Api Testing Interview Questions Naveen

What is the most important difference between API testing and UI testing?

UI testing represents testing by using Graphical User Interface. The main area of focus in this is to test the look and feel of the software application by focusing on how the application is feasible for the end-users, do the functionalities of all the items shown on the UI screen – s, fonts, buttons, layouts etc are appearing properly as expected. On the other hand, API testing ensures the testing of communication of data between various software systems. It mostly falls under the validation of back-end functionality.

What is Rest API?

REST stands for Representational State Transfer. It is a set of functions helping developers in performing requests and receive responses. Interaction is made through HTTP Protocol in REST API.

1 Name some most commonly used HTTP methods?

Some of the HTTP methods are

GET: It enables you to retrieve data from a serverPOST: It enables you to add data to an existing file or resource in a serverPUT: It lets you replace an existing file or resource in a serverDELETE: It lets you delete data from a serverPATCH: It is used to apply partial modifications to a resourceOPTIONS: It is used to describe the communication options for the target resourceHEAD: It asks for a response identical to that of a GET request, but without the response body

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I am sure these questions will help you to prepare more on the basis of real time interview questions.

This is the list of all different interview questions, which were asked in different companies located worldwide.

You can also get an idea in which company these questions were asked, so that you can prepare accordingly.

I have collected these questions from different people who have recently experienced and attended various interviews in different companies.

In this video, we will cover API & WebServices Interview Questions & Answers, which are very important for any interview.

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There are various types of API testing, they are:

  • Functional Testing
  • Unit Testing
  • Load Testing
  • Security Testing
  • UI Testing
  • Interoperability and WS compliance Testing
  • Penetration Testing (Pen Test)
  • Fuzz Testing.
  • What are the most commonly used tools for API testing?

    The most popularly used tool in the market is PostMan. This tool helps to create manual and automated test cases for testing the APIs in a well-designed manner. Apart from this, there are different tools like JMeter, Parasoft SOAtest, SoapUI, Apigee, API fortress, JUnit, etc.

    What is the test environment of API?

    To set up the test environment of API is not a cakewalk. It is a bit complete and demands the configuration of the database as well as a server according to the need of the software. There is no availability of GUI (Graphical User Interface) in this form of testing.

    Once the installation process is over, API is verified for proper functioning. During the whole process API that is invoked by the initial environment is being set up with distinct parameters to examine the test results.

    What’s the procedure to test API’s?

    For testing API’s one must follow the below-mentioned steps:

  • Make a selection of the suite you like to add the API test case to
  • Now choose the test development mode
  • Next demands the development of test cases for the required API methods
  • After this, you need to configure the control parameters of the application and then test the conditions
  • Once done with all the previous steps, configure method validation
  • Now is the time for the execution of the API test
  • After this, you can check test reports and filter API test cases
  • Last but not least, sequence all API test cases. That’s it!
  • Related Article: Manual Testing Interview Questions

    REST API is a set of functions helping developers in performing requests along with receiving responses. Through HTTP protocol interaction is made in REST API.

    The term REST refers to Representational State Transfer. In a very short span of time, it has become an effective standard for API creation.

    Part 1 – API Testing Interview Questions & Answers

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