The dependency injection feature in ASP.NET Core is:
- A built-in container for managing application dependencies
- A third-party library for dependency management
- Not available in ASP.NET Core
- Limited to a specific programming language
ASP.NET Core includes a built-in dependency injection (DI) container for managing application dependencies. This feature helps achieve loose coupling, maintainability, and testability in your code by allowing you to inject dependencies into classes rather than hard-coding them.
What does the Update-Database command do in the context of ASP.NET Core Identity migrations?
- It applies pending migrations to update the database schema.
- It updates the ASP.NET Core Identity framework itself.
- It generates a new migration file for Identity changes.
- It deletes the database and recreates it from scratch.
The Update-Database command, when used with Identity migrations, applies any pending migrations to update the database schema to match the current state of your Identity models. This ensures that the database structure aligns with your Identity-related code changes.
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.
You're a beginner and want to start developing ASP.NET Core apps. Which IDE developed by Microsoft would you most likely start with for a comprehensive development experience?
- Visual Studio
- Visual Studio Code
- Eclipse
- IntelliJ IDEA
As a beginner, for a comprehensive ASP.NET Core development experience, you would typically start with Microsoft's Visual Studio. Visual Studio provides a rich and integrated development environment specifically tailored for ASP.NET Core development, making it an excellent choice for newcomers.
To serve static files, one must configure the necessary _________ in the Startup.cs file.
- Middleware
- Route
- Controller
- Model
To serve static files in ASP.NET Core, you need to configure the necessary middleware in the "Startup.cs" file. Middleware is a key concept in ASP.NET Core for handling requests and responses.