40+ Tester Interview Questions and Answers

Answers to common software testing interview questions.

• SDLC (Software Development Life Cycle) is a process followed by software development teams to design, develop, and test high-quality software.

• STLC (Software Testing Life Cycle) is a process followed by software testing teams to ensure that the software meets the requirements and is free of defects.

• RTM (Requirement Traceability Matrix) is a document that maps and traces user requirements with test cases to ensure that all ...read more

The question is about a tester interview and includes various topics such as output manipulation, finding largest and smallest elements, OOPs concepts in Python, difference between find_element and find_elements, negative indexing in Python, and list comprehension.

• 1. The desired output is 'TTHHEE'.

• 2. Find the largest and smallest elements from a given list.

• 3. Discuss the OOPs concepts used in Python.

• 4. Explain the difference between find_element and find_elements.

• 5. Explain h...read more

Testing is the process of evaluating a system or its component(s) with the intent to find whether it satisfies the specified requirements or not.

• Testing is a process of identifying defects or errors in software applications.

• Waterfall model is a linear sequential approach where testing is done at the end of the development cycle.

• Agile method is an iterative approach where testing is done throughout the development cycle.

• Test case is a set of conditions or variables under which...read more

In five years, I envision myself as a senior tester, leading projects and mentoring new talent while enhancing my skills in automation.

• I aim to become a senior QA tester, overseeing complex projects and ensuring high-quality deliverables.

• I plan to specialize in automation testing, using tools like Selenium and JUnit to improve efficiency.

• I want to mentor junior testers, sharing my knowledge and helping them grow in their careers.

• I hope to contribute to the development of test...read more

Production bugs should be handled with urgency and a systematic approach.

• Identify the root cause of the bug

• Prioritize the bug based on its impact on users

• Create a plan to fix the bug

• Test the fix thoroughly before deploying it to production

• Communicate the issue and the solution to stakeholders

• Monitor the fix to ensure it is working as expected

A list in Python and Java is a collection of elements that are ordered and mutable.

• In Python, lists are created using square brackets [] and can contain elements of different data types.

• In Java, lists are part of the Collection framework and are created using the ArrayList class.

• Lists in both languages allow for adding, removing, and accessing elements by index.

ADAS system in Powertrain helps optimize engine performance for fuel efficiency and emissions control.

• ADAS in Powertrain can adjust engine timing and fuel injection to improve efficiency

• It can also monitor exhaust emissions and adjust systems to reduce pollution

• Example: ADAS in Powertrain can detect when a vehicle is idling unnecessarily and shut off the engine to save fuel

Python is a high-level programming language known for its simplicity and readability. ADAS stands for Advanced Driver Assistance Systems, which are technologies designed to assist drivers in the driving process.

• Python is a versatile programming language used for web development, data analysis, artificial intelligence, and more.

• ADAS systems include features like adaptive cruise control, lane departure warning, and automatic emergency braking.

• Python is commonly used in developi...read more

Java is a programming language known for its object-oriented programming (OOP) features.

• Java is a high-level, class-based, object-oriented language.

• It supports encapsulation, inheritance, and polymorphism.

• Objects are created from classes, allowing for modular and reusable code.

• Java uses OOP principles to organize and structure code efficiently.

Black box testing is a software testing technique where the internal structure, design, and implementation of the system are not known to the tester.

• Black box testing focuses on the functionality of the system.

• Test cases are designed based on the system's requirements and specifications.

• The tester does not have access to the source code or the internal workings of the system.

• It verifies if the system behaves as expected from the end-user's perspective.

• Examples include input v...read more

Test cases can be prioritized based on risk, importance, complexity, and frequency of use.

• Identify critical functionalities and prioritize test cases accordingly

• Consider the impact of failure on end-users and prioritize tests that cover those scenarios

• Prioritize tests that cover high-risk areas of the application

• Prioritize tests that cover frequently used features

• Prioritize tests that cover complex functionalities

• Use risk-based testing to prioritize tests based on the likelih...read more

SDLC stands for Software Development Life Cycle. It is a process used to develop software applications.

• SDLC is a systematic approach to software development that includes planning, designing, coding, testing, and maintenance.

• It provides a framework for developers to follow and ensures that the software is developed efficiently and meets the requirements.

• The different phases of SDLC include requirements gathering, system design, coding, testing, deployment, and maintenance.

• Eac...read more

Alpha testing is done by internal teams before the software is released to external users, while beta testing is done by external users before the software is officially released.

• Alpha testing is done by internal teams within the organization, while beta testing is done by external users outside the organization.

• Alpha testing is conducted in a controlled environment, while beta testing is conducted in a real-world environment.

• Alpha testing focuses on finding bugs and issues w...read more

Java tester rules ensure effective testing practices, maintainability, and quality assurance in software development.

• Follow the AAA pattern: Arrange, Act, Assert. Example: Set up test data, execute the method, and verify the output.

• Use meaningful test names that describe the purpose. Example: 'shouldReturnTrueWhenInputIsValid'.

• Isolate tests to avoid dependencies. Example: Use mocks for external services.

• Maintain test independence; one test should not affect another. Example: ...read more

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 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.

• Examples of regression testing include running test cases that cover ...read more

I am familiar with various testing frameworks to efficiently organize and execute test cases.

• I have experience with popular testing frameworks such as Selenium, JUnit, TestNG, and Cucumber.

• Frameworks help in structuring test cases, providing reusable components, and generating detailed reports.

• Familiarity with frameworks allows for easier maintenance and scalability of test suites.

Approximately 70% of our testing process is automated.

• We have automated regression tests for critical functionalities

• Automation scripts are used for load testing and performance testing

• Continuous integration pipelines include automated tests

• Approximately 70% of test cases are automated

XPath is a powerful language for navigating XML documents, offering various methods to locate elements efficiently.

• XPath can be absolute (e.g., /html/body/div) or relative (e.g., //div) for flexibility in locating nodes.

• It supports various functions like text(), contains(), and starts-with() for precise element selection.

• XPath allows for complex queries, such as selecting elements based on attributes (e.g., //input[@type='text']).

• It can traverse the XML tree in multiple ways,...read more

Java program to find all links in a given text

• Use regular expressions to match URLs in the text

• Iterate through the text and extract all URLs

• Store the URLs in an array of strings

Java program to reverse a String

• Create a char array from the input String

• Use two pointers to swap characters from start and end of the array

• Convert the char array back to a String and return

Yes, I have experience with automation testing using tools like Selenium and Appium.

• Experience with automation testing tools like Selenium and Appium

• Ability to write test scripts in languages like Java, Python, or JavaScript

• Knowledge of test automation frameworks like TestNG or JUnit

C# is a programming language developed by Microsoft for building applications on the .NET framework.

• C# is widely used for developing Windows applications, web applications, and games.

• It is an object-oriented language with features like type safety, garbage collection, and scalability.

• C# allows for easy integration with other languages and libraries, making it versatile for various development needs.

OOP (Object-Oriented Programming) is a programming paradigm based on the concept of objects, which can contain data and code to manipulate that data. Design refers to the process of creating a plan or blueprint for a system or application.

• OOP focuses on creating objects that interact with each other to accomplish tasks

• Design involves creating a structure or layout for a system or application

• In OOP, classes define the blueprint for objects, while design patterns provide soluti...read more

Scrum is an agile framework for managing work on complex projects.

• Scrum involves breaking down work into small, manageable tasks called user stories.

• It emphasizes frequent communication and collaboration among team members.

• Scrum uses time-boxed iterations called sprints to deliver incremental value.

• Roles in Scrum include Product Owner, Scrum Master, and Development Team.

• Popular tools for Scrum include Jira, Trello, and Asana.

I use Selenium for automated testing of web applications.

• Creating test scripts using Selenium WebDriver

• Executing test scripts on different browsers

• Verifying expected outcomes against actual results

• Generating test reports

Automation testing is the use of software to execute test cases and compare actual outcomes with expected outcomes.

• Automation testing saves time and effort by automating repetitive tasks.

• It increases test coverage and accuracy.

• Tools like Selenium, Appium, and JUnit are commonly used for automation testing.

API testing is a type of software testing that involves testing APIs directly.

• API testing involves testing the functionality, reliability, performance, and security of APIs.

• It focuses on verifying that the API meets the requirements and works as expected.

• API testing can be done manually or using automated tools like Postman or SoapUI.

• Examples of API testing include testing RESTful APIs, SOAP APIs, and web services.