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For configuration in an ASP.NET Core application, which of the following providers is NOT a default configuration provider?

  • JSON Configuration Provider
  • XML Configuration Provider
  • Environment Variables Configuration Provider
  • Database Configuration Provider
In ASP.NET Core, JSON, XML, and Environment Variables Configuration Providers are default providers for configuration settings. However, Database Configuration Provider is not a default provider. Developers typically use it when they need to store configuration settings in a database.
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Which method is commonly used in the Startup.cs file to enable the serving of static files in an ASP.NET Core application?

  • app.UseStaticFiles()
  • app.EnableStaticFiles()
  • app.ServeStaticFiles()
  • app.StaticFiles()
The app.UseStaticFiles() method is commonly used in the Startup.cs file to enable the serving of static files in an ASP.NET Core application. This middleware allows you to serve files such as HTML, CSS, JavaScript, and images directly from your web application. It's a crucial step for rendering client-side resources.
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When using Entity Framework Core, how can developers specify relationships like one-to-one, one-to-many, or many-to-many between entities?

  • Fluent API
  • Annotations
  • Data Annotations
  • Model Builder
Developers can specify relationships like one-to-one, one-to-many, or many-to-many between entities using the Fluent API in Entity Framework Core. The Fluent API provides a more flexible and explicit way to define relationships and configure various aspects of the database schema.
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How can you handle optimistic concurrency in Entity Framework Core?

  • Use database locks
  • Use pessimistic concurrency
  • Use timestamps or row version columns
  • Manually update records
Optimistic concurrency in EF Core is typically handled by using timestamps or row version columns in the database. When two users try to update the same record concurrently, EF Core checks if the row version has changed since the data was initially loaded, and if so, it raises a concurrency exception, allowing you to handle the conflict.
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You're reviewing a colleague's code and notice that they've added the same namespace to multiple Razor views. How can you suggest an optimization to this approach?

  • Leave it as is, it's the standard practice
  • Suggest moving the namespace declaration to the _Layout.cshtml file
  • Suggest moving the namespace declaration to the _ViewImports.cshtml file
  • Remove the namespace declaration altogether
The optimization suggestion would be to move the common namespace declaration to the _ViewImports.cshtml file. This way, it's defined once and is available for all views, reducing redundancy and making it easier to manage.
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In SignalR, which transport method does it fall back to if WebSockets are not available?

  • Server-Sent Events (SSE)
  • Long Polling
  • WebRTC
  • gRPC
SignalR is a real-time framework for ASP.NET Core that supports various transport methods. When WebSockets are not available due to network restrictions or browser compatibility, SignalR falls back to Long Polling. Long Polling involves sending a request to the server, keeping it open until new data is available, and then responding.
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You've been asked to add a feature to your ASP.NET Core web application that allows live chat functionality. Which ASP.NET Core technology would help facilitate this feature?

  • SignalR
  • Entity Framework Core
  • ASP.NET Web Forms
  • Blazor
SignalR is a real-time web framework in ASP.NET Core that enables features like live chat. It allows bi-directional communication between the server and connected clients, making it ideal for building interactive and real-time applications. The other options are not related to live chat functionality.
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Imagine you're working on an e-commerce application using ASP.NET Core MVC. A user wants to view details of a product. Which component of the MVC pattern would be responsible for fetching the product details from the database?

  • Model
  • View
  • Controller
  • Middleware
In the MVC (Model-View-Controller) pattern, the Model component is responsible for managing the application's data and business logic. In this scenario, it would be responsible for fetching the product details from the database. The Model interacts with the database and provides data to the Controller, which then passes it to the View for rendering.
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If a developer is looking to quickly scaffold a new ASP.NET Core controller, which CLI command would they most likely use?

  • dotnet new controller
  • dotnet build
  • dotnet publish
  • dotnet test
To quickly scaffold a new ASP.NET Core controller, a developer would use the dotnet new controller CLI command. This command generates the necessary files and code structure for a controller, making it a time-saving tool for building web APIs and MVC applications.
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What is the purpose of the UseMvc method in the Startup.cs file?

  • Configures routing for MVC
  • Sets up the database connection
  • Registers a middleware
  • Defines a controller
The UseMvc method in Startup.cs is used to configure routing for the ASP.NET Core MVC framework. It sets up how incoming HTTP requests are mapped to controller actions, allowing you to define the URL structure and route parameters. This is crucial for handling requests and directing them to the appropriate controllers and actions.
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