Manual Testing Interview Questions and Answers For Freshers

Top 60 Manual Testing Interview Questions and Answers For Freshers

1. What is Software Testing?

Software Testing is the process of evaluating and verifying that a software application or system meets the specified requirements. It involves executing the software with the intent to identify defects, ensure quality, and validate that the product is working as expected. Testing can be done manually or through automated tools and is essential to ensure the reliability, performance, and security of the software.

2.What are the advantages of manual testing?

Manual testing offers several advantages, making it an essential part of the software testing process despite the rise of automation. Here are some key benefits:

• Human Insight and Intuition:

Manual testers can use their intuition, experience, and understanding of the application to discover issues that automated tests might miss. They can adapt to changes in real-time and think like an end-user.

• Exploratory Testing:

Manual testing is well-suited for exploratory testing, where testers can creatively explore the application to find hidden defects without predefined scripts or steps.

• Cost-Effective for Small Projects:

For small projects or one-time tests, manual testing can be more cost-effective than setting up an automation framework, which requires time and resources.

• Flexibility:

Manual testing allows for immediate testing without the need to write or maintain test scripts. This flexibility is especially useful in dynamic projects with rapidly changing requirements.

• Usability Testing:

Manual testing is essential for assessing the user experience, including the look and feel of the application. Testers can provide feedback on the overall user interface and usability, which is difficult to achieve with automation.

• Adapting to Changes:

Manual testing can easily adapt to changes in the application or testing environment, while automated tests might require significant rework to accommodate changes.

• Testing from an End-User Perspective:

Manual testers can approach the application from an end-user perspective, identifying issues that might not be apparent in automated tests, such as workflow issues, inconsistencies, or subjective visual elements.

• Lower Initial Investment:

Manual testing doesn’t require an upfront investment in tools and infrastructure, making it accessible to teams with limited resources or those starting a new project.

• Immediate Feedback:

Testers can provide immediate feedback during the development process, enabling quicker identification and resolution of issues.

• Better for Complex Test Scenarios:

Some complex scenarios, particularly those involving human judgment, are better suited for manual testing. For example, verifying the accuracy of a visual output or testing features that rely on complex user interactions.

3. What are the disadvantages of manual testing?

Manual testing, while valuable, also comes with several disadvantages, especially when compared to automated testing. Here are some key drawbacks:

• Time-Consuming:

Manual testing can be slow, especially for large projects or applications with frequent updates. Each test case must be executed manually, which can take a significant amount of time.

• Prone to Human Error:

Since manual testing relies on human execution, there’s a higher risk of mistakes, such as missing steps, misinterpreting results, or overlooking defects.

• Not Suitable for Repetitive Tasks:

Repeating the same test cases manually is tedious and can lead to fatigue, reducing the accuracy and thoroughness of the testing process.

• Limited Test Coverage:

Due to time and resource constraints, manual testing often leads to limited test coverage. It’s challenging to manually test all possible combinations of inputs, environments, and scenarios.

• Less Efficient for Regression Testing:

Manual testing is less efficient for regression testing, where the same set of tests needs to be run repeatedly after every code change. Automation is more suitable for this type of testing.

• Scalability Issues:

As the application grows, the number of test cases increases, making it difficult to scale manual testing. Automating tests can help manage larger test suites more effectively.

• Lack of Reusability:

Test cases in manual testing are typically not reusable in the same way that automated test scripts are. Every test execution requires a fresh manual effort.

• Resource Intensive:

Manual testing requires more human resources, which can be costly. It often necessitates a team of testers to cover all necessary scenarios, increasing labor costs.

• Limited in Continuous Integration/Continuous Deployment (CI/CD):

Manual testing does not integrate well with CI/CD pipelines, which rely on automated tests to provide immediate feedback on code changes.

• Inconsistent Results:

The results of manual testing can vary depending on the tester’s experience, mood, or understanding of the test cases. This can lead to inconsistent testing outcomes.

• Inability to Perform Large-Scale Performance Testing:

Manual testing is not practical for performance, load, or stress testing, where thousands or millions of users need to be simulated. Automated tools are necessary for such tests.

6. What is the difference between developer vs tester?

• Role: A developer is responsible for writing and implementing code to create software applications, while a tester is responsible for validating and verifying the software to ensure it meets the required standards.

• Focus: Developers focus on building the product, writing code, and implementing features. Testers focus on finding defects, ensuring quality, and verifying that the software works as intended.

• Mindset: Developers often think about how to make the software work, while testers think about how to break the software to identify potential issues.

7. Why is Software Testing Required?

• Ensures Quality: Testing ensures that the software meets quality standards and performs as expected.

• Identifies Defects: Early detection of defects can prevent costly fixes later in the development cycle or post-release.

• Validates Requirements: Testing verifies that the software meets the specified requirements and behaves as expected under different scenarios.

• Enhances User Experience: By ensuring that the software is bug-free and user-friendly, testing helps improve the overall user experience.

• Reduces Risk: Testing minimizes the risk of software failure, security vulnerabilities, and other issues that could lead to business losses or reputational damage.

8. Explain the Software Development Life Cycle (SDLC).

The Software Development Life Cycle (SDLC) is a systematic process used to develop software applications. It consists of several phases that guide the development from concept to deployment and maintenance. The main phases include:

• Requirement Analysis: Gathering and documenting business and technical requirements.

• Design: Creating architectural and detailed design of the software.

• Implementation (Coding): Writing the actual code for the software.

• Testing: Verifying that the software works as intended and is free of defects.

• Deployment: Releasing the software to production for end-users.

• Maintenance: Providing ongoing support, updates, and bug fixes after deployment.

9. Explain the Software Testing Life Cycle (STLC).

The Software Testing Life Cycle (STLC) is a sequence of specific activities conducted during the testing process to ensure the quality of software. It includes:

• Requirement Analysis: Understanding what needs to be tested based on requirements

• Test Planning: Developing the testing strategy, including resources, schedules, and tools.

• Test Case Development: Writing detailed test cases and preparing test data.

• Test Environment Setup: Preparing the necessary environment where the testing will take place.

• Test Execution: Running the test cases and reporting any defects found.
• Test Closure: Finalizing testing activities, documenting findings, and preparing the test closure report.

10. What is the role of a tester in a software development team?

A tester’s role in a software development team is to ensure the quality and functionality of the software by identifying defects and verifying that the software meets the specified requirements. Testers design and execute test cases, report bugs, collaborate with developers to resolve issues, and ensure that the final product is reliable, secure, and user-friendly.

11. What are the different levels of testing?

The different levels of testing are:

• Unit Testing: Testing individual components or pieces of code for correctness.

• Integration Testing: Testing the interaction between integrated components or systems.

• System Testing: Testing the complete and integrated software system to verify that it meets the requirements.

• Acceptance Testing: Testing conducted to determine whether the software meets the acceptance criteria and is ready for delivery. This includes Alpha and Beta Testing.

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

• Functional Testing: Focuses on verifying that the software functions as expected according to the requirements. It tests the user interfaces, APIs, databases, security, and other functional aspects of the application.
• Non-Functional Testing: Focuses on the non-functional aspects of the software such as performance, usability, reliability, scalability, and security. It ensures that the software performs well under various conditions and meets the quality standards.

13. Explain the difference between alpha testing and beta testing.

• Alpha Testing: Conducted by the internal testing team or developers at the developer’s site. It is the first phase of testing after development and aims to identify bugs before releasing the software to real users.
• Beta Testing: Conducted by a limited number of actual users at their own locations, after Alpha Testing. It helps identify any issues that weren’t caught during Alpha Testing and provides real-world feedback before the final release.

14. What’s the difference between verification and validation in testing?

• Verification: The process of evaluating work products (documents, code, etc.) to ensure that they meet the specified requirements at each phase of the development process. It answers the question, “Are we building the product right?”
• Validation: The process of evaluating the final software product to ensure it meets the business needs and user requirements. It answers the question, “Are we building the right product?”

15. What is Smoke testing?

Smoke testing is a preliminary test to check whether the basic functionalities of the software are working. It is often referred to as a “build verification test” and is done to ensure that the critical features are functioning correctly before proceeding with more detailed testing.

16. What is Sanity testing?

Sanity testing is a subset of regression testing performed when a small change is made to the software. It verifies that the specific functionality or bug fix works as expected and that the changes have not adversely affected the surrounding areas of the application.

17. What is Regression testing?

Regression testing is the process of re-running previously conducted tests to ensure that new changes or enhancements have not introduced new defects into existing functionality. It helps to confirm that the recent code changes do not negatively impact the already tested codebase.

18. What is the difference between Smoke Testing and Sanity Testing?

• Smoke Testing: A type of testing that checks whether the most critical functionalities of a software application are working correctly. It is a broad but shallow approach, often performed after a new build to ensure the stability of the software for further testing.

• Sanity Testing: A type of testing that focuses on a narrow area of functionality after changes or fixes have been made. It is a more focused and deep approach to ensure that the specific function or bug fix works as expected and hasn’t affected related areas.

19. What is test coverage?

Test coverage is a metric used to measure the amount of testing performed by a set of test cases. It indicates the extent to which the codebase, features, or requirements have been tested. High test coverage helps ensure that most parts of the application have been validated, reducing the risk of undetected bugs.

20. What is a test case?

A test case is a set of specific inputs, execution conditions, and expected results developed to verify a particular functionality of the software. It is a step-by-step guide that testers follow to perform tests and determine whether a feature is working as intended.

21. How do you write a Test Case?

Writing a test case typically involves the following steps:

• Test Case ID: A unique identifier for the test case.
• Test Description: A brief explanation of what the test case will verify.
• Preconditions: Any setup or conditions that must be met before executing the test case.
• Test Steps: The specific actions or inputs to be performed.
• Expected Result: The expected output or behavior of the software when the test steps are executed.
• Actual Result: The actual outcome when the test is executed (filled in after running the test).
• Postconditions: Any actions to be taken after the test execution.
• Status: Indicates whether the test passed, failed, or is blocked.

22. What is a test scenario?

A test scenario is a high-level description of a specific functionality or part of the application to be tested. It represents a situation or use case that could occur in the real world. Test scenarios help in identifying what to test and guide the creation of more detailed test cases.

23. What is a Test Plan, and what does it include?

A Test Plan is a document that outlines the strategy, approach, resources, and schedule for testing activities. It serves as a roadmap for the testing process. A Test Plan typically includes:

• Test Objectives: What is to be achieved through testing.
• Scope: The features or functions to be tested.
• Test Strategy: The overall approach to testing, including types of testing to be performed.
• Resources: The tools, environments, and people involved in testing.
• Schedule: The timeline for testing activities.
• Test Deliverables: The documents, reports, and other outputs from the testing process.
• Risk Management: Identifying potential risks and mitigation strategies.
• Entry and Exit Criteria: Conditions that define when testing can start and when it is considered complete.

24. What is the difference between Test Case and Test Scenario?

• Test Scenario: A high-level idea of what to test, focusing on a particular aspect of the application. It is broader and can lead to the creation of multiple test cases.
• Test Case: A detailed, step-by-step guide that includes specific inputs, actions, and expected outcomes to verify a particular functionality.

25. What is a Test Environment?

A Test Environment is a setup of hardware, software, network configurations, and other necessary elements where testing is conducted. It replicates the production environment to ensure that the software behaves as expected under real-world conditions.

26. What is test data?

Test data refers to the inputs that are used to execute test cases. It includes any data needed to perform testing, such as usernames, passwords, files, configurations, or any other data that helps to verify the correctness of the software. Test data can be either static (pre-defined) or dynamic (generated during the test).

27. What is a Traceability Matrix?

A Traceability Matrix is a document that maps and traces the relationship between requirements and test cases. It ensures that all requirements are covered by test cases, helping to track the testing progress and ensuring that no functionality is missed during testing.

28. What is the purpose of the Requirement Traceability Matrix (RTM)?

The Requirement Traceability Matrix (RTM) is used to ensure that all requirements defined for a system are tested in the test cases. It provides a way to trace the requirements throughout the testing process, ensuring that each requirement has been properly tested and validated.

29. What is a test script?

A test script is a set of instructions or code written to perform a specific test on a software application. It can be manual (written steps for a tester to follow) or automated (code that executes a test automatically). Test scripts are used to validate that the software behaves as expected under certain conditions.

30. What is a testbed?

A testbed is an environment configured for testing, including hardware, software, network configurations, and other necessary components. It provides the infrastructure needed to execute test cases and simulate real-world conditions in which the software will operate.

31. Explain the Defect Life Cycle.

The Defect Life Cycle, also known as the Bug Life Cycle, describes the various stages that a defect or bug goes through from its identification to its closure. The typical stages include:

• New: The defect is reported for the first time.
• Assigned: The defect is assigned to a developer or team for fixing.
• Open: The defect is being actively worked on.
• Fixed: The developer has fixed the defect.
• Retest: The tester retests the application to verify the fix.
• Closed: The defect is verified as fixed and closed.
• Reopened: If the defect persists after the fix, it is reopened.
• Deferred: The defect is not fixed in the current release and will be addressed later.
• Rejected: The defect is not considered valid or is a duplicate.

32. What’s the difference between a bug and a defect?

• Bug: A bug is an informal term used to describe any error, flaw, or fault in software that causes it to produce incorrect or unexpected results.
• Defect: A defect is a more formal term used in software development to refer to an issue where the software deviates from its requirements or specifications. Essentially, all bugs are defects, but not all defects are referred to as bugs.

33. What is the difference between Severity and Priority in defect management?

• Severity: Severity refers to the impact of a defect on the functionality of the software. It indicates how serious the defect is in terms of system functionality, ranging from minor (cosmetic issues) to critical (system crashes).
• Priority: Priority refers to the urgency with which the defect should be fixed. It is determined by how soon the defect needs to be addressed, taking into account the project’s timeline and business needs.

34. How do you prioritize defects?

Defects are prioritized based on their severity and the impact on the business or user experience. Typically, critical defects affecting major functionality or causing system crashes are given the highest priority, while minor cosmetic issues are given lower priority. Business requirements, deadlines, and potential risks also influence defect prioritization.

35. What is the difference between an error and a failure?

• Error: An error refers to a mistake made by a developer that leads to incorrect or unexpected behavior in the software. It can be due to incorrect code, logic, or understanding of requirements.

• Failure: A failure occurs when the software does not perform as expected in a real-world scenario, typically because of an underlying error or defect. It represents the deviation from the expected result.

36. What is Defect Density?

Defect Density is a metric used to measure the number of defects in a software component relative to its size (e.g., per thousand lines of code). It helps in assessing the quality of the code and identifying areas that may require more thorough testing or attention.

37. How do you perform Risk Analysis in software testing?

Risk Analysis in software testing involves identifying and evaluating the potential risks that could affect the quality of the software or the success of the project. This includes analyzing:

• Business Risks: The impact on the business if the software fails.
• Technical Risks: Risks related to technology, architecture, or integrations.
• Resource Risks: Availability and skills of the team, tools, and environment.
• Time Risks: Deadlines and schedules that could impact the delivery. Testers then prioritize testing efforts on the high-risk areas to mitigate potential issues.

38. What is Boundary Value Analysis?

Boundary Value Analysis (BVA) is a testing technique that focuses on the values at the boundaries of input domains. Since defects often occur at the edges rather than in the center of input ranges, BVA tests the minimum, maximum, and just inside/outside boundary values to catch potential issues.

39. What is Equivalence Partitioning?

Equivalence Partitioning is a testing technique that divides input data into equivalent partitions or classes. Each partition represents a set of inputs that should produce the same behavior, so only one test case is needed for each partition. This technique reduces the number of test cases while still covering all possible scenarios.

40. What is Cause-Effect Graphing?

Cause-Effect Graphing is a testing technique that involves creating a graphical representation of the logical relationships between input conditions (causes) and output results (effects). This technique helps identify complex conditions and their corresponding effects, ensuring comprehensive test coverage by generating test cases based on these relationships.

41. What is a Test Summary Report?

A Test Summary Report is a document that provides an overview of the testing activities, results, and overall quality of the software after testing has been completed. It includes details such as the number of test cases executed, passed, failed, defect status, test coverage, and any risks or issues encountered. The report helps stakeholders understand the testing outcomes and make informed decisions about the software’s release.

42. What is Exploratory Testing?

Exploratory Testing is a type of testing where the tester actively explores the software without predefined test cases. Testers use their knowledge, experience, and intuition to identify potential issues and areas of risk. This approach is often used to discover unexpected bugs and test scenarios that may not have been considered during formal test planning.

43. What is Black Box Testing?

Black Box Testing is a testing technique where the tester evaluates the functionality of the software without any knowledge of its internal code, structure, or implementation. Testers focus on inputs and outputs, verifying that the software behaves as expected according to the requirements. This method is commonly used for functional testing.

44. What is White Box Testing?

White Box Testing, also known as Clear Box or Glass Box Testing, is a testing technique where the tester has knowledge of the internal code, structure, and implementation of the software. Testers examine the code, paths, loops, and conditions to ensure that the software works correctly from a technical perspective. This method is commonly used for unit testing and code coverage analysis.

45. What is Grey Box Testing?

Grey Box Testing is a combination of Black Box and White Box Testing. The tester has partial knowledge of the internal workings of the software, allowing them to design test cases that cover both the functional and structural aspects of the application. This approach helps in identifying issues related to integration, data flow, and security.

46. What is Acceptance Testing?

Acceptance Testing is a type of testing performed to determine whether the software meets the acceptance criteria defined by the customer or end-users. It is the final testing phase before the software is released, and it ensures that the product is ready for use. Acceptance Testing can include User Acceptance Testing (UAT) and Business Acceptance Testing (BAT).

47. What is Ad-hoc Testing?

Ad-hoc Testing is an informal and unstructured testing approach where testers attempt to find defects without any specific plan or documentation. It is often done without predefined test cases, relying on the tester’s creativity, experience, and understanding of the software. Ad-hoc Testing is useful for quickly identifying obvious defects.

48. What is Usability Testing?

Usability Testing is a type of testing that evaluates how user-friendly and intuitive the software is. It involves observing real users as they interact with the software to identify any usability issues, such as confusing navigation, unclear instructions, or inefficient workflows. The goal is to improve the overall user experience.

49. What’s GUI testing?

GUI Testing, or Graphical User Interface Testing, focuses on testing the visual elements of a software application. This includes verifying that the interface behaves as expected, looks consistent across different devices and platforms, and meets the design specifications. GUI Testing checks elements such as buttons, menus, icons, and layouts to ensure they function correctly and provide a good user experience.

50. What is Unit Testing?

Unit Testing is a type of testing where individual components or units of code are tested in isolation. The goal is to validate that each unit performs as expected and meets its design specifications. Unit Testing is typically performed by developers during the development phase and is considered a fundamental part of the testing process, helping to catch defects early in the development cycle.

51. What is System Integration Testing?

System Integration Testing (SIT) is the process of testing the integration of different modules or components of a software system. The goal is to ensure that these integrated parts work together as expected, interacting correctly and exchanging data as designed. SIT helps identify issues related to interfaces, data flows, and interactions between different systems or components before they are tested as a whole.

52. What is User Acceptance Testing (UAT)?

User Acceptance Testing (UAT) is the final phase of the testing process, where the software is tested by the end-users or clients to ensure it meets their requirements and is ready for production. UAT focuses on validating that the software performs in real-world scenarios and fulfills the business needs. It often involves executing predefined scenarios or test cases that represent typical user tasks.

53. What is Positive and Negative Testing?

• Positive Testing: Involves testing the software with valid and expected inputs to ensure it behaves as intended. It verifies that the software works correctly under normal conditions.
• Negative Testing: Involves testing the software with invalid, unexpected, or incorrect inputs to ensure it handles such scenarios gracefully. It verifies that the software can manage errors and edge cases without crashing or producing incorrect results.

54. When should testing end?

Testing should end when the following conditions are met:

• All critical and high-priority test cases have been executed and passed.
• The software meets the acceptance criteria defined in the test plan.
• All identified defects have been addressed or deferred with proper justification.
• The remaining risks are acceptable to stakeholders.
• The project timeline or budget constraints require the testing to stop.
• The product is stable, and no new critical defects are being reported.

55. What are the key challenges in Manual Testing?

Key challenges in Manual Testing include:

• Repetitive and Time-Consuming: Manual execution of test cases can be tedious and time-intensive.
• Human Error: The risk of mistakes due to manual processes, such as missing steps or incorrectly documenting results.
• Limited Test Coverage: Manually testing all possible scenarios can be impractical, leading to gaps in coverage.
• Inconsistent Results: Different testers may produce varying results due to subjective interpretations.
• Scalability: Manual testing may struggle to keep up with frequent releases or large projects.

56. What is Configuration Management in testing?

Configuration Management in testing involves tracking and controlling changes in the software’s configuration throughout the testing process. It includes managing test cases, test data, test environments, and software versions to ensure consistency and traceability. Configuration Management helps in maintaining the integrity of the test assets and enables reproducibility of tests.

57. What is the role of Quality Assurance (QA) in software development?

Quality Assurance (QA) in software development is responsible for ensuring that the software development process follows the defined quality standards and procedures. QA focuses on improving the development process by identifying and preventing defects early, conducting reviews and audits, and ensuring that the final product meets the required quality levels. QA is a proactive approach to quality management.

58. What is the difference between QA and QC (Quality Control)?

• Quality Assurance (QA): QA is process-oriented and focuses on improving the processes used to develop software. It is about ensuring that the right processes are in place to prevent defects.
• Quality Control (QC): QC is product-oriented and focuses on identifying defects in the final product. It involves the actual testing and inspection of the software to ensure it meets the quality standards.

59. What’s the role of documentation in Manual Testing?

Documentation in Manual Testing plays a critical role by providing clear guidelines, records, and references for the testing process. It includes test plans, test cases, test scripts, defect reports, and test summary reports. Proper documentation ensures consistency, repeatability, and traceability of tests, making it easier to manage the testing process, communicate with stakeholders, and comply with regulatory requirements.

60. How do you handle changes in requirements during the testing phase?

Handling changes in requirements during the testing phase involves:

• Impact Analysis: Assessing how the changes will affect the existing test cases, timelines, and resources.
• Updating Test Cases: Modifying or creating new test cases to align with the updated requirements.
• Re-prioritization: Re-assessing the priorities and focusing on critical areas that are impacted by the changes.
• Communication: Keeping the testing team and stakeholders informed about the changes and their impact.
• Regression Testing: Performing regression testing to ensure that the changes haven’t introduced new defects into existing functionality.