Full Answer
What is the purpose of WebHostBuilder () function?
IWebHostBuilder : The web host builder is basically a factory to create a web host. It is the thing that constructs the web host but also configures all the necessay bits the web host needs to determine how to run the web application.
What is the purpose of the CreateDefaultBuilder method?
CreateDefaultBuilder() Initializes a new instance of the WebHostBuilder class with pre-configured defaults.
What is Web Host builder in .NET Core?
ASP.NET Core apps configure and launch a host. The host is responsible for app startup and lifetime management. At a minimum, the host configures a server and a request processing pipeline. The host can also set up logging, dependency injection, and configuration.
What does WebHost CreateDefaultBuilder () do Mcq?
Question#1 What does WebHost. CreateDefaultBuilder() do? c) Configure logging to read from the Logging section of the appsettings.
What is host CreateDefaultBuilder?
CreateDefaultBuilder() Initializes a new instance of the HostBuilder class with preconfigured defaults. CreateDefaultBuilder(String[]) Initializes a new instance of the HostBuilder class with preconfigured defaults.
What is IServiceCollection in .NET Core?
AddScoped(IServiceCollection, Type, Type) Adds a scoped service of the type specified in serviceType with an implementation of the type specified in implementationType to the specified IServiceCollection.
What are the two hosts in .NET web application?
Here, two servers are running. One is IIS and another is Kestrel. This model is a default model for all the applications implemented before . NET Core 2.2.
What is middleware in .NET Core?
Middleware is software that's assembled into an app pipeline to handle requests and responses. Each component: Chooses whether to pass the request to the next component in the pipeline. Can perform work before and after the next component in the pipeline.
What is the difference between IApplicationBuilder use () and IApplicationBuilder run ()?
Use() and IApplicationBuilder. Run() C# Asp.net Core? We can configure middleware in the Configure method of the Startup class using IApplicationBuilder instance. Run() is an extension method on IApplicationBuilder instance which adds a terminal middleware to the application's request pipeline.
What is RouteConfig Cs in ASP NET MVC Mcq?
cs in ASP.Net MVC? A) RouteConfig. cs is used to register MVC config statements, route config.
What is the use of MAP extension while adding middleware to ASP.NET Core pipeline Mcq?
What is the use of the "Map" extension while adding middleware to the ASP.NET Core pipeline? It is used for branching the pipeline. It branches the ASP.NET Core pipeline based on request path matching. If the request path starts with the given path, middleware on to that branch will execute.
What is Dot NET Core Mcq?
Each test contains MCQs, and you will get 1 point for each correct answer. There is no time limit for the tests....ASP.NET Core Tests.TopicsASP.NET Core setup, hosting, CLI, middleware, Startup class, configuration, and logging. No of Questions: 20 Level: EasyStart ASP.NET Core Test
What are the main characteristics of ASP.NET Core?
13 features to build better applications with ASP.NET CoreCross-platform & container support. ... High performance. ... Asynchronous via async/await. ... Unified MVC & Web API frameworks. ... Multiple environments and development mode. ... Dependency Injection. ... WebSockets & SignalR. ... Cross-Site Request Forgery (CSRF) Protection.More items...•
Which method of startup class sets up the application's request processing pipeline?
The Configure method The request pipeline is configured by adding middleware components to an IApplicationBuilder instance.
Which of the following is responsible to launch the application including all environment variables that should be used in the entire project?
In launchsettings. json file, You can define project specific settings associated with each profile Visual Studio is configured to launch the application, including any environment variables that should be used. You can define framework for your project for compliation and debugging for specific profiles.
Is the runtime of .NET core?
NET Core Runtimes are the smallest self-contained and specific component and contain the absolute minimum to run just . NET Core on a specific platform. Note it a runtime install does not include the ASP.NET Core meta package runtime dependencies, so if your application references Microsoft.
What is the IWebHostEnvironment.ApplicationName property?
The IWebHostEnvironment.ApplicationName property is automatically set when UseStartup or Configure is called during host construction. The value is set to the name of the assembly containing the app's entry point. To set the value explicitly, use the WebHostDefaults.ApplicationKey:
What is the role of ASP.NET Core?
ASP.NET Core apps configure and launch a host. The host is responsible for app startup and lifetime management. At a minimum, the host configures a server and a request processing pipeline. The host can also set up logging, dependency injection, and configuration.
What is web host builder?
The Web Host Builder in ASP .NET Core was used for hosting web apps in v2.x. As mentioned in the previous section, it has since been replaced by the Generic Host Builder as of v3.0. At a minimum, the Main () method of your ASP .NET Core 2.x web app would have looked like the following:
What is ASP 3.x?
As of 2019, ASP .NET Core 3.x allows you to use the updated Generic Host Builder instead of the Web Host Builder in your web apps. The ASP .NET Core templates were updated to include the Generic Host Builder as of v3.0 Preview 2. You should use v3.1 since it’s a LTS (Long-Time Support) release.
How long is ASP 3.1?
This is the seventh of a new series of posts on ASP .NET Core 3.1 for 2020. In this series, we’ll cover 26 topics over a span of 26 weeks from January through June 2020, titled ASP .NET Core A-Z! To differentiate from the 2019 series, the 2020 series will mostly focus on a growing single codebase ( NetLearner!) instead of new unrelated code snippets week.
How many times can you call Build?
Here, the Build () method initializes the host, so (as you may expect) it can only be called once for initialization. Additional options can be configured by calling the ConfigureServices () method before initializing the host with Build ().
What is the ConfigureServices method?
Here, the ConfigureServices () method takes in a HostBuilderContext and an injected collection of IServiceCollection services. The options set in the Configure () can be used to set additional HostOptions. Currently, HostOptions just has one property, i.e. ShutdownTimeout.
What is the CreateDefaultBuilder method?
The CreateDefaultBuilder () method performs a lot of “magic” behind the scenes, by making use of pre-configured defaults. From the official documentation, here is a summary of the default configuration from the Default Builder:
What is use exception handler?
In the above code,UseExceptionHandler is a middleware. It is added as a middleware to the pipeline that will catch exceptions, log them, reset the request path, and re-execute the request.
What is the Configure method?
Configure method defines the middleware in the Http request pipeline. The software components that are assembled into an application pipeline to handle requests and responses are the middlewares.
How many requests can ASP.NET handle?
ASP.NET Core (on Linux!) itself can handle over 2 000 000 – 2 Million requests per second for plaintext request/response scenarios. ASP.NET Core MVC can handle over 1 million requests per second! Compared to Node.js, which can handle about 400 000 requests per second, this is an amazing effort.
What is the AddSingleton method?
The AddSingleton method, adds a singleton service of the type specified in TService with an implementation type specified in TImplementation to the specified Microsoft.Extensions.Dependen cyInjection.IServiceCollection. It returns a reference to this instance after the operation has completed.
What is the purpose of the usedeverException?
The purpose of this function is to capture synchronous and asynchronous System.Exception instances from the pipeline and generates HTML error responses. It returns a reference to the app after the operation is completed.We use the UseDeveloperException () extension method to render the exception during the development mode.
What is UseIISIntegration?
UseIISIntegration configures the port and base path the server should listen on when running behind AspNetCoreModule. The app will also be configured to capture startup errors. WebHostBuilder uses the UseIISIntegration for hosting in IIS and IIS Express.
How to register singleton service?
Services can be registered with the container in several ways.In this case we are using Singleton Service by using the AddSingleton<IService, Service> () method.Singleton lifetime services are created the first time they are requested and then every subsequent request will use the same instance. If the application requires singleton behavior, allowing the services container to manage the service's lifetime is recommended instead of implementing the singleton design pattern and managing the object's lifetime in the class.
What is the Configure method?
Configure method defines the middleware in the Http request pipeline. The software components that are assembled into an application pipeline to handle requests and responses are the middlewares.
What is a chunked encoding?
The encoding used to transfer the entity to the user. It is set to Chunked indicating that Chunked transfer encoding data transfer mechanism of the Hypertext Transfer Protocol (HTTP) is initiated in which data is sent in a series of “chunks”.
What is a.NET cross platform?
A cross-platform version of .NET, that supports almost all things that .NET supported (except things like WPF, Windows Forms, Web Forms and Active Directory)
How many requests can ASP.NET handle?
ASP.NET Core (on Linux!) itself can handle over 2 000 000 – 2 Million requests per second for plaintext request/response scenarios. ASP.NET Core MVC can handle over 1 million requests per second! Compared to Node.js, which can handle about 400 000 requests per second, this is an amazing effort.
What to do if you get an error saying "Scaffold-DbContext is not recognized as?
If you get an error “The term ‘Scaffold-DbContext’ is not recognized as the name of a cmdlet” , simply Close the Visual Studio and open again.
What is a custom header?
It is the custom header. It contains the base64-encoded path to the source file on disk and is used to link a page’s generated output back to that source file. It’s only generated for localhost requests.
What is the AddSingleton method?
The AddSingleton method, adds a singleton service of the type specified in TService with an implementation type specified in TImplementation to the specified Microsoft.Extensions.Dependen cyInjection.IServiceCollection. It returns a reference to this instance after the operation has completed.