Infosys QA Engineer Interview Questions, Process, and Tips

Understanding OOP concepts, finding Xpath, and performing mouse actions are essential skills for a QA Engineer.

• Understand the principles of Object-Oriented Programming (OOP) such as inheritance, polymorphism, encapsulation, and abstraction.

• Use Xpath to locate elements on a web page by their attributes or structure.

• Perform mouse actions like click, double click, drag and drop using Selenium WebDriver or other automation

NUnit is a unit testing framework for .NET applications.

• NUnit is used for writing and running automated unit tests in C# and other .NET languages.

• It provides various attributes and assertions to help with testing.

• NUnit can be integrated with Visual Studio for easy test execution and debugging.

Verification ensures the product is built right, while validation ensures the right product is built.

• Verification focuses on the process of building the product according to specifications

• Validation focuses on whether the product meets the customer's needs and expectations

• Verification is done through reviews, inspections, walkthroughs, and meetings

• Validation is done through testing, user feedback, and acceptance criter...read more

Smoke testing is a subset of regression testing, focusing on testing major functionalities to ensure stability. Sanity testing is a subset of regression testing, focusing on testing specific functionalities to ensure basic functionality.

• Smoke testing is a shallow and wide approach, while sanity testing is a deep and narrow approach.

• Smoke testing is performed on stable builds, while sanity testing is performed on unstab...read more

Retesting is testing the same functionality again to ensure the defect is fixed, while regression testing is testing the unchanged parts of the application to ensure new changes do not affect existing functionality.

• Retesting focuses on the defect fix, while regression testing focuses on ensuring existing functionality is not impacted by new changes.

• Retesting is done after a defect is fixed, while regression testing is ...read more

SQL joins are used to combine data from two or more tables based on a related column between them.

• Joins are used to retrieve data from multiple tables in a single query

• There are different types of joins such as inner join, left join, right join, and full outer join

• Inner join returns only the matching rows from both tables

• Left join returns all the rows from the left table and matching rows from the right table

• Right join...read more