WEB API is lightweight architecture and will except the web application, it will also be used with smartphone apps. In this ASP.NET Interview Questions Series, so far we have covered questions related to the core of ASP.NET technology. WCF can support protocols such as – HTTP, TCP, Named Pipes etc. Web API uses library for JSON serialization. How do we make sure that Web API returns data in JSON format only? How we can handle errors in Web API? Here is a List of essential ASP.NET Core Web API Interview Questions and Answers for Freshers and mid level of Experienced Professionals. This will ensure that each request will be treated independently by the server. 5. Answer: We will not return view from Web API. For JSON it can return JSONResult from an action method. I hope these web API questions will help you in your interview. Web Services Interview Questions. NET 4.0 and above version supports web API. It will be executed when exceptions are unhandled and thrown from a controller method. 1. void – this type returns will empty content (Status Code :204) • HttpResponseMessage This allows to have control over the response. 2. What is Web API? 1) Explain what is REST and RESTFUL? 3 { WCF is good for developing service oriented applications and ASP.Net Web API is perfect for building HTTP services. Answer: The HttpResponseException most common exception in WebAPI. { } 5. defaults: new { id = RouteParameter.Optional } 3 { HttpResponseMessage – this can convert response for an HTTP response message. A protocol For using OData in ASP.Net Web API, We required the OData package by running below command in Package Manager Console. Assume we require to serve Web API to be accessible only over secure HTTP example for HTTPS and not over HTTP. You are here: Home 1 / Latest Articles 2 / Web 3 / Top 17 Web Developer Interview Questions & Answers last updated December 14, 2020 / 3 Comments / in Web / by renish 1) Explain what are the key responsibilities of a Web Developer? These devices will have a lot of apps to make their life easy. 34. You could also read my another articles related to Spring interview questions with answers for helping in the Spring related interviews. What is content negotiation in .Net Web API? 4 defaults: new { id = RouteParameter.Optional } 82 Frequently Asked Web API Interview Questions and Answers 1. 76. }, // Restrict by Role 13. public class StudnetController : ApiController Using Entity Framework, the implementation of Web API CRUD operation in MVC application . Answer: The main disadvantage of this approach is that we will not directly return an error code such as 404 error. Q7.What is the benefit of using REST in Web API? } 3. 81. We define the GetEmployee method as: 1 [HttpGet] We will read one of my blog for seeing the implementation of Web API 2 CRUD operation using Entity Framework. 9 stud); REST stands for Representational State Transfer. You Have Unlocked All the Answers! Web API vs WCF REST API. Answer: With the help of Attributes such as http verbs one will implement access restrictions in Web API. Top 31 ASP.NET Web API Interview Questions And Answers To Kill Your Next Tech Interview Yay! Most Common Web API Testing Interview Questions. In this part-6 of ASP.NET Web API Tutorial series, we will cover top 10 ASP.NET Web API interview questions related to ASP.NET Web API framework. This states ASP.NET Web API to use JsonFormatter when a request will be made for text/html which is the default for most browsers. IEnumerable students = GetStudentsFromDB(); // Write the list to the response body. catch (DbUpdateConcurrencyException) Answer: • MVC will be used to develop applications which have User Interface.Views in MVC can be used for developing user interface. return NotFound(); ASP.Net Web API is a framework to build, consume HTTP based service. IHttpActionResult Answer: CORS will stand for Cross-Origin Resource Sharing. If we are stuck with .NET 3.5 or we have an existing SOAP service we should support but required to add REST to reach more clients, then use WCF. Is it possible to have MVC kind of routing in Web API? Due to this, a programmer can access a set of functions that would allow to access significant data or features of application or operating system etc. It is also an XML-based messaging protocol for exchanging information among computers. Each resource will be identified by a specific URI (Uniform Resource Identifier). IHttpActionResult For example to fetch particular product details the Get method will require an id parameter. No, we can’t return a view from ASP.NET Web API Method. 2. We will focus on some of the most commonly asked Web API interview questions … 10 } Above method not getting access from browser, 81. With WCF REST Services. { What is routing in WebAPI? I compiled most frequently asked entity framework interview questions and answers for freshers and experienced dot net developers on Entity framework, architecture, Data Model, Client Data Provider, DB Context, difference Q. 19. 55. Answer: Using ASP.NET Web API has following advantages : }; 4. 4 } WCF requires lots of configuration to run, while Web API is simple and no configuration required to run. HttpResponseMessage Answer: The following line should be included in Register() method of WebApiConfig.cs file in App_Start folder. How to enable SSL to ASP.NET web? Answer: Following is the way for constructing to do, It is a framework that consists of various components of a small software package to interact between the applications or interfaces. The REST architectural pattern will specific a set of constraints which a system should adhere to. db.Entry(productMaster).State = EntityState.Modified; try 2 public void GetEmployee(int id) we will handle the exceptions at action method level or controller level using exception filters. [HttpGet] routes.MapHttpRoute( 24. It is lightweight architecture and ideal for devices that have limited bandwidth like smartphones. It is a framework which helps us to build/develop HTTP services. Answer: No, t ASP.NET Web API has not replaced WCF. { Can Web API be used with traditional ASP.Net Forms? What is HTTPResponseMessage? What is NonActionAttribute class in WebAPI? BefferedMediaTypeFormatter – Represents a helper class for allowing asynchronous formatter on top of the asynchronous formatter infrastructure. Web API REST is an architectural pattern to exchange the data over a distributed environment. RequestMessage = _request 2. Therefore, there is no mention of the method name above.Instead GetEmployee method will be called using the GET HTTP verb. This post is about ASP.NET Core Interview Questions.These questions are good enough to assess a candidate if he/she has working knowledge about Asp.Net Core, These are kind of guidelines for core ASP.NET Core concepts and some experience in real-time application development using Asp.net Core. • IHttpActionResult This acts as the factory for creating HttpResponseMessage. Hello guys! We must use Filters to implement this. MVC Asp.net Core Interview Questions Answers. Although you will have to qualify the interview to get the job and it’s not something you should take granted for. Ans. Answer: Routing is pattern matching such as in MVC. }eval(ez_write_tag([[580,400],'careerkaizen_com-large-mobile-banner-1','ezslot_1',116,'0','0'])); return StatusCode(HttpStatusCode.NoContent); Top 20 Most Important Web API Interview Questions for freshers and 2-5 year experienced./p>ASP.NET Web API is a framework provided by the Microsoft. Web API can be consumed by any clients which support HTTP verbs such as GET, PUT, DELETE, POST. 64. All routes can get registered in Route Tables. if (!ModelState.IsValid) 3. Q14.Web API uses which of the following open-source library for JSON serialization? 21. Answer: // Restrict by Name Value is read from message body in case of complex types. 11. Answer: HttpClient will be introduced in HttpClient class for communicating with ASP.Net Web API. Can we apply constraints at route level ? The following clas should be included in WebApiConfig.cs file in App_Start folder. { Some other type – we will write the serialized return value into the response body. { }. return BadRequest(ModelState); 59. In fact, even portable devices such as mobile devices can easily use Web API, which is undoubtedly the biggest adva… Explain media Formatters in Web API 2 All answers for these ASP.NET Core Web API questions … 2. 39. Web API increases TDD (Test Data Driven) approach in the development of RESTful services. When to choose WCF and Web API over the other? 4. 3. Web API is an open source platform. Yes, we can still develop RESTful services with WCF. 1) URI This list includes … Answer: Web API will be unit test by using Fiddler tool. Web API is the Microsoft open source technology to develop REST services which is based on HTTP protocol. { Write a LINQ code for authenticate the user? The same Origin means that a JavaScript will only make AJAX call for the web pages within the same origin. 4. response.Headers.CacheControl = new CacheControlHeaderValue() Answer: Web API security means, We required to control Web API and decide who can access the API and who will not access the Web API. SOAP Performance is slow as compared to REST. 67. defaults: new { id = RouteParameter.Optional} REST represents REpresentational State Transfer; it is a relatively new aspect of writing web API. Labels: asp.net web api interview questions and answers for experienced, web api interview questions and answers for experienced pdf, web api interview questions advanced, web api interview questions, life cycle of web api, asp.net web api interview questions and answers pdf, rest api interview questions and answers, api interview questions answers Answer: No, We won’t lose any information, data and other parameters if we accidentally exit the Docker container. All request will be mapped to actions using HTTP verbs. ProductMaster productMaster = db.ProductMasters.Find(id); This line of code will completely remove XmlFormatter that will force ASP.NET Web API to always return JSON irrespective of the Accept header value in the client request. 3 StudentRepository.Get(id); 3. its opend certificate add window, 77. Q23.Which of the following .NET framework supports Web API? 2. _request = request; 52. If we are intended to use transport other than HTTP, example for TCP, UDP or Named Pipes 30. API (Application Programming Interface) helps in communication and data exchange between two software systems.API act as an interface between two applications and allows the two software systems communicate with one another. TestApi is a utility library of APIs. Web API is an Application Program Interface used in web applications. Attribute based routing. }. When do we need to choose Web API? Follow me @kansiris87 for technical updates. What is ASP.Net Web API routing? If you are a back end or full stack software engineer and planning to attend a job interview soon, then we strongly recommend you to go through the above listed 82 Frequently Asked Web API Interview Questions. 1. API Testing Interview Questions. 2) Request body This is used for creating a service using HTTP verbs 1. // Get a list of Students from a database. Can we consume Web API 2 in C# console application? 5 if (stud != null) The request from the client will contain all the necessary information for the server for processing that request. To implement Token-based authentication we need to install Microsoft.Owin from Nuget package.eval(ez_write_tag([[250,250],'careerkaizen_com-large-mobile-banner-2','ezslot_4',118,'0','0'])); 28. Answer: WebAPI will supports only HTTP protocol.So it will be consumed by any client which can support HTTP protocol. For this reason, we have given a complete set of frequently asked API interview questions answer in this blog. 12 { Web API (application programming interface) is associated with developing software and applications. MVC return data in JSON format using JsonResult. Message Queuing scenario will be using MSMQ. Answer: WebAPI will return any of the following types: Q13.Which .NET framework supports Web API? 2. How parmeters gets the value in WebAPI ? { WCF 3. Labels: asp.net web api interview questions and answers for experienced, web api interview questions and answers for experienced pdf, web api interview questions advanced, web api interview questions, life cycle of web api, public class MyResult : IHttpActionResult ExceptionFilters It is an other way of building non-SOAP based services, for example, plain XML or JSON string, etc. Before going ahead, let’s see some unavoidable Interview Questions which every hiring manager asks you in any Software Testing interview. { WebAPI is a framework which helps you to build/develop HTTP services. If the provided credential is valid then the server will send a token to the client. GlobalConfiguration.Configuration.Filters.Add(new MyTestCustomerStore.NotImplExceptionFilterAttribute()); REST represents REpresentational State Transfer; it is entirely a new aspect of writing a web app. It is a framework used to build or develop service-oriented applications. What are the differences between REST and SOAP? Answer: REST is stand for Representational State Transfer. Answer: We can perform CRUD operation using entity framework with Web API. In Basic Authentication, Authorization header will contain a word Basic followed by base 64 encoded string. Explain REST? How to consume Web API using HttpClient? Top 50 Asp.Net Web API Interview Questions and Answers Details Last Updated: 06 November 2020 Download PDF 1) What is Web API? } response.Content = new StringContent(“hello”, Encoding.Unicode); What is Web API Routing? In a POST request, we will send binary as well as text data. { 68. Cacheable constraint – 4 StudentRepository.Get(id); How parameter binding works in Web API? Technically MediaTypeFormatter is an abstract class from which JsonMediaTypeFormatter and XmlMediaTypeFormatter classes inherit from. Top ASP.Net Web API Interview Questions and Answers for freshers and 2-5 year experienced dot net developers with explanation and examples. 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Difference between REST and soap is an architectural style which was brought in … API Testing Interview following.... In C # // write the list to the server ( HttpConfiguration config ) { return BadRequest ( )!
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