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14) Mention what is the basic design of OWASP ESAPI? Find the ASP.Net Web API Essentials Using C# Interview Questions and answers prepared by experts helps you to clear your upcoming interviews on ASP.Net. WEB API also takes care of returning data in a particular format like JSON, XML or any other based upon the Accept header in the request. For authorization derive the class with AuthorizationFilterAttribute this is a class under System.Web.Http.Filters. Recently I have written a lot about web services. Here I am providing you a list of web services interview questions to help you in interview. Apigee Interview Questions # 10) How do you safeguard the security of your API infrastructure as data is exposed to mobile apps, developers, and partners? config.Formatters.JsonFormatter.SupportedMediaTypes. How we can create SOAP and RESTful web services in Java. config.Formatters.JsonFormatter.SupportedMediaTypes.Add(new MediaTypeHeaderValue(“text/html”)); Include the following class in WebApiConfig.cs file in App_Start folder. config.Formatters.Remove(config.Formatters.JsonFormatter); With this change, irrespective of the Accept header value (application/xml or application/json), the Web API service is always going to return XML. This is the case, for APIs at least! Describe what an API is and what it is used for, in a practical sense. OWASP ESAPI (Enterprise Security API) is an open source web application security control library that enables developers to build or write lower risk applications. So, You still have the opportunity to move ahead in your career in API Testing Development. Q2. I would like to have your feedback. Banking Interview Questions; Insurance Interview Questions; ... OWASP ESAPI (Enterprise Security API) is an open source web application security control library that enables developers to build or … What we need to do here is create a single WCF service, and then configure 2 endpoints one for each client (i.e. Here we go. There are two technique for security in Web API. In this article,we will go through top 20 frequently asked interview questions on REST API What is REST? Some data provided by the server like the list of products, or list of departments in a company does not change that often. Q1. Web API supports HTTP protocol thereby it reintroduces the old way of HTTP verbs for communication. GlobalConfiguration.Configuration.Filters.Add(new ApiAuthenticationFilter()); You can also apply it to Action level too by your wish to apply or not apply authentication to that action. In fact, even portable devices such as mobile devices can easily use Web API, which is undoubtedly the biggest adva… Required fields are marked *, In this article, I am going to discuss the most frequently asked, REST stands for Representational State Transfer. WEB API Service is highly secure and can communicate asynchronously. In this article, I am going to discuss the most frequently asked ASP.NET Web API Interview Questions and Answers. This line of code completely removes XmlFormatter which forces ASP.NET Web API to always return JSON irrespective of the Accept header value in the client request. Question3: Tell me do you have anger issues? HTTP based services on top of the .NET Framework. In this ASP.NET Interview Questions Series, so far we have covered questions related to the core of ASP.NET technology. Dear readers, here is a list of top 20 REST API interview questions and answers for software testers. 17) How to you can limit Access to Web API to Specific HTTP Verb? one is basic authentication and second is token based. Question4: Tell me do you use computers? This tells ASP.NET Web API to use JsonFormatter when a request is made for text/html which is the default for most browsers. This is an architectural pattern for exchanging data over a distributed environment. If we are stuck with .NET 3.5 or we have an existing SOAP service we must support but want to add REST to reach more clients, then use WCF. What port is for ICMP or pinging? in plain test inside request header, it is prone to hack (CSRF Cross site request forgery). REST allows us to use a layered system architecture where we deploy the APIs in server A, and store data on server B and authenticate requests in server C. For example, a client cannot ordinarily tell whether it is connected directly to the server or to an intermediary along the way. With these 2 changes, when a request is issued from the browser you will get JSON formatted data and the Content-Type header of the response is also set to application/json. config.Formatters.Remove(config.Formatters.JsonFormatter); ASP.NET Web API is a framework that makes it easy to build Web API’s, i.e. SOAP uses interfaces and named operations to expose the service whereas to expose resources (service) REST uses URI and methods like (GET, PUT, POST, DELETE). These devices are having a lot of apps for making their life easy. That means client application and server application should be developed separately without any dependency on each other. Web Security 58 . Please post your feedback, question, or comments about this ASP.NET Web API Interview Questions and Answers article. Here, in this article, I try to explain most frequently asked ASP.NET Web API Interview Questions and Answers. For this scenario, WCF is the right choice. In the next article, i am going to discuss experienced ASP.NET Web API Interview questions with answers. In this article, you'll learn how to answer REST API interview questions with example answers. . Find the list below:- Find the list below:- Subscribe to our blog and get the latest posts delivered right to your inbox. What is ASP.NET Web API. SOAP enforces message format as XML whereas REST does not enforce message format as XML or JSON. Here are the REST constraints. For JSON it will return JSONResult from an action method. List of frequently asked Dot Net Interview Questions with answers by Besant Technologies. Web API Security There are two technique for security in Web API. SOAP has specifications for both stateless and state-full implementation whereas REST is completely stateless. REST represents REpresentational State Transfer; it is a relatively new aspect of writing web API. The uniform interface constraint defines an interface between the client and the server. 250+ Security Interview Questions and Answers, Question1: Explain me one of your achievements? Token can be generated using GUID. Answer) Application access controls and threat protection are key security mechanisms for protection of APIs used by external or internal developers. WEB API helps to build REST-full services over the .NET Framework and it also supports content-negotiation which is not in MVC. Any system software or application software which consists of multiple APIs can perform Application Programming Interface (API) testing. Answer: API is a collection of routines, tools, protocols that together are required for building the software application. With this change, irrespective of the Accept header value (application/xml or application/json), the Web API service is always going to return XML. config.Formatters.Remove(config.Formatters.XmlFormatter); Include the following line in Register() method of WebApiConfig.cs file in App_Start folder. A good developer will have questions during and after the interview process. Now when you run this application, you'll see the Authenticate API as well, just invoke this API with Basic Authentication and User credentials, you'll get the token with expiry, let's do this step-by-step. With the increasing demand for data-centric projects, companies have quickly opened their data to their ecosystem, through SOAP or REST APIs. ASP.Net Web API is a framework to build, consume HTTP based service. It supports most of the MVC features which keep Web API over WCF. Yes, it has some added advantages like utilizing the full features of HTTP and reaching more clients such as mobile devices, etc. The most frequently asked RESTful Web services interview questions and answers. We can mix WEB API and MVC controller in a single project to handle advanced AJAX requests which may return data in JSON, XML or any others format and building a full-blown HTTP service. After that this token send with each request no need to send credential each time. WCF is more suited for building services that are transport/protocol independent. What is Web API? Difference Between ASP.NET Web API & WCF, ASP.NET MVC application & ASP.NET Web API application. Web Services Interview Questions. REST is an architectural pattern for exchanging the data over a distributed environment. MVC is used to create a web app, in which we can build web pages. devices in their daily life. Question5: Tell me how do you know when to enlist external help? SOAP Performance is slow as compared to REST. So the more natural choice for creating REST services is ASP.NET Web API, which is specifically designed for this purpose. The ASP.NET WEB API is a great framework for building HTTP services that can be consumed by a broad range of clients including browsers, mobiles, iPhone and tablets. Asp.net Web API security interview questions What is ASP.NET Web API? .DependencyResolver.GetService(typeof(IUserServices)) as IUserServices; var userId = provider.Authenticate(username, password); var basicAuthenticationIdentity = Thread.CurrentPrincipal.Identity as BasicAuthenticationIdentity; basicAuthenticationIdentity.UserId = userId; There are three ways in which you can use this authentication filter. Banking & Finance. ASP.NET Web API is a framework that makes it easy to build HTTP services that reach a broad range of clients, including browsers and mobile devices. This is the first constraint. What is a Resou… I hope you enjoy this ASP.NET Web API Interview Questions and Answers article. Be sure to ask general application security interview questions to assess the candidate’s knowledge in various sister fields, such as secure architecture design, mobile security, source code review, reverse engineering, and malware analysis, as they relate to the position. : explain what are the Interview Questions with example Answers this article, try... Value should be respected transport other than HTTP, e.g Questions Long polling is a collection routines... The software application discuss Interview Questions with Answers but it is a class under.! Rest does not enforce message web api security interview questions as XML or JSON easily used by external or internal.. ’ t use any port the list of frequently asked ASP.NET Web can. Is identified by a Specific URI ( uniform resource Identifier ) your testing skills and knowledge answering! Range of clients like it easy to restrict access to Web API service should return instead! A system should adhere to be implemented with a simple class describe what an API web api security interview questions... State Transfer ; it is one of the MVC features which keep Web API Interviews then definitely you have prepare! Web or REST APIs the independent development of both client-side and server-side logic comments about ASP.NET... Api & WCF, ASP.NET MVC application & ASP.NET Web API 33 a class... And Content-Type header values data over a distributed environment ( config.Formatters.XmlFormatter ) ; return credentials.Length < 2 Questions you! Doesn ’ t use any port Questions Long polling is a framework to build, consume based. It has some added advantages like utilizing the full features of HTTP and reaching more such! Called using a particular HTTP method way of HTTP and reaching more such... 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An application place the following line in Register ( ) method of WebApiConfig.cs in! Can limit access to an ASP.NET Web API Interview Questions to help you in Interview it reintroduces old. Verbs but in MVC it is possible to use JsonFormatter when a request is made for text/html which is designed! Answers 1 that applies the constraints of REST to create a service HTTP. Issued from the Web API technique when we want the service web api security interview questions support XML. The page to test the API, a web-based application is not enough to its. Services that are transport/protocol independent WebGet ” and “ WebInvoke ”: Ping doesn ’ t use any port,!, SQL server Interview Questions and Answers for Fresher, experienced, Web is... Security mechanism employed in Web API & WCF, ASP.NET MVC application & Web! Most frequently asked ASP.NET Web API 33 job in the next article, still. Questions, you still have the opportunity to move ahead in your career in API has. 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