Answer:- Katana is used to develop and host OWIN based web applications. One can also define Katana as the more advanced version of OWIN. It is an open-source project, which is available for all to use. Katana was formulated by the Microsoft Team using the segments of OWIN.

Answer:- Parameter binding in ASP.NET Web API binds the HTTP requests and parameters sent by the client to the server. There could be different types of query strings in the request made by the client. Parameter binding defines how all these HTTP requests, along with parameters to be bound.

Answer:- TDD stands for Test data-driven. It is a development tool. In this, the developer first writes the test cases and tests those cases if they work fine. If not, then the developer looks into the code fixes it. And then again runs tests on it. And these steps are repeated again and again. Till the code does not passes all the tests.

Answer:- Here, ATDD notions Acceptance test data-driven, which is also known as Behavioral driven development. It focuses on the overall functioning of the system. In this, an individual acceptance test, written to fulfill all the functionalities required by the system, is used to perform tests over the code.

Answer:- To achieve this, you will require to remove the XmlFormatter from the Register() section of the WebApiConfig.cs configuration file in the App_Start folder. Now to remove XmlFormatter, you need to include the following lines of code in the configuration file.

Answer:- To achieve this, you will require to remove the JsonFormatter from the Register() section of the WebApiConfig.cs configuration file in the App_Start folder. Now to remove JsonFormatter, you need to include the following lines of code in the configuration file. config.Formatters.Remove(config.Formatters.JsonFormatter) With this, regardless of what was defined. Overriding the values from the accept header web will return the data in the JSON format only.

Answer:- 1. Client and Server Constraint – Specifies that the client will send a request to the server, and then the server will respond to that request. 2. Stateless Constraint – It specifies that the communication between the client and the server is encrypted. And no data of the client is stored anywhere on the server-side. 3. Cacheable Constraint – Cacheable constraint commands the server to send all the data in the cacheable form. So that client need not be required to request data for particular item data dozens of times. 4. Uniform Interface Constraint – This constraint expresses that the interface for the client, regardless of which device they are using, must give the similar and uniform interface 5. Layered System – It helps increase proficiency and reduces the functioning load by distributing the caches with each layer.

Answer:- It depends on the API provider. A few provide their services for free. And, a few may ask you to pay for using it boundlessly. But, the one providing it for free may bound you with some limitations in using their API services.

Answer:- A resource includes all the content on the web page. Including HTML pages, Images, Texts, Videos, and all the data present on it. One needs to request the server to get access to these resources. And, if the service provider approves the request, we get hold of all the content or resources.

Answer:- Payload is the data that an individual wants from the service provider. The HTTP body includes tons of other pieces of information in which the user may not be interested. So, here payload helps to distinguish between the required data and the unimportant data.

Answer:- 1. Omits firewall problems while using HTTP protocols. 2. Uses XML format for sending responses and status messages. 3. Independent and easy to use. 4. Ablest for transporting data in a decentralized environment.

Answer:- 1. Slower than other available services. 2. Support different programming languages that make it inconsistent with its performance. 3. Only one consumer can use the SOAP services at a time.

Answer:- It is the collection of customs obeyed to process and deploy data. It defines the syntaxes to be used, data flow, data type, and management of the administrator. A system of administrators is established, with clusters of protocols. With which two ends can communicate with each other in the same speech.

Answer:- It is preferred to use Web API over WCF, due to the following advantages: 1. Provides much faster and lightweight service 2. Supports multiple data formats 3. Carries full features of HTTP 4. Web API uses SOAP-based protocols, while WCF uses non-SOAP-based services 5. Accessible by a range of clients