Top 20 Manual Testing Interview Questions and Answers

Manual Testing is a process in which testers manually execute test cases without using any automation tools. The main goal is to identify bugs, errors, or defects in a software application by simulating the end user’s behavior. It’s essential in ensuring that the software meets the requirements and functions as expected.

1. What is Manual Testing?

Manual Testing is the process of manually executing test cases without using automation tools to find defects in a software application.

2. What is the difference between Manual Testing and Automation Testing?

Manual Testing is performed by humans without tools, while Automation Testing uses scripts and tools to automate the execution of test cases.

3. What are the key stages in Manual Testing?

Key stages include: Requirement analysis, Test planning, Test case development, Test environment setup, Test execution, and Test closure.

4. What is a Test Case?

A test case is a set of conditions or steps to validate the functionality of a specific feature or part of the software.

5. What is Exploratory Testing?

Exploratory Testing involves testers actively exploring the software without predefined test cases, identifying issues through exploration and experimentation.

6. What is the difference between a Bug, Defect, and Error?

Error: A mistake made by a developer. Defect: A flaw found by testers. Bug: An error or defect that causes unexpected behavior in software.

7. What is Black Box Testing?

Black Box Testing focuses on testing the software's functionality without knowing the internal code or structure.

8. What is White Box Testing?

White Box Testing involves testing the internal logic and structure of the code. Testers must have knowledge of the codebase.

9. What is Regression Testing?

Regression Testing ensures that recent code changes do not affect existing functionality.

10. What is UAT (User Acceptance Testing)?

UAT is the final testing phase, where the end-users test the system to verify that it meets their needs and requirements before going live.

11. What is the difference between Functional and Non-Functional Testing?

Functional Testing: Validates the system’s functionality against the requirements. Non-Functional Testing: Checks performance, usability, reliability, etc.

12. What is a Test Plan?

A Test Plan is a detailed document that outlines the test strategy, objectives, resources, schedule, and scope of testing activities.

13. What is a Test Scenario?

A Test Scenario is a high-level description of what should be tested, focusing on one or more functionalities of the application.

14. What is Smoke Testing?

Smoke Testing is a preliminary test to ensure the basic functionality of an application is working after a build or release.

15. What is Sanity Testing?

Sanity Testing is a narrow regression test that checks specific functionality after minor changes to ensure everything works as expected.

16. What is a Test Case Template?

A Test Case Template typically includes test case ID, description, preconditions, test steps, expected result, actual result, and pass/fail status.

17. What are the advantages of Manual Testing?

It allows testers to catch usability and user-experience-related issues, adapt easily to changes, and test scenarios that require human intuition.

18. What is the difference between Priority and Severity in testing?

Severity: Indicates the impact of a defect on the system. Priority: Determines the urgency with which the defect should be fixed.

19. What is Ad-hoc Testing?

Ad-hoc Testing is informal, unstructured testing conducted without any formal planning or documentation, often to find unexpected issues.

20. What is End-to-End Testing?

End-to-End Testing validates the complete functionality of an application from start to finish, covering the entire workflow.

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