Answer:- Total four main types of Web APIs are known. And, these are as follows: 1. Open APIs – Openly available for all to use. 2. Partner APIs – Not publicly available and requires one to have access to that particular API. 3. Internal APIs – These are private APIs that are created and used by any particular group or organization. 4. Composite APIs – These types of APIs are the union of multiple other APIs. And are practiced to boost up the speed of execution and operation.

Answer:- To keep Web API secured, you can opt for these three ways: 1. HMAC authentication: In HMAC authentication, the service provider processes a unique API key and a Secret Key to its client. And, with the help of those authorization keys, one can call the API. It will generate a hash HMAC signature. Now, by using both the parameters, one can request the server. The same method will take place on the end of the server. And, if both the HMAC signatures matched, then the authorization will be successful. 2. Digital Signature: This method works by covering the message with a secret key generated by the security signature. Now the client will send this private key to the server. Each request will now get signed by the private key, so the server can undoubtedly authorize the request. This signature key must be kept confidential by the owner to avoid any controversy. 3. OAuth: OAuth is one of the most used methods practiced for protecting the security of Web APIs. In this, the users need to log in to the services of the server. And after successfully logging in, the user is provided with a unique auth key that they can use to make requests to the server.

Answer:- 1. It is very lightweight and able to develop Web-based services effectively. 2. Limited data transfer is allowed. 3. The confined data transfer makes it more compatible to use in mobile devices. 4. Beginner-friendly.

Answer:- To do so, you’ll need to define the HTTP verbs as a separate attribute to restrict access.

Answer:- It is a web service that uses REST. REST is a structural pattern used in performing web co-operations. If the HTTP protocol is successful, the service provider sends data in JSON format, HTML, or XML format. It is very lightweight and able to develop Web-based services.

Answer:- API testing includes the testing of Application Programming Interfaces. It checks if the API satisfies all the required demands and if working correctly. API testing includes testing the performance, security, and functionality of the API.

Answer:- There exist several types of API testing. They are: 1. Unit testing 2. Functional testing 3. Run time error detection 4. Security testing 5. Web UI testing 6. Penetration testing 7. Fuzz-testing 8. Interoperability testing 9. WS-* Compliance testing load testing

Answer:- API monitoring is the testing process of performance, security, availability, and functionality of the API.

Answer:- RapidAPI testing is a testing tool that allows one to do comprehensive tests. With RapidAPI testing, you can do tests over REST APIs, SOAP, Web APIs, GraphQL APIs, or any API. It enables API monitoring, effortlessly increases web service performance web services, and allows extensive testing.

Answer:- The main return types that Web API supports are: 1. Void – Here, Void means the invalid status code. Web API returns void when the content is empty. 2. Primitive type and complex type – Helps you write serialized data in the return body. 3. HTTPResponseMessage – Converts the response to the HTTPResponseMessage and sends it to the user. 4. IHTTPActionResult –

Answer:- URI notions Uniform Resources Identifier. URI work is to locate different resources by their identities and, with the help of routed URLs, it loads them on the Web server. And, this allows its consumers to access the resources more quickly and in a simple manner.

Answer:- Formerly it was known as Mime Types or as Content Types. With the name content types, we can understand very clearly that Internet media types determine the type of data contained in the data file. It represents both the type and the subtype of the data file.

Answer:- OWIN notions Open Web Interface for .NET. It is an open-source interface for the .NET self. It defines a standard interface between ASP.NET web applications and the web servers. OWIN helps in unlinking the server and the application, making it compatible with ASP.NET and IIS. Although, doing this is not an easy job. But with the OWIN, we can do this in a manageable way. OWIN uses Appfunc to communicate with other service providers.

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.