TCS QA Tester Interview Questions and Answers

Oops concepts refer to Object-Oriented Programming principles such as Inheritance, Encapsulation, Polymorphism, and Abstraction.

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

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex implementation det...read more

Manual testing involves human testers executing test cases without automation tools, while automation testing uses tools to execute test cases.

• Manual testing requires human intervention to execute test cases and verify results

• Automation testing involves using tools to automate test case execution and result verification

• Manual testing is time-consuming and prone to human error

• Automation testing is faster, more reliable,...read more

throw is a keyword used to throw an exception in Java, while throws is used in method signature to declare exceptions that can be thrown by the method.

• throw is used to throw an exception explicitly in Java

• throws is used in method signature to declare exceptions that can be thrown by the method

• Example: throw new Exception();

• Example: public void method() throws Exception {};

BDD is a software development approach that focuses on collaboration between developers, testers, and business stakeholders, while Cucumber is a tool used for implementing BDD in testing.

• BDD is a development approach that emphasizes collaboration and communication between different stakeholders, such as developers, testers, and business analysts.

• Cucumber is a testing tool that allows for the implementation of BDD pract...read more

Agile is iterative and flexible, while waterfall is sequential and rigid.

• Agile involves incremental development and frequent feedback loops.

• Waterfall follows a linear approach with distinct phases like requirements, design, development, testing, and deployment.

• Agile allows for changes and adaptations throughout the project.

• Waterfall requires detailed planning upfront and minimal changes once development begins.

• Agile is...read more

Different types of joins in SQL include inner join, left join, right join, and full outer join.

• Inner join: Returns rows when there is a match in both tables

• Left join: Returns all rows from the left table and the matched rows from the right table

• Right join: Returns all rows from the right table and the matched rows from the left table

• Full outer join: Returns rows when there is a match in either table