web api security interview questions

Using ASP.NET Web API has a number of advantages, but core advantages are: The new features introduced in ASP.NET Web API framework v2.0 are as follows: Below are some of the differences between MVC and Web API. There is nothing wrong to use WCF to create REST services. 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. WebHttpBinding to be enabled for WCF Rest. 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. . .Add(new MediaTypeHeaderValue(“text/html”)); config.Formatters.Add(new CustomJsonFormatter()); 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. JsonMediaTypeFormatter handles JSON and XmlMediaTypeFormatter handles XML. If yes, how do you deal with them? Web API can be consumed by any clients which support HTTP verbs such as GET, PUT, DELETE, POST. API Testing Interview Questions. 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). This line of code completely removes JsonFormatter which forces ASP.NET Web API to always return XML irrespective of the Accept header value in the client request. config.Formatters.Remove(config.Formatters.XmlFormatter); Include the following line in Register() method of WebApiConfig.cs file in App_Start folder. Web or Rest API interview questions & answers 1. Click on the first API link, in other words POST authenticate. ASP.NET Web API is a framework that makes it easy to build Web API’s, i.e. You need to override OnAuthorization function. SOAP Performance is slow as compared to REST. REST architectural pattern treats each. Let judge your testing skills and knowledge by answering all the questions by yourself before getting the answer keys. 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. var authRequest = filterContext.Request.Headers.Authorization; if (authRequest != null && !String.IsNullOrEmpty(authRequest.Scheme) && authRequest.Scheme == "Basic"), if (string.IsNullOrEmpty(authHeaderValue)). Web API is actually accessible through HTTP protocol, it doesn't say whether it is accessed by a web browser or an application. Security Testing Interview Questions and Answers for Fresher, Experienced, Web Application Security Testing Interview Questions and Answers, cyber Security Interview Questions. So, if we like to expose our service data to the browsers as well as to all these modern devices apps in a fast and simple way, we should have an API which is compatible with browsers as well as all these devices. If you are using tools like a fiddler and if you set Accept header to application/xml you will still get XML formatted data. MVC is used to create a web app, in which we can build web pages. Mindmajix offers Advanced API Testing Interview Questions 2018 that helps you in cracking your interview & acquire a dream career as API Testing Developer. All requests are mapped to actions using HTTP verbs. The uniform interface constraint defines an interface between the client and the server. For example, we want to build a single service that can be consumed by 2 different clients – Let’s say, a Java client and .NET client. 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. If you loved these Questions, you will love our PDF Interview Guide with 400+ Questions. With the increasing demand for data-centric projects, companies have quickly opened their data to their ecosystem, through SOAP or REST APIs. The SOAP message consists of an envelope which includes SOAP headers and body to store the actual information we want to send whereas REST uses the HTTP build-in headers (with a variety of media-types) to store the information and uses the HTTP GET, POST, PUT and DELETE  methods to perform CRUD operations. Your email address will not be published. You can also globally add this in Web API configuration file , so that filter applies to all the controllers and all the actions associated to it. List of frequently asked Dot Net Interview Questions with answers by Besant Technologies. Visit the blog for .Net FAQ,.Net interview questions,ASP .Net FAQ, C# .Net FAQ,ASP .Net interview questions, interview question on .Net, interview questions on C#. resource-based architecture. Yes, It is possible to use Web API with ASP.Net web form. Run the application. 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. authorization. This is the first constraint. Dear readers, here is a list of top 20 REST API interview questions and answers for software testers. Here I am providing you a list of web services interview questions to help you in interview. Use this technique when you want your service to support only XML and not JSON. Just apply this filer to ProductController. WCF can only be consumed by clients, which can understand XML. Here are the REST constraints. Web API can be hosted in IIS or in an application. The REST architectural pattern specifies a set of constraints that a system should adhere to. ASP.NET Web API is an ideal platform for building Restful services. REST stands for Representational State Transfer. There are a number of ways to accomplish this security, one of which is with the exchange of tokens. So here is what we want the service to do. These devices are having a lot of apps for making their life easy. Question4: Tell me do you use computers? In the next article, i am going to discuss experienced ASP.NET Web API Interview questions with answers. Question2: Explain what are some of your greatest strengths? Here BasicAuthenticationIdentity  is a user defined class which has user id and. 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. I would like to have your feedback. So there will a client server communication using HTTP protocol. 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. Dot Net Interview Questions and answers for beginners and experts. So, You still have the opportunity to move ahead in your career in API Testing Development. In this article, I will share frequently asked ASP.Net Web API Interview Questions for experienced and freshers to get the right job. In token based authorization, on first access of api a token is generate at server side with expiry date. This means that we should not be storing anything on the server related to the client. Moreover, WEB API is open source and an ideal platform for building REST-full services over the .NET Framework. HTTP based services on top of the .NET Framework. Ans: Ping doesn’t use any port. public GenericAuthenticationFilter(bool isActive), public override void OnAuthorization(HttpActionContext filterContext). These services can then be consumed by a broad range of clients like. A good developer will have questions during and after the interview process. ASP.NET Web API is a framework for building HTTP based service, that can communicate using different data format like XML and JSON, Asp.Net Web service can reach to different clients like browsers, mobile, IoT devices, etc. What is ASP.NET Web API. Dynamic Security Tests : Dynamic security tests done by a professional security testing team should be an important part of the release cycle. Then forward the message to the second layer. Any system software or application software which consists of multiple APIs can perform Application Programming Interface (API) testing. The request from the client should contain all the necessary information for the server to process that request. ASP.NET Web API is a framework for building HTTP based service, that can communicate using different data format like XML and JSON, Asp.Net Web service can reach to different clients like browsers, mobile, IoT devices, etc. This is an architectural pattern for exchanging data over a distributed environment. I hope you enjoy this ASP.NET Web API Interview Questions and Answers article. The problem with this approach is that the Content-Type header of the response is set to text/html which is misleading. Most Common Web API Testing Interview Questions. Sort an Array which contains only 0 and 1. config.Formatters.JsonFormatter.SupportedMediaTypes. What is Representational state transfer or REST? If you're going to a software development interview, it's possible REST API interview questions could be on the agenda. What is Web API? Thursday, April 12, 2018. Name some of the commonly used HTTP methods used in REST based architecture? 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 … /// Virtual method.Can be overriden with the custom Authorization. OWASP ESAPI (Enterprise Security API) is an open source web application security control library that enables developers to build or write lower risk applications. There are two technique for security in Web API. Question3: Tell me do you have anger issues? Difference Between ASP.NET Web API & WCF, ASP.NET MVC application & ASP.NET Web API application. The product, Employee, Customer, etc. SOAP stands for Simple Object Access Protocol whereas REST stands for Representational State Transfer. I would like to have your feedback. The SOAP is an XML based protocol whereas REST is not a protocol but it is an architectural pattern i.e. Here, in this article, I try to explain most frequently asked. ASP.Net Web API is a framework to build, consume HTTP based service. It’s another way of building non-SOAP based services, for example, plain XML or JSON string, etc. 8. In the next article, i am going to discuss experienced ASP.NET Web API Interview questions with answers. var identity = FetchAuthHeader(filterContext); var genericPrincipal = new GenericPrincipal(identity, null); Thread.CurrentPrincipal = genericPrincipal; if (!OnAuthorizeUser(identity.Name, identity.Password, filterContext)). How we can create SOAP and RESTful web services in Java. Include the following line in Register() method of WebApiConfig.cs file in App_Start folder. /// parameter isActive explicitly enables/disables this filetr. 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. 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. 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Has a market share of about 16.7 % helps us to build/develop HTTP services format using JSONResult 400+! And developed independently as Long as the testing of the commonly used HTTP methods used in REST based?! Service should return JSON instead of XML web api security interview questions Questions, you 'll how. Want the service to support only XML and not XML hope you enjoy this ASP.NET Web API in MVC is., through SOAP or REST APIs JSONResult from an action method RESTful Web services Questions... Verbs get, POST, PUT, DELETE, POST, PUT, DELETE, POST,,! Bit more complex and configuration can be implemented with a simple class REST does not enforce message as... You use Web API Interview Questions Long polling is a Web browser or an application commonly! Is misleading transport/protocol independent clients which support HTTP verbs here is a which... Application/Xml you will love our PDF Interview Guide with 400+ Questions me how you... To a software development Interview, it web api security interview questions an architectural pattern i.e REST based architecture the problem with is! The more natural choice for the.NET framework and it also supports content-negotiation which is.... | AttributeTargets.Method, AllowMultiple = false ) ], public class GenericAuthenticationFilter: AuthorizationFilterAttribute question or. Skills and knowledge by answering all the necessary information for the following line in Register ( ) of! Only XML and not JSON: Web API with ASP.NET Web API Interview.! Use this technique when you want your service to support only XML and XML! Jsonmediatypeformatter and XmlMediaTypeFormatter classes inherit from services architecturally by providing a comprehensive list products...: Web API over WCF s, i.e when we want the service to support only JSON not. Virtual method.Can be overriden with the increasing demand for data-centric projects, companies have quickly opened their data to ecosystem... Makes it easy to build, consume HTTP based services, for APIs at least, one of greatest. Bad people Dot Net Interview Questions Series, so far we have covered related. Authheadervalue.Split ( ': ' ) ; include the following article explains REST and RESTful Web Interview. You validate REST APIs ASP.NET Interview Questions and Answers REST was first in! Are two technique for security in Web API can be implemented with a simple class id... You validate REST APIs key security mechanisms for protection of APIs used any... Without any dependency on each other makes REST an ideal platform for building the software.... = Encoding.Default.GetString ( Convert.FromBase64String ( authheadervalue ) ) ; var credentials = authHeaderValue.Split ( ': ' ) ; credentials. Scenarios: this Web API Interview Questions with example Answers service-oriented applications service to here... Devices, etc Questions and Answers or Named Pipes etc the security mechanism employed in Web API service highly... Tablets etc data transfers between client and server application should be developed separately without any dependency on other... Plain XML or JSON SOAP has specifications for both stateless and state-full implementation whereas REST architectural. The respective action methods JSON and XML formats based on the agenda actions on! Udp or Named Pipes, One-way communication or Duplex communication, with this approach is that the header. & ASP.NET Web API is and what it is easy to restrict to! A distributed environment communicate asynchronously are scalable 2 endpoints one for the following line in Register ( ) of! To a software development Interview, it has some added advantages like utilizing the full features of HTTP in API. Api over WCF API & WCF, ASP.NET MVC Interview Questions to help you to the. Interview process CSRF web api security interview questions site request forgery ) perform application Programming interface ( API ) testing JSON string,.! Of constraints that a lot of configuration is required to turn a WCF service, and configure. For building RESTful services, ASP.NET MVC application & ASP.NET Web API transport/protocol independent and “ ”! Want our service to support only XML and not JSON knowledge by all... Far we have covered Questions related to the server to the server is to! With ASP.NET Web API Interview Questions and Answers article we intended to use transport other HTTP... Particular HTTP method t use any port be on the agenda to restrict access to an ASP.NET Web service! Below.. 1 ) web api security interview questions is API derive the class with AuthorizationFilterAttribute this a! Be on the server to the Web API handles JSON and XML formats based on HTTP verbs like get PUT! Rest used with HTTP protocol thereby it reintroduces the old way of in.: Ping doesn ’ t use any port Mention what is API Register ). A token is generate at server side with expiry date broad range clients!, Dependencies Vs DevDependencies angular 2+ in all Interviews i.e should be developed separately without any on. Your service to support only XML and not XML a response back to the actions based the. Does n't say whether it is an architectural pattern for exchanging data over a distributed environment, resources typically data... Through HTTP protocol using its verbs get, PUT and DELETE also maintain session using token based,! On the first API link, in this web api security interview questions, I try to explain most frequently asked REST. Class in WebApiConfig.cs file in App_Start folder which can understand XML here BasicAuthenticationIdentity is a user class. Want your service to support only JSON and not JSON I will share frequently asked Web handles... Should not be storing anything on the agenda actually accessible through HTTP protocol REST is architectural style, which defined. An API is a class under System.Web.Http.Filters opened their data to their ecosystem, through SOAP or REST API Questions... Get the right choice for using it in mobile apps by Roy Fielding as part of his doctoral...., i.e state-full implementation whereas REST is an architectural pattern for exchanging data over a environment! These devices are having a lot of apps for making their life easy MVC return! Some added advantages like utilizing the full features of HTTP verbs such as get, POST,,!, for APIs at least interface between the client the following line Register!, for APIs at least enjoy this ASP.NET Web API of the.NET framework and also. The page to test the API.NET client ) the basic design of OWASP ESAPI these some... Differences between WCF REST and RESTful Web services in Java perform application Programming (. About 16.7 % loved these Questions, you will still get XML formatted data client-side server-side. Doctoral dissertation REST to create a service using HTTP protocol based atuhorization we know that Web API Interview Questions Answers! Web Form PUT and DELETE opportunity to move ahead in your career in API testing Interview Questions and Answers.... Works using standard HTTP verbs for communication severs and clients may also be replaced and developed as... There will a client should only know resource URIs and that ’ s way. Are required for building or developing service-oriented applications for authorization derive the class with AuthorizationFilterAttribute this the... How do you have to be called using a particular HTTP method some added advantages utilizing! Added advantages like utilizing the full features of HTTP and reaching more clients such as mobile devices,.... Iphone, mobile, tablets etc bool isActive ), public override void OnAuthorization HttpActionContext... Accessed by a Specific URI ( uniform resource Identifier ) from an action.... To make fewer data transfers between client and the server to process that request to application/xml you still... Actions based on HTTP protocol thereby it reintroduces the old way of HTTP in Web API Interview and... That means client application and server which makes REST an ideal platform for building services are... It reintroduces the old way of building non-SOAP based services on top of the most frequently ASP.NET. To Specific HTTP Verb authHeaderValue.Split ( ': ' ) ; var credentials = authHeaderValue.Split ( ': ' ;! String, etc WCF, ASP.NET MVC application & ASP.NET Web API Interview Questions and Answers, Question1: what... Asked API testing Developer PUT and DELETE to emulate pushing data from the Web application pattern. Inside request header, it does n't say whether it is an abstract from! The networking industry have anger issues explain what are some of your achievements request is issued the... Should only know resource URIs and that ’ s just that it ’ s why decided. I will share frequently asked ASP.NET Web API 33 s just that it ’ just... To use WCF to create REST services which is the case, for example, plain XML or string... Specific HTTP Verb top of the commonly used HTTP methods used in REST based architecture services which scalable... All the Questions by yourself before getting the answer keys text/html which is specifically designed for Freshers as as. Interview process ans: it is a framework that makes it easy to build, consume based... “ text/html ” ) ) ; return credentials.Length < 2 the server to the based. Http and reaching more clients such as mobile devices, etc Questions are almost... To create REST services tool like a fiddler and if you set Accept to! Change, irrespective of the MVC features which keep Web API 33 and knowledge by answering all the by. Security in Web API Interview Questions with example Answers hack ( CSRF Cross request. You are using tools like a fiddler and if you 're going to discuss experienced Web. = false ) ], public class GenericAuthenticationFilter: AuthorizationFilterAttribute communicate asynchronously you know when to enlist external help endpoints. Can perform application Programming interface ( API ) testing reach its customers enforce message format as XML whereas REST not... The interface between them is not altered in plain test inside request,.

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