50 Best QA Testing Interview Question and Answer in 2026

Introduction

In current times of software development, Quality Assurance (QA) is the core component. As automation, DevOps, and AI-driven testing become more common, businesses are seeking qualified testers who can guarantee product quality and stability.

This guide covers the top 50 QA testing interview questions and answers to prepare for the 2026 mock test. An Automation Software Testing Course will strengthen your core skills and boost your confidence.

Preparation for 2026 QA Interviews

To qualify for the Quality Assurance interview round, the Software Testing Online Course comes as a helping hand. In order to remain competitive, you have to concentrate on:

Learning automation toolsii) Building the groundworkiii) Understanding browser automation techniquesiv) Practicing mock interviews and practical scenariosv) Knowing DevOps and Agile methodologies

QA Testing Interview Question and Answers

Basic Questions

1. What's Software Testing?

Identifying bugs and ensuring the meeting of the required conditions.

2. What's the difference between QA and QC?

Quality Assurance emphasizes bug prevention.Quality Control focuses on identifying defects.

3. What are the different types of testing?

Manual TestingRobotization, TestingFunctional, TestingNon-Functional, TestingRetrogression, TestingPerformance Testing.

4. What's a Test Case?

It is a set of conditions used to combine to know that a system is working properly.

5. What's a Test Plan?

Test Plan is a document that outlines the scope, approach, coffers, and schedule of testing and conditioning.

Manual Testing Questions

6. What is Black Box Testing?

Testing of internal code structure without knowledge.

7. What is White Box Testing?

Testing is done based on internal code structure and reasoning.

8. What is Grey Box Testing?

Grey Box Testing is the combination of Black Box and White Box testing.

9. What is Regression Testing?

This is a Re-testing process of the code that has been changed to check if it has created any disturbances in the existing functionality.

10. What is Smoke Testing?

Smoke testing ensures the stability of the application.

11. What is Sanity Testing?

After minor changes, a quick test is done of particular functionality.

12. What is User Acceptance Testing (UAT)?

User Acceptance Testing is done by the customer to confirm the real-world conditions.

Automation Testing Questions

13. What is Automation Testing?

Automating repeated test cases with tools and scripts.

14. When should you use Automation Testing?

Automation testing is used for repetitive tasks, regression testing, and large datasets.

15. What are popular automation tools?

The popular automation tools are:

SeleniumTestNGJUnitCypress

Selenium-Specific Questions

16. What is Selenium?

Selenium is an open-source web browsing automation tool.

17. What are Selenium components?

The key elements of Selenium Online Course are:

Selenium IDESelenium WebDriverSelenium Grid

18. What is WebDriver?

WebDriver is an automation tool that works with the browsers.

19. What are locators in Selenium?

Locators are used to find web component like

ID

Name

XPath

CSS Selector

20. Difference between XPath and CSS Selector?

XPath is easy to access and supports difficult queries.

CSS uses simpler syntax and works quickly.

21. What is an implicit wait?

It is a global waiting set to stop the WebDriver while inspecting each element.

22. What is an explicit wait?

The Selenium WebDriver stops for inspection for a specific time period.

23. What is Page Object Model (POM)?

POM is used with Selenium to separate test logic from UI elements to create an object storage facility.

24. What is TestNG?

Test Next Generation, or TestNG, is an open-sourced testing structure for Java that is used to simplify the unit, functional, end-to-end, and integration testing. 

API Testing Questions

25. What is API Testing?

API Testing is a software test to make sure of the application's functionality, reliability, performance, and security.

26. What tools are used for API testing?

The most common tools for API Testing are Postman, SoapUI, JMeter, Katalon, and REST Assured.

27. What is REST?

REST, or Representational State Transfer, is a structural program for designing web services.

28. What are HTTP methods?

The clients and servers communicates through HTTP methods, which includes

• GET

• POST

• PUT

• DELETE

• 
  

Performance Testing Questions

29. What is Performance Testing?

Performance Testing is used to oversee a system's performance under workloads.

30. What are the different types of Performance Testing?

The main types of Performance Testing are

Load Testing

Stress Testing

Spike Testing

Soak/Endurance Testing

Scalability Testing

31. What is JMeter?

It is a performance and load testing tool.

Agile & DevOps QA Questions

32. What is Agile Testing?

Agile Testing merges with Agile development cycles for continuous testing, collaboration, and rapid feedback.

33. What is Scrum?

Scrum is a lightweight Agile framework that gradually helps teams develop high-value, complex products.

34. What is CI/CD?

Continuous Integration -  Developers push to a common location after code changes.

Continuous Delivery - Developers merge code and then develop, test, and put it into production automatically.

35. Describe the role of QA in DevOps?

A Quality Assurance person ensures the maintenance of quality, speed, and reliability throughout the development process.

Advanced QA Concepts

36. What is Shift Left Testing?

Early-stage testing in the development lifecycle.

37. What is Shift Right Testing?

Testing is done during the production time.

38. What is Risk-Based Testing?

It is priority-based testing to evaluate the risk for system failures.

39. What is Test Coverage?

It validates an application's code, parameters, or characteristics.

40. What is Defect Life Cycle?

It is a set of stages that a tester needs to follow from detecting a bug to resolving and closing it.

Database Testing Questions

41. What is Database Testing?

Database Testing validates the software architectural integrity, data consistency, and database performance.

42. What is SQL?

Structured Query Language, in short, SQL, is a programming language used for interaction, managing, and controlling stored data.

43. What are joins in SQL?

SQL joins involve methods of connecting two or more rows and tables on a shared field.

Real-World Scenario-Based Questions

44. How do you handle tight deadlines?

Need to prioritize test cases and use automation.

45. How do you report bugs?

Using Jira or GitHub for providing clear and detailed information on bugs.

46. What is severity and priority?

Severity - Impacts on a system due to some loss or failures

Priority - Giving importance to a specific issue to fix it.

47. What would you do if a developer rejects your bug?

Will give proof of the bug detection and cooperate professionally.

Behavioral Questions

48. Why do you want to work in QA?

To improve software quality, resolve problems, and make customers satisfied.

49. What are your strengths as a tester?

Focusing on detail, critical thinking, and communication skills.

50. Where do you see yourself in 5 years?

Wish for a career growth to a senior QA position.

Overview

By 2026, automation, artificial intelligence, and continuous delivery pipelines will have significantly changed the QA field. One needs both theoretical knowledge and practical abilities to prepare for interviews. Mastering these 50 QA testing questions will help you to achieve any Quality Assurance job.