Which of the following is a common tool used for API testing?

• A. Katalon Studio
• B. Adobe Photoshop
• C. Microsoft Excel
• D. Jira

Answer: (A)

A common tool used for API testing is Katalon Studio. This tool is specifically designed to support various types of testing, including API testing, with features that allow for easy automation and integration with different testing frameworks. Katalon Studio provides a user-friendly interface that simplifies the process of writing, executing, and managing API test cases. It supports REST and SOAP API testing, making it a versatile choice for testers looking to ensure that their APIs behave as expected.

In contrast, other options like Adobe Photoshop, Microsoft Excel, and Jira serve different purposes. Adobe Photoshop is primarily a graphic design tool and does not cater to testing APIs. Microsoft Excel can assist in data management and analysis but lacks the capabilities and specialized features required for executing API tests effectively. Jira is a project management tool focused on tracking issues and project progress, and while it can be used to manage and document testing activities, it does not provide the actual testing functionalities for APIs.