating expressions, testing code snippets, and understanding program behavior in real-time. Developers can use the Immediate window to interactively work with their code and variables.
The _______ property of the route attribute can be used to name a route, making it easier to generate URLs for it later.
- RouteName
- RouteOrder
- RouteAlias
- RouteTag
The RouteName property of the route attribute allows developers to name a route explicitly. Naming routes is especially useful when generating URLs later in the application, as it provides a more robust and maintainable way to refer to routes.
When defining an attribute route, which of the following attributes would you use to specify a route for an action method?
- [Route]
- [Action]
- [Controller]
- [HttpGet]
To specify a route for an action method using attribute routing in ASP.NET Core, you would use the [Route] attribute. This attribute allows you to define the URL pattern that maps to the action method, giving you fine-grained control over routing behavior.