Principal Global Services QA Tester Interview Questions, Process, and Tips

Selenium is a popular open-source automation testing tool used for web application testing.

• Selenium supports multiple programming languages like Java, Python, C#, etc.

• It can automate web browsers and simulate user interactions.

• Selenium WebDriver is the most commonly used component for writing test scripts.

• Selenium Grid allows for parallel test execution on different machines and browsers.

• Example: Selenium can be used t

Regression testing is the process of retesting a software application to ensure that new code changes have not adversely affected existing functionality.

• Regression testing is performed after code changes to verify that the existing features still work correctly.

• It helps in identifying any defects introduced by new code changes.

• Automated testing tools are often used for regression testing to save time and effort.

• Example...read more

Sanity testing is a subset of regression testing that focuses on testing specific functionalities to ensure they still work after changes.

• Sanity testing is a quick and focused testing of specific functionalities to ensure they are still working after changes.

• It is usually performed after major code changes or bug fixes to ensure the core functionalities are not affected.

• Sanity testing is not exhaustive and does not cov...read more

Test cases are detailed steps to test a specific functionality or feature, while STLC (Software Testing Life Cycle) is the process of testing software from planning to closure.

• Test cases are written to verify if a specific functionality works as expected.

• STLC includes phases like requirement analysis, test planning, test design, test execution, and closure.

• Example: Test case for login functionality - Enter valid userna...read more

Different terminologies of testing include unit testing, integration testing, system testing, regression testing, and acceptance testing.

• Unit testing: Testing individual components or modules of a software.

• Integration testing: Testing the interaction between different components or modules.

• System testing: Testing the entire system as a whole.

• Regression testing: Testing to ensure that new code changes do not adversely a...read more

OOPs concepts refer to Object-Oriented Programming concepts which include inheritance, encapsulation, polymorphism, and abstraction.

• Inheritance allows a class to inherit properties and behavior from another class.

• Encapsulation refers to the bundling of data and methods that operate on the data into a single unit.

• Polymorphism allows objects to be treated as instances of their parent class.

• Abstraction hides the complex i...read more