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

Answer:- 1. Set-up the environment: Produce entity, set up conveniences, and split up data 2. Execution: Footstep to apply the framework comprised logging 3. Verification: Check if the authorization works properly 4. Reporting: Report the Progress, malfunction, and bugs found 5. Clean up: Examine the state

Answer:- • Discovery testing • Usability testing • Security testing • Automated testing • Documentation testing

Answer:- 1. Firstly understand the commitment of API. 2. Create an approach list. 3. Apply suitable techniques. 4. Insert parameters according to the requirement. 5. Now test different cases and note the outputs. 6. Match outputs with the expected result.

Answer:- Unit testing is a testing strategy that examines the code before and makes sure if the code is operating correctly without any bugs. In this test cases are formulated for all the functions so we can easily track the fault caused by the change.

Answer:- The common bugs found in API testing are: Unused flags Less reliability Security Problems Performance Issues. Multithreading problems Missing or redo functionality API response time is very high Response Data is not structured rightly The incorrect approach of valid arguments Complexity in connecting and getting a response Collapses to control error conditions appropriately

Answer:- It is for all. Anyone can use it. And, modified APIs have made it available almost for all to use. There’s a lot of APIs available in the industry. One can use any of the APIs unless it is insular to a group or organization.

Answer:- Once the client successfully makes its requests, the client gets disconnected from the server. And the request gets processed by the server back to the client. In this whole process, at no point, the client and the server are connected. It defines that HTTP is connectionless. And the server is partially attached to the client directly.

Answer:- HTTP is independent of any data or media type unless both the client and the server know to handle the data type forwarded to each other. And so, the client is requested to specify the type of media before making the request.

Answer:- Windows Communication Foundation WCF Rest uses the full features of HTTP. It also supports all the MVC features that make it more simple and robust. WCF is basically used to build Service-Oriented Applications(SOA).