Common Interview Questions for Software QA Testers

1

Can you tell me about a time you had to work closely with software developers and product managers? How did you manage communication with everyone?

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The candidate should recount a collaborative scenario, explaining how they facilitated clear communication through regular meetings, shared documentation, and feedback loops to ensure alignment on quality goals and issue resolution.

2

What is meant by the workbench concept?

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A workbench is a document that explains how an activity should be completed. Often, it is referred to as a step, phase, or task. Workbenches serve as platforms for building and monitoring testers' work structures. Using this method, it is possible to divide tasks into each phase and to reach the customer's expectations using the initial data. Every workbench has five tasks, which are as follows: - Input. - Execute. - Check. - Production output. - Rework.

3

What is regression testing and why is it important?

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Regression testing ensures that new changes or bug fixes don't negatively impact existing functionality. It verifies that previously developed and tested code still performs after code updates, maintaining software integrity and stability throughout the development lifecycle.

4

What is the difference between verification and validation in software testing?

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Verification checks if things follow rules and design plans correctly. It looks at software pieces like code, documents, or test cases to make sure they match requirements and specifications. Validation checks if things work properly for their intended use and users. It confirms that the software does what it's supposed to do and that the right software is being built to meet customer needs.

5

What is Stress Testing?

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Stress Testing assesses system performance under extreme conditions.

6

Can you discuss the importance of test coverage and how you ensure comprehensive testing?

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Test coverage measures the percentage of code or functionality tested. To ensure comprehensive testing, I map test cases to requirements, prioritize critical paths, and monitor coverage metrics.

7

How do you perform exploratory testing, and what are its advantages?

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Exploratory testing involves exploring the software without predefined test cases. Testers use their creativity and domain knowledge to uncover defects and usability issues.

8

What are the contents of test plans and test cases?

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A test plan outlines the overall testing approach, including the scope, objectives, timelines, and required resources. It's essentially a blueprint for how testing will be conducted. On the other hand, test cases are more detailed, describing specific steps for testing individual functionalities, along with expected outcomes and actual results.

9

What is functional testing?

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Functional testing is a process that testers use to check the individual features of software applications to ensure they meet the company's requirements. The process involves validating the software's behavior. Advantages of functional testing include that it facilitates the tracking process, makes it easy for testers to assess the system in several conditions, and helps testers know if there are any issues with functionality before they become a problem.

10

What is black-box testing?

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Black-box testing is a testing technique where the tester does not have access to the internal workings or code of the application being tested. Instead, they focus on validating the software's output based on given inputs, often by testing the system's functionality against its specifications or requirements. Key characteristics of black-box testing include: - Testers do not need to know the code: The focus is entirely on the behavior and output of the application, based on the user's perspective. - Functional testing: Black-box testing mainly verifies if the software functions correctly according to the functional requirements, ensuring that inputs lead to expected outputs. - Types of black-box testing: This includes testing techniques like equivalence partitioning, boundary value analysis, and decision table testing. - Focus on user interface and workflows: Black-box testing is especially useful for validating user interfaces, APIs, and system behaviors from the end-user perspective. Black-box testing is often used for system testing, acceptance testing, and regression testing, where the main goal is to ensure that the system behaves as expected from an external viewpoint.

11

How do you support or mentor junior QA team members?

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I review their approach, give clear feedback, and encourage better thinking.

12

Can you explain how you design test cases and determine test coverage?

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- Review the requirements and specifications of the software. - Identify the critical and high-risk areas of the software. - Create test cases based on different scenarios, both positive and negative, that cover the critical and high-risk areas. - Document the test cases and include information such as the objective, steps to perform the test, and expected results. To determine test coverage, I use different techniques, such as coverage analysis and risk-based testing, to ensure that all the essential functionalities of the software have been tested and that there are no significant gaps in the test coverage. The goal is to achieve comprehensive coverage while also balancing the effort and resources required to perform the testing.

13

How many defects did you detect in your last project?

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Before saying how many defects you detected in your last project, first start saying about the type of project you worked and how many test cases you executed. I have worked for an ecommerce website where I have executed overall of 200 test cases and found around 45 defects.

14

What is Top-Down Approach?

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Testing takes place from top to bottom. High-level modules are tested first and then low-level modules and finally integrating the low-level modules to a high level to ensure the system is working as intended. Stubs are used as a temporary module if a module is not ready for integration testing.

15

You're asked to test a payment gateway. What are the key scenarios?

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Follow the steps below for testing the payment gateway: - Test the functionality of the payment gateway, validating payment flow for various methods (credit cards, wallets, UPI, etc.) and testing payment confirmation emails and invoices. - Check boundary and edge cases by attempting transactions with expired cards or insufficient funds. - Test by entering payments with maximum and minimum allowable amounts. - Perform security testing of the gateway to ensure compliance with PCI DSS standards and verify data encryption during transactions. - Test the payment gateway behavior by simulating network failures during payment processing, declined transactions, or session timeouts. - Validate how the system behaves when a refund is due or when transactions are cancelled.

16

Production bug reported, but cannot be reproduced. How do you proceed?

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Check logs, environment differences, user data, and recent deployments.

17

how do you choose what to test when there isn't enough time to test everything?

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Prioritize based on risk, business impact, and critical functionality. Focus on high-risk areas, core features, and recent changes.

18

Explain API Testing and show your approach to API Testing.

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API testing involves verifying that application programming interfaces (APIs) function correctly, reliably, and securely. The approach to API testing includes:Understand the API Specification: Review the API documentation to understand endpoints, methods, request parameters, and response formats. Setup Testing Environment: Configure the testing environment with necessary tools like Postman, SoapUI, or RestAssured. Create Test Cases: Develop test cases for various scenarios including positive, negative, edge cases, and security tests. Execute Tests: Send requests to the API endpoints and validate the responses against expected outcomes. Analyze Results: Check for correctness, performance, and error handling in the API responses. Report and Fix Defects: Document any issues found and collaborate with the development team to resolve them.

19

A defect that could have been removed during the initial stage is later removed. What effect does this have on the cost?

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If a defect is discovered during the project's initial phase, it is important that the defect is removed during that phase rather than afterwards. The cost of fixing a defect increases greatly if it is delayed until a later stage in the development cycle. Following is a diagram showing how the cost of a fixing defect increases throughout the phases. It is more cost-effective to eliminate defects during the design phase, but it becomes twenty times more expensive to do so during maintenance.

20

Tell me about a time you discovered a critical bug late in the development cycle. How did you handle it?

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Two days before a major product launch, I was running final regression tests when I discovered that password resets weren't working in one specific browser. This was a critical path feature, and the launch was non-negotiable. I immediately documented the exact steps to reproduce it, including the specific browser and OS. I created a Slack post to the dev team with a clear title—‘CRITICAL: Password reset broken in Safari'—and included a detailed bug report with a video capture. I didn't just log it and walk away. I stayed available, re-tested patches as they came in, and confirmed the fix worked across multiple browsers. The team fixed it within four hours, and we caught the issue before any customers experienced it. That early discovery probably saved us from a support nightmare post-launch.

21

What do you understand about Traceability Matrix (TM) in the context of quality assurance?

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A Traceability Matrix is a document that connects any two baseline documents that require a many-to-many link to ensure that the relationship is complete. It's used to keep track of requirements and make sure they're being met on the present project. The following are the three major components of a traceability matrix: - Forward Traceability: This matrix is used to determine whether the project is progressing in the appropriate direction and for the correct product. It ensures that each specification is applied to the product and that each specification is adequately tested. It connects test cases to requirements. - Backward or reverse Traceability: It is used to verify that the present product is still on track. The goal of this form of traceability is to ensure that we are not expanding the project's scope by adding code, design features, testing, or other activities not stated in the requirements. It connects requirements to test cases. - Bidirectional Traceability: This traceability matrix ensures that all criteria are covered by test cases in both directions (forward and backward). It examines the impact of a change in requirements caused by a work product defect, and vice versa.

22

How well do you work with others?

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Many QA teams have team members who are from all corners of the world. QA engineers must be comfortable communicating with people of all backgrounds and all levels of language proficiency.

23

How do you prioritize test cases?

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Prioritizing test cases ensures that the most critical functionalities are tested first and that resources are used efficiently. There are several factors to consider when prioritizing test cases: - Business Impact: Prioritize test cases that cover critical business functions or features. High-priority test cases are those that, if failed, would have a significant negative impact on users, customers, or the business. - Risk: Test cases that address high-risk areas of the application, such as security vulnerabilities, data loss, or system crashes, should be given higher priority. - Complexity: Complex or high-value features that have multiple interdependencies or intricate workflows should be prioritized, as they are more likely to fail. - Customer Use: Test cases for features that are frequently used by customers or are core to the application's functionality should be tested first. - Previous Issues: If the application has had past issues or defects in a particular area, it's a good idea to prioritize testing in that area. - Test Case Type: Smoke and regression test cases are usually high priority because they verify basic functionality and ensure that new changes haven't introduced defects in existing functionality. - Test Case Execution Time: If a particular test case takes too long or is resource-intensive, it may be deprioritized or scheduled for later in the testing cycle, unless it's critical. By prioritizing test cases effectively, you ensure that the most important and high-risk areas of the software are thoroughly tested first, maximizing the return on testing efforts.

24

What is the difference between Quality Assurance, Quality Control and Testing?

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Quality assurance deals with creating a strategy to define and implement quality standards. Quality control, on the other hand, uses the method established by Quality Assurance to find problems and improve the software. Testing is the actual process of finding bugs and defects. Check if your interviewee understands the nuances of these processes and is aware of the different people or teams in the organization that are usually tasked with each responsibility.

25

What should be included in a bug report?

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A bug report contains a record of the Tester's observations that may be helpful to Developers or management. A bug report should include a title, description of the bug, the product version, status of the bug, steps to reproduce the bug, who the bug is being assigned to and its resolution.

26

What governance or compliance considerations apply when using AI agents in regulated testing environments?

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Example Answer: In regulated industries like BFSI or healthcare, every QA artifact is a potential audit record. If an AI agent generated a test case, the system needs to log who created it (agent or human), what inputs it was based on, when it was reviewed, and who approved it. This is called provenance tracking. You also need explainable logic, where the agent can articulate why it generated a specific test or flagged a specific failure. And all agent actions need to be stored in tamper-proof, searchable audit trails. The EU AI Act, reaching full enforcement in 2026, is making this even more critical for teams operating in European markets.

27

What is the difference between a test bed and a test environment?

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- Test Bed: A test bed is the physical or virtual environment set up specifically for testing. It includes all the hardware, software, network configurations, databases, and other components needed to execute the tests. The test bed provides the infrastructure that supports the execution of tests. - Example: A test bed might include a particular version of an operating system, a database server, and a test application configured with test data. - Test Environment: A test environment is a broader term that refers to the combination of software, hardware, network configurations, and testing tools needed for testing. It is the environment where the test execution takes place, including test data, test tools, and specific configurations required for running the tests. - Example: A test environment could involve multiple test beds (e.g., different operating systems or versions of an app) set up for different types of testing, such as functional, security, or performance testing. In short, test bed refers more specifically to the actual configuration or setup, while a test environment encompasses the entire system and conditions required for testing.

28

What is Test Case?

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A Test Case is a set of conditions and inputs designed to verify a particular functionality.

29

What tools have you used and why?

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The entire tool selection is based on project requirements. If the priority is speed and ease of use in testing dynamic web applications, then Cypress and Playwright are the top choices. However, for broader ecosystem and cross-browser testing, Selenium remains the top pick.

30

Why is attention to detail important for a QA tester?

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With good attention to detail, testers can create software that has peak quality. This ensures all tasks and projects meet the specifications of the business and mitigates minor details or defects. This skill is important because a lot of web application development occurs in an integrated development environment (IDE) where candidates cannot see the final result, but testers can use attention to detail to ensure they build the code and systems perfectly.

31

what is the test pyramid?

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The test pyramid is a concept that describes the ideal distribution of tests: many unit tests at the base, fewer integration tests in the middle, and even fewer end-to-end tests at the top.

32

What is your approach to identifying and reporting defects?

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Many QA testers follow this workflow when identifying and reporting defects: - Replicate the defect and collect details such as steps to reproduce, screenshots, logs, and environment info - Assign a severity level based on the issue's impact - Log the defect with clear descriptions, expected vs. actual results, and reproduction steps - Communicate and collaborate with developers to determine root cause and solutions - Follow up until the defect is fixed and verified

33

Give a real-world SDLC vs STLC example.

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Designing a feature is SDLC. Writing and running test cases is STLC.

34

What is your ideal working environment?

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Answers vary, but should reflect preferences for collaboration, tools, culture, and autonomy.

35

What is your approach to test planning?

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Example Answer: I don't believe in a one-size-fits-all test plan. My approach depends entirely on the project's complexity and the business goals, but I generally lean toward a Hybrid Test Planning method. This allows me to combine the strategic focus of risk-based testing with the structural rigor of model-based testing. In 2026, we've seen that the most effective plans are those that use historical defect data and AI-driven insights to identify high-risk areas before we even start scripting. Here is how I break down these methodologies when building a plan: - Risk-Based Test Planning: I prioritize testing based on "Probability of Failure" and "Business Impact." For instance, in a banking app, I'd ensure the fund transfer logic is bulletproof before I even look at UI cosmetics. We focus our heaviest automation effort on these high-risk zones. - Model-Based Test Planning: I use visual models—like state-transition diagrams or flowcharts—to map out system behavior. This is invaluable for complex features like a chatbot conversation path or a multi-step checkout. It helps the team visualize the logic and ensures we haven't missed a "dead end" in the user journey. - Hybrid Test Planning: This is my standard for most projects. I'll use a risk-based approach to define the scope (what we test first) and a model-based approach to design the actual cases (how we test it). It provides the flexibility needed for modern DevOps environments.

36

What is a Test Case?

Reference answer

Test Case is a detailed document that shows how to check if a part of the software works correctly. It lists the steps to follow, the information needed, and what the result should be. Test cases help make sure the software does what it's supposed to by providing clear instructions. It includes: - Test Case ID: A unique name or number to identify the test case. - Title/Description: What the test case is meant to check. - Preconditions: What needs to be set up before running the test. - Test Steps: The actions to perform during the test. - Test Data: The specific information needed for the test. - Expected Result: What should happen if the software is working right. - Actual Result: What actually happens when the test is run. - Status: Whether the test passed or failed. - Postconditions: What should be true after the test. The Benefits of an Effective Test Case include the following- - Good test coverage. - Reusable test cases. - Helps to avoid training for every new test engineer. - Improved quality of the software. - More satisfied customers. Read More - Test Case.

37

Explain the term "test automation," and can you provide examples of test automation tools or frameworks you've worked with?

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Test automation involves using scripts or tools to automate repetitive testing tasks. Examples include Selenium, Appium, and JUnit.

38

Can you introduce yourself, walk through your professional career?

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Aim is to let the candidate feel comfortable and match their words with the CV. The answer should summarize roles, key projects, and relevant skills.

39

What strategies do you employ for efficient bug tracking and reporting, and how do you prioritize and communicate issues to development teams?

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I use bug tracking tools like Jira, prioritize issues based on severity and impact, and communicate them clearly to developers with detailed steps to reproduce.

40

How do you test a feature that depends on a third-party system that is currently down?

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When the third-party system is down, and I need to test a feature, I would go for a roundabout way of testing the feature: - Using mocking/stubbing so that the scenario is recreated. - Validating request/response structure. - Testing fallback logic. - Verifying error-handling scenarios. - Keeping a checklist for complete integration testing later.

41

What is Concurrency Testing?

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Concurrency Testing also known as Multi-user Testing checks the software performance when multiple users are logged into the system and perform actions simultaneously. - It helps to monitor the effect on the system when multiple users are performing the same action at the same time. - It helps to monitor the system for deadlocking, locking, and single-threaded code.

42

Can you explain the SDLC and Agile methodology?

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QA engineers must understand their role and where it fits into the ecosystem.

43

What is Bottom-Up Approach?

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It is a reciprocate of the Top-Down Approach. Testing takes place from bottom to up. Lowest level modules are tested first and then high-level modules and finally integrating the high-level modules to a low level to ensure the system is working as intended. Drivers are used as a temporary module for integration testing.

44

Describe your approach to test data management, including creating and maintaining test data, and how you ensure data privacy and security during testing.

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I create and manage test data sets, ensuring data privacy and security by using sanitized or anonymized data and complying with data protection regulations.

45

What are the main QA and test apps/platforms are and what do they do...

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Zephyr, TestRail, Qase, Selenium, Playwright, Appium, etc. I usually don't care what systems a person has worked with in the past, but I might want to hear their opinions about what they liked or didn't like. If someone really hates a tool that we use, that might be an issue for them as a member of the team.

46

Why developers shouldn't test the software they wrote?

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Developers make poor testers. Here are some reasons why: - They try to test the code to make sure that it works, rather than testing all the ways in which it doesn't work. - Since they wrote it themselves, developers tend to be very optimistic about the software and don't have the correct attitude needed for testing: to break software. - Developers skip the more sophisticated tests that an experienced tester would perform to break the software. They follow the happy path to execute the code from start to finish with proper inputs, often not enough to get the confidence to ship software in production. However, it doesn't mean that developers shouldn't test the software before sending it to the tester. Developer testing helps find many bugs that are caused by programming errors. These are hard to find for a tester because they don't always have access to the source code.

47

Difference between severity and priority?

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Severity refers to the impact a bug has on the system's functionality. It measures how critical a bug is in terms of the system's performance and user experience. Severity levels can range from critical (system crashes) to minor (cosmetic issues).Priority, on the other hand, indicates the urgency with which a bug should be fixed. It is determined based on factors like business needs, customer requirements, and project deadlines. High-priority bugs need immediate attention, while low-priority bugs can be scheduled for future releases.

48

What do you understand about stubs and drivers? Differentiate between them.

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- Stub: Stubs are created by software developers to be used in place of modules if the respective modules have not been constructed, are missing in the development stage, or are currently unavailable during Top-down testing. A stub is a module that mimics the functionality of an unavailable module. Stubs are used when lower-level modules are required but are currently unavailable. For instance, suppose you have three different modules: Login, Home, and User. Assume that the login module is ready for testing, but the two minor modules Home and User, which are invoked by the login module, are not. At this point, a piece of fake code is written to replicate the Home and User functions. The stubs are the dummy parts of the code. - Driver: Drivers are similar to stubs in that they serve the same goal, but they are more complicated and are utilised in Bottom-up integration testing. Drivers are also used to operate in the absence of essential modules when some modules are absent and unavailable at the time of testing a specific module due to unforeseen circumstances. When high-level modules are missing, drivers are utilised. They can also be used when lower-level modules are missing. - Let's use the same example as before. Assume that the User and Home modules are ready to test this time, but the Login module is not. Because the Login module returns data to Home and User, a dummy piece of code is developed to emulate the Login. The following table lists the differences between Stub and Driver: | Stub | Driver | |---|---| | In Top-Down Integration Testing, stubs are employed. | In Bottom-Up Integration Testing, drivers are used. | | Stubs are analogous to software modules that are in the development stage. | Drivers are accustomed to invoking the component that must be tested. | | Stubs are primarily utilised when low-level modules are unavailable. | Drivers are mostly used to replace high-level modules, they can also be used to replace low-level modules in specific cases. | | They are also referred to as "called programs". | They are also referred to as "calling programs". | | To test the features and functionality of the modules, stubs are used. | If the core module of the software is not developed for testing, the drivers are used. | | If upper-level module testing is completed but lower-level module development is ongoing, the stubs are taken into consideration. | If lower-level module testing is completed while upper-level module development is underway, the drivers are taken into consideration. | | Stubs are used to test the main module when lower-level modules are unavailable or in a partially completed state. | When higher-level modules are absent or in a partially built state and we wish to test the lower(sub)-module, we use drivers. |

49

Can you explain the importance of test documentation and how you maintain it?

Reference answer

Test documentation is important in software testing as it serves as a record of the testing process and results. It helps to ensure that the tests are repeatable and provides valuable information for future reference. To maintain test documentation, I follow best practices such as regularly updating the test cases and test results, using a version control system to keep track of changes, and ensuring that the documentation is easily accessible and readable for all stakeholders.

50

What is static software testing?

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Static testing is a technique in which you test the software without actually executing it. It involves doing code walkthroughs, code reviews, peer-reviews, or using sophisticated tools such as eslint, StyleCop to perform static analysis of the source code. Static testing is typically performed during software development.

51

What is a test matrix?

Reference answer

A test matrix is a testing tool that is used to present the quality, effort, plan and resources required to complete the entire process of Software Testing, the testing phase of the SDLC.

52

What is Fuzz Testing?

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Fuzz testing is used to identify coding errors and security loopholes in an application. By inputting a massive amount of random data to the system in an attempt to make it crash to identify if anything breaks in the application.

53

Explain what is a testware in the context of quality assurance.

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Testware is a collection of software created for the specific purpose of software testing, particularly software testing automation. For example, automation testware is created to run on automation frameworks. All utilities and application software that work together to test a software package but do not necessarily contribute to operational purposes are referred to as testware. As a result, testware is only a working environment for application software or portions thereof, rather than a static configuration. It contains artifacts created during the testing process that is needed to plan, develop, and execute tests, such as documentation, scripts, inputs, expected outcomes, set-up and clear-up processes, files, databases, environment, and any other software or tools used during testing. Both verification and validation testing methodologies are used to create testware. Testware, like software, consists of codes and binaries, as well as test cases, test plans, and test reports. Testware should be preserved and faithfully maintained under the direction of a configuration management system.

54

What is automation testing?

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Automation testing refers to the use of specialized software tools to automatically execute test cases, compare the results with expected behavior, and report outcomes. Unlike manual testing, where testers perform actions manually, automation allows testers to create scripts that can run test cases automatically, reducing the need for human intervention. Automation testing is particularly useful in scenarios where: - The same tests need to be executed repeatedly (e.g., regression testing). - The application is large or has complex workflows. - Speed and efficiency are crucial, especially in Agile environments where frequent changes to the software are made. Key benefits of automation testing include: - Faster Test Execution: Automated tests can run much faster than manual tests, allowing for quicker feedback in CI/CD pipelines. - Reusability: Test scripts can be reused across different versions of the application, reducing repetitive work. - Accuracy: Automation reduces human errors that may occur during manual testing. - Continuous Testing: Automation enables continuous testing and integration, allowing teams to test more frequently and identify issues early in the development cycle. Popular automation testing tools include Selenium, Appium, JUnit, TestNG, and QTP (QuickTest Professional). These tools help write, execute, and manage automated tests for web and mobile applications.

55

Are you willing to cut corners to save time?

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The correct answer is NO. All test cases need to be run, and making assumptions frequently leads to issues down the road.

56

What is a Defect?

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The variation between the actual results and expected results is known as a defect. If a developer finds an issue and corrects it by himself in the development phase then it's called a defect.

57

What is Defect Clustering?

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Defect clustering in software testing means that a small module or functionality contains most of the bugs or it has the most operational failures.

58

What is accessibility testing?

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Accessibility testing evaluates whether a software application or website is usable by all users, including people with visual, auditory, motor, or cognitive disabilities. It checks compatibility with assistive technologies such as screen readers, magnifiers, and voice recognition tools.

59

What is an API? And why would you use one in Software Testing?

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API stands for Application Programming Interface and refers to how two or more computer programmes, or software components, communicate with each other using requests and responses. One use of API is to collect data required for an application. Let's take a currency exchange app as an example. Instead of creating the tech to collect the exchange rates yourself, you could request it from the exchange rates API.

60

What is Defect Age?

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Defect age can be defined as the time interval between date of defect detection and date of defect closure. Defect Age = Date of defect closure – Date of defect detection Assume, a tester found a bug and reported it on 1 Jan 2016 and it was successfully fixed on 5 Jan 2016. So the defect age is 5 days.

61

What is your experience with automation testing tools?

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Example Answer: I'm a big believer in using tools that reduce maintenance. We've found that the most efficient teams are the ones that don't spend their Fridays fixing brittle locators. - For Web: I use Katalon for its AI self-healing or Playwright for its raw speed. - For Mobile: Appium is my go-to, but I always pair it with Visual AI to catch UI regressions that code-based checks miss. - For APIs: I use Postman for testing, but I rely on Contract Testing to make sure our microservices don't break each other.

62

How do you decide when testing is 'enough'?

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When risk is acceptable and critical paths are stable.

63

What is Verification in software testing?

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Verification is the process, to ensure that whether we are building the product right i.e., to verify the requirements which we have and to verify whether we are developing the product accordingly or not. Activities involved here are Inspections, Reviews, Walk-throughs.

64

What is a test environment, and why is it important?

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A test environment refers to the combination of hardware, software, network configurations, and data that is used to test an application. It is important for several reasons: - Reproducibility: A well-defined test environment ensures that tests can be reproduced in a controlled setting, reducing environmental variables that might interfere with the test results. - Consistent Testing: It ensures that testing is done under consistent and stable conditions, eliminating variations between different testing cycles. - Simulates Real-World Conditions: By creating a test environment that mimics production, QA teams can ensure that the software will perform as expected when deployed to users. - Isolation: The test environment is isolated from production systems, ensuring that any testing-related issues or failures do not affect live systems or users. - Customization: Test environments can be customized with different configurations, such as different browsers, operating systems, or hardware setups, to ensure comprehensive testing across platforms. - Risk Mitigation: Testing in a dedicated environment reduces the risks of introducing defects into the production environment, as the environment is isolated from other systems. A proper test environment allows for accurate, reliable testing and better quality assurance.

65

Difference between functional and nonfunctional testing?

Reference answer

Functional Testing: Focuses on verifying that the software functions according to the specified requirements. It checks the behavior of the system and ensures that all features work as intended. Examples include unit testing, integration testing, system testing, and acceptance testing. Nonfunctional Testing: Focuses on validating the non-functional aspects of the software, such as performance, security, usability, and compatibility. It ensures that the software meets certain criteria like response time, scalability, and reliability. Examples include performance testing, security testing, usability testing, and compatibility testing.

66

What is the purpose of test planning?

Reference answer

Test planning is a crucial activity in the software testing lifecycle that ensures the systematic and structured execution of testing tasks. It involves the creation of a test plan document that outlines the strategy, objectives, scope, and approach for testing. The purpose of test planning is to ensure that testing is thorough, efficient, and aligned with the project's objectives. Key aspects of test planning include: - Defining Objectives: Clearly stating what the testing aims to achieve, such as validating functional requirements, ensuring system performance, or ensuring user satisfaction. - Scope of Testing: Determining which parts of the application will be tested, including which features, functionalities, or modules are in scope or out of scope for testing. - Resource Allocation: Identifying the tools, environments, and personnel required to conduct the testing. - Test Strategy: Deciding the overall approach, such as manual or automated testing, and specifying the levels of testing (unit, integration, system, etc.). - Timeline and Milestones: Establishing a timeline for testing, with deadlines for different phases of testing, and setting milestones to track progress. - Risk Management: Identifying risks and challenges that may affect testing (e.g., unclear requirements, changes in scope, or resource constraints) and planning mitigation strategies. Test planning ensures that the testing process is well-organized, transparent, and focused on achieving the desired quality outcomes.

67

Can you explain how you would test a REST API?

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I would start by identifying the requirements and understanding the functionality of the API. Then, I would create test cases to validate the API's functionality, including positive and negative test cases to check for expected and unexpected behaviors. I would also check for proper error handling and validate the API's response codes, data format, and data consistency. Additionally, I would use tools such as Postman to send API requests and verify the responses.

68

A critical bug affecting the checkout process was reported in production. How would you handle this situation?

Reference answer

Prioritize and Assess the Impact: - Evaluate the severity and frequency of the issue. - Identify affected users and systems. - Reproduce the Bug: - Use logs, screenshots, or error messages to replicate the issue in a test environment. - Implement a Temporary Fix: - Collaborate with developers to provide a hotfix or workaround to minimize user impact. - Perform Root Cause Analysis: - Investigate why the bug was not caught during testing. - Review test cases, automation scripts, and scenarios for gaps. - Validate and Deploy: - Test the fix thoroughly in staging. - Ensure regression testing covers related functionality.

69

Any experience with the CI/CD integration? Which tool have you used?

Reference answer

Answers vary, such as Jenkins, GitLab CI, or Azure DevOps, with details on pipeline configuration and automated test execution.

70

What is dynamic software testing?

Reference answer

In contrast to static testing, dynamic software testing tests the software when it's executing. The tester runs the software in a test environment and goes through all the steps involved, entering the inputs and verifying the actual output with the expected result.

71

How should you answer the question 'Describe a time you found a critical bug?'

Reference answer

This kind of question falls somewhere between all of the question categories. But this is where you can showcase the traits that make you the right software QA engineer for this job! Don't skimp on details about a past similar experience, your documentation preferences, and how you might voice your doubts constructively.

72

Explain CI/CD and its role in QA.

Reference answer

CI (Continuous Integration) is when devs merge code often, triggering auto-builds and tests to catch issues early. CD (Continuous Delivery/Deployment) automates pushing tested code to production. In QA, it means running automated tests in pipelines to ensure quality at every stage, faster releases, less manual work, and early bug detection.

73

In manual testing what are stubs and drivers?

Reference answer

In software testing, Stubs and drivers are used in manual testing to test the functionality of a system without having to use the actual system. A stub is a small piece of code that is called by the Module under Test. A driver is a small piece of code that calls the Module to be tested.

74

What is a Module?

Reference answer

A ‘Module' is a software component that has a specific task. It can be a ‘link', which can go inside to its component detail. (This is NOT a very common question for the interview. This is just for your knowledge, if you don't know what a module is.)

75

What risks should a team consider when adopting AI agents for testing?

Reference answer

Example Answer: The three biggest risks are over-trust, under-governance, and unclear ROI. Over-trust means assuming the AI is always right and reducing human review too quickly. Under-governance means not logging what the AI does, which creates compliance problems in regulated industries, and there is no audit trail if something goes wrong. Unclear ROI means adopting AI tools because they're trendy without measuring whether they actually reduce time-to-release or improve defect detection. Gartner has noted that a significant number of agentic AI projects are expected to be cancelled due to escalating costs and unclear value. The teams that succeed are the ones that start with a specific problem, measure the outcome, and scale only what proves itself.

76

What is ISO 9001 in the context of software QA?

Reference answer

ISO 9001 is a globally recognized quality management standard. In software QA, it refers to the implementation of quality management principles to ensure continuous improvement and consistent delivery of high-quality software.

77

How do you approach learning any necessary new skills, technology, or tools to improve your QA processes?

Reference answer

The candidate should explain a proactive learning approach, such as taking online courses, attending workshops, reading documentation, experimenting with new tools in sandbox environments, and applying knowledge to real projects.

78

Compare black-box testing vs white-box testing.

Reference answer

Black-box testing focuses on validating the functionality of the software without considering its internal code structure. Testers interact with the application's user interface and provide inputs to verify outputs, ensuring the software meets user requirements.White-box testing, on the other hand, involves testing the internal structures or workings of an application. Testers need knowledge of the code and use techniques such as statement coverage, branch coverage, and path coverage to ensure thorough testing. Black-box testing is user-focused, while white-box testing is developer-focused, and both are essential for comprehensive software testing.

79

Tell me the difference between black-box, white-box and grey-box testing

Reference answer

Black-Box Testing: Black-box testing is used in acceptance and system testing, only testing the external behaviour of the programme, rather than software functions. White-Box Testing: White-box testing is typically used in integration and unit testing, and takes internal workings into consideration – unlike black-box. Grey-Box Testing: As the name suggests, grey-box testing uses a combination of black and white testing methods, taking into account the end product as well as its internal workings.

80

What is the difference between verification and validation?

Reference answer

Verification ensures the product is being developed according to design specifications (doing the processes right), while validation ensures the developed product meets the user's actual needs (building the right product). Verification checks processes; validation checks final output.

81

What is a test scenario?

Reference answer

A test scenario is a high-level description of what needs to be tested.

82

You are responsible for testing a mobile app that integrates with GPS and payment systems. What key areas would you focus on?

Reference answer

Functional Testing: - Validate GPS integration by simulating location changes. - Test payment gateway with various payment methods. - Performance Testing: - Assess app responsiveness under high user loads. - Measure app performance in poor network conditions. - Usability Testing: - Check for intuitive navigation and accessibility compliance. - Validate app behavior on different screen sizes and resolutions. - Security Testing: - Ensure sensitive data, such as credit card details, is encrypted. - Test for vulnerabilities in third-party integrations. - Device Compatibility Testing: - Run tests across various operating systems and device models.

83

What is Black Box Testing?

Reference answer

Black Box Testing is a software testing method in which testers evaluate the functionality of the software under test without looking at the internal code structure. This can be applied to every level of software testing such as Unit, Integration, System and Acceptance Testing.

84

Explain what a user story is and why it is used in Software Testing

Reference answer

A user story is a persona created to put Testers and Developers in the shoes of the end-user, fully understand their requirements and create an aligned product. A user story will often contain real names, characteristics, pain points and aim to recreate a real-life interaction with the software.

85

How do you decide what to automate?

Reference answer

I automate stable, high-impact flows with clear ROI.

86

How do you ensure that software releases meet the required quality standards?

Reference answer

We follow a structured approach that involves creating and executing test cases as early as possible, identifying and reporting defects, collaborating with development teams, and regularly monitoring the progress of the project. I also adhere to industry best practices for software testing and quality assurance, and actively participate in code and design reviews to catch any potential issues early in the development process.

87

What is Retesting?

Reference answer

To ensure that the defects which were found and posted in the earlier build were fixed or not in the current build. Say, Build 1.0 was released. Test team found some defects (Defect Id 1.0.1, 1.0.2) and posted. Build 1.1 was released, now testing the defects 1.0.1 and 1.0.2 in this build is retesting.

88

What is regression testing, and why is it important?

Reference answer

Regression testing is the process of re-testing the software after changes, such as bug fixes or feature updates, to ensure that existing functionality is not affected. It is crucial for maintaining software quality over time.

89

Can QA exist without testing?

Reference answer

Yes. QA also includes standards, reviews, and process improvements.

90

Can you discuss the differences between quality assurance (QA) and software testing?

Reference answer

Quality assurance is a proactive process focused on improving and maintaining the quality of the development process itself. It ensures that proper methodologies and standards are in place, which reduces the chances of defects in the final product. Software testing, on the other hand, is a reactive process that happens after the development phase to identify and fix any defects or bugs.

91

What is the Severity and Priority in Software Testing?

Reference answer

Severity is defined as the extent to which a particular defect can create an impact on the software. Severity is a parameter to denote the implication and the impact of the defect on the functionality of the software. and Priority is defined as a parameter that decides the order in which a defect should be fixed. Defects having a higher priority should be fixed first. Read More - Severity and Priority in Software Testing.

92

What is Dynamics 365 Business Central and how does it fit into the ecosystem?

Reference answer

Dynamics 365 Business Central is an ERP solution designed for small and mid-sized businesses, managing finance, supply chain, sales, and project management. It integrates seamlessly with other Dynamics modules like CRM, providing end-to-end business management capabilities in the broader Dynamics 365 ecosystem.

93

What is risk-based testing?

Reference answer

Risk-based testing prioritizes features based on likelihood of failure and business impact. High-risk features get more detailed testing while low-risk areas get lighter testing. Risk is calculated as Probability × Impact. A risk matrix helps classify features as High, Medium, or Low. It is very useful when time is limited and helps focus on critical 20% features that affect 80% users.

94

What is the difference between functional and non-functional testing?

Reference answer

Functional Testing checks if required features work right by running cases and scenarios to ensure functions operate as planned. Examples include seeing if a website's login works properly or confirming a word processor opens documents. Non-Functional Testing assesses other critical aspects like performance (speed under load), usability (intuitive navigation), security (stopping intruders), compatibility (running on various hardware/software), and reliability (bouncing back from errors). Both are vital: functional verifies intended behavior, non-functional ensures performance, security, and user satisfaction.

95

How do you balance speed and quality?

Reference answer

By prioritizing critical paths and accepting informed risk.

96

What is a bug bounty?

Reference answer

A bug bounty program lets an organization offer reward to a person who find errors in their software and report them. Bug bounty is a concept that has existed since the internet was created. Companies started to understand how expensive it is for them to hire experts in penetration testing every time they want to find vulnerabilities on their website or application. So recently, bug bounty programs become mainstream. The first company to catch on to this concept was Google . It launched its “Vulnerability Reward Program” in 2010 and has paid out over $4 million since then.

97

How would you test a broken toaster?

Reference answer

To test a broken toaster:Visual Inspection: Check for any visible damage or missing parts. Power Source: Ensure the toaster is plugged in and the outlet is functioning. Functionality Test: Attempt to toast bread and observe the toaster's behavior. Safety Checks: Verify that safety features like automatic shutoff are working. Component Testing: Test individual components such as the heating elements and timer mechanism. Documentation: Record all findings and steps taken during the testing process.

98

The client changes requirements frequently. How do you manage testing?

Reference answer

When client requirements change frequently, the following steps are necessary to manage testing: - Keep test cases modular so that they can be easily added to or deleted as per changing requirements. - Maintain a living traceability matrix to ensure all requirements are tested. - Use impact analysis. - Implement automation for repetitive regression testing to ensure that no functionality is broken. - Recommend agile practices, such as weekly refinement (sprint reviews) and retrospectives, to adapt to evolving requirements. - Collaborate closely with business analysts and stakeholders to understand the changing requirements.

99

How much testing do you need to do?

Reference answer

Exhaustive testing is impossible, as is proving the complete absence of errors. As a Tester, you should select the test cases that will be most likely to find errors rather than trying to find them all (as you won't be able to). Once you are happy with the software and are confident it will work as expected, you have done enough testing and can release the product.

100

Describe your experience with usability testing and user acceptance testing (UAT), and how these types of testing contribute to overall software quality.

Reference answer

Usability testing assesses user-friendliness, while UAT verifies that the software meets user requirements. Both are essential for ensuring end-user satisfaction.

101

How would you test a login page?

Reference answer

The first step would be to understand the expected behavior of the page. Once that's clear, from there, testing would begin with functional scenarios such as valid login, invalid credentials, empty fields, incorrect formats, and more. Afterwards, attention would shift to edge cases to test boundaries of the software functionality. Security is also a critical factor, so tests should involve SQL injection and brute force attacks.

102

Can you explain the importance of risk-based testing and how you would approach it?

Reference answer

Risk-based testing is a method of prioritizing tests based on the potential risks associated with a particular feature or functionality. The goal is to identify and focus testing efforts on the areas of the software that pose the greatest risk to the business, ensuring that the most critical issues are addressed first. In my approach to risk-based testing, I would first analyze the software requirements and identify potential risks, such as security vulnerabilities or performance bottlenecks. Then, I would prioritize the tests based on the level of risk and allocate more resources and time to the higher-risk areas. Thus, I will ensure that the most important issues are addressed first and that limited testing resources are used effectively.

103

What is a bug life cycle?

Reference answer

It describes the stages of a defect from reporting to closure.

104

What are the different levels of Testing?

Reference answer

- Unit Testing – Testing individual components. - Integration Testing – Testing interactions between modules. - System Testing – Testing the complete system. - User Acceptance Testing (UAT) – Testing the application in a real-world scenario.

105

As a QA tester, what do you think makes a "high-quality" website?

Reference answer

A high-quality website should satisfy three things: - Functional Reliability: A high-quality website simply works. Every element behaves as expected across devices, browsers, and user paths. This is the core of QA testing. - UX Consistency: A high-quality website feels intuitive. Users shouldn't have to guess what will happen when they click something. It's harder to measure UX, but a good tester should have a sense of what makes good and bad UX. Here are some examples of good B2B websites that you can use for inspiration. A lot of B2B SaaS websites follow UI/UX best practices, so that should be a good starting point. - Performance: A high-quality site doesn't just look good. It should be fast, and it holds up under pressure.

106

Explain the concept of API testing and how you would approach it.

Reference answer

API Testing refers to testing the Application Programming Interfaces (APIs) to ensure they function correctly, meet specified requirements, and return expected responses. APIs are the bridges between different systems, allowing them to communicate and share data. API testing primarily involves validating the functionality, performance, reliability, and security of an API. Approach to API Testing: - Understand the API Requirements: Before starting testing, it's important to understand the API documentation, which includes: - Endpoints: URL patterns for accessing the API. - Request types: Methods such as GET, POST, PUT, DELETE. - Request parameters: Data or parameters that need to be sent with the request. - Response structure: The expected response (status code, body, headers). - Test Authentication & Authorization: Ensure that APIs require proper authentication (e.g., API keys, OAuth tokens) and validate access control mechanisms to make sure unauthorized requests are blocked. - Test Endpoints: - Positive Testing: Send valid requests and verify correct responses (status codes, response bodies, and headers). - Negative Testing: Send invalid or malformed requests to check how the API handles errors and whether appropriate error codes and messages are returned. - Boundary Testing: Check for edge cases (e.g., empty parameters, long strings). - Performance Testing: Ensure the API handles a large number of requests within acceptable limits (using tools like JMeter or Postman). - Validate Data Integrity: Ensure that the API returns the correct data, especially when modifying data (e.g., POST, PUT requests). Check if the system's state is accurately reflected after API calls. - Security Testing: Test for common security vulnerabilities in APIs, such as SQL injection, cross-site scripting (XSS), and authorization flaws. - Integration Testing: Ensure the API integrates correctly with other systems or microservices it interacts with. Verify that data flows correctly between components. - Versioning: Ensure the API handles different versions correctly (i.e., backward compatibility). Test whether older versions continue to work when a new version is released. Popular tools for API testing include Postman, SoapUI, and RestAssured.

107

How would you test an application built on microservices architecture?

Reference answer

Functional Testing: - Validate APIs and their integrations using tools like Postman or REST Assured. - Performance Testing: - Use JMeter or Gatling to evaluate service latency and scalability. - Contract Testing: - Ensure APIs conform to defined standards and schemas. - End-to-End Testing: - Simulate user journeys across multiple microservices to validate overall functionality. - Monitoring and Debugging: - Utilize tools like Dynatrace or New Relic for real-time insights into service performance.

108

What is the difference between a test case and a test scenario?

Reference answer

A test case is a detailed set of steps that a tester will follow to validate the product, while a test scenario is a high-level description of the testing process.

109

What is end-to-end testing?

Reference answer

End-to-end testing involves testing the complete flow of an application from start to finish, including all integrated systems, to ensure that the software works as a whole.

110

What is the purpose of risk-based testing?

Reference answer

Risk-based testing involves accessing the risk based on the software complexity, frequency of use, and many other factors. It prioritizes testing of the functionality and features of the system which are more impactful and are likely to have defects. The purpose of risk-based testing is to - Identify risks to system quality. - Use the knowledge of risk to guide testing planning, specification, preparation, and execution. - It involves both mitigation and contingency. Mitigation here means to test the reduce the

111

How do you measure the effectiveness of your testing efforts?

Reference answer

Effectiveness of testing efforts can be measured using the following metrics:Defect Detection Percentage (DDP): The ratio of defects detected during testing to the total number of defects. Test Coverage: Percentage of requirements or code covered by test cases. Defect Leakage: Number of defects found in production divided by the total number of defects. Test Execution Rate: Number of test cases executed in a given time period. Defect Resolution Time: Average time taken to fix and verify defects. Customer Feedback: User satisfaction and feedback post-release.

112

How do you coach junior QA team members?

Reference answer

Through regular reviews, feedback, and hands-on guidance.

113

What should a senior level QA engineer demonstrate when answering technical questions?

Reference answer

When I interview a senior level engineer and I ask them a technical question, I expect a detailed response to the question. Many times, I get a high level response instead which, to me, signals that they don't have the experience I'm looking for. As an interviewee, I would try to add as much detail as possible when answering technical questions. When asked about automation, talk about the framework, share what methods you had to develop to work around issues with maintainability, discuss troubleshooting items you had to resolve, and so on. The more details, the better.

114

How do you prioritize which test cases to automate?

Reference answer

I'd focus on tests that run often, like regression or smoke tests, because automating saves time in the long run. Also, prioritize stable features that don't change much, complex ones that are error-prone manually, or high-risk areas like payments. I'd weigh the effort to automate against the benefits; if it's a one-off test, manual might be fine. Tools and team resources play a role too.

115

What is the importance of test automation in continuous delivery?

Reference answer

Test automation is essential for enabling Continuous Delivery (CD), which is the practice of automating the entire software release process so that code can be deployed to production quickly and reliably. Importance of Test Automation in Continuous Delivery: - Faster Feedback: Automated tests provide quick feedback to developers whenever code changes are made, ensuring that defects are identified and fixed early in the development process. This enables faster iterations and quicker releases. - Continuous Integration and Testing: Automation allows tests to be executed continuously as part of the Continuous Integration (CI) pipeline. Every time code is pushed, automated tests are run to verify that the new changes don't break existing functionality. - Regression Testing: Automated tests can easily be re-run as part of each deployment, ensuring that new changes haven't introduced regressions. This is critical for maintaining stability in rapidly changing codebases. - Reduced Human Error: Automated tests reduce the risk of human error in testing, which can occur when testing is performed manually, especially when complex scenarios are involved. - Scalability: Automated tests can be run on multiple platforms, configurations, and devices simultaneously, which would be time-prohibitive for manual testing. - Faster Releases: With automated tests, the testing phase is faster, enabling more frequent releases. This is crucial for continuous delivery, where the goal is to deploy small, incremental changes to production regularly. - Consistency: Automation ensures that tests are run the same way every time, leading to more consistent results. This is especially important in large teams where manual testing can lead to inconsistencies.

116

What is Root Cause Analysis (RCA) in Testing?

Reference answer

RCA identifies the underlying cause of defects to prevent recurrence. Common methods: - 5 Whys Technique - Fishbone Diagram

117

What is the difference between Outsourced Testing and Crowdsourced Testing?

Reference answer

Outsourced Testing vs Crowdsourced Testing | Outsource Testing | Crowdsourced testing | |---|---| | A dedicated team is present to handle your testing Needs we can say it's a third party which is unknown to you, test your application or product with a fresh set of mind. | A completely unknown pool of testing resources test your application, you can judge the quality of your product on the basis of number of bugs reported. | | Payment is done on the basis of hours spent in testing, this estimation is done prior to the testing cycle. As an example testing outsourcing costs around 20 to 40$ per hour. | Payment is done on the basis of bug reported, no of severe bugs and low priority bugs. For example severe bug cost is 15$ and low priority bug is 3$ whereas medium priority bugs are costing 5$. | | Application data is kept confidential and this is one of the code of ethics of every testing provider company. | Since there are n number of testers working on your application and they are not legally bound with Crowd source provider company, they are not bound to keep application data confidential. There are chances of data leakage if crowd source testing is done and no assurance of data privacy. | | Communication is quite easy, because there is one representative always present to handle to share testing status, quality of your product. | Communication is bit tricky, because you have to understand the product quality on the basis of bugs logged by testers, you have to understand the bug by talking to the tester individually. | | Quality is not compromised, since the objective is to identify all the bugs, within time and within budget. Entire team works to achieve this milestone, They present potential and valid bugs and organization is confident enough to fix only those bugs and get assured about their product quality. | Since there is no team concept, here focus is more on Quantity rather than quality. There are chances that your application is tested by 1000 of testers of different experiences. They may log 5K bugs of different severity. So its organization's responsibility to identify the real bugs and fix them. | | Testing platform and environment is completely owned by outsourced company, they are well settled with all useful software, tools, management tools, OS and Devices. | Testing environment is totally dependent on individual tester, some testers are on testing on MAC machine or some are testing on Windows, some are testing on Android or some are testing on Apple. | | Skilled testers are in the team, there are fixed no of testers in the team. Each tester is well skilled in a particular area like mobile testing, performance testing, automation testing, functional testing. | Huge no of testers, with different expertise and different years of experiences, so chances of quality bugs depends of expertise of testers. Which may be surprisingly good or bad too. | | One team, one time zone, restricted deadline, and planned budget, in this way testing cycles are complete. | No team concept, Different time zones, no deadlines but bugs are reported very fast. | | Bugs reported are generally predictive in nature because testers work within a scope of testing. They don't touch few areas because it may not in their budget. | Here no limitations of testing scope, N no of testers, n no of directions of breaking the system, Due to this testing cycle goes through a real scenario, for example n number of users are accessing application they might get some security flaw in the application. | | High paid in comparison to Crowd sourced testing but lesser than Inhouse Testing team. | Budget friendly, quick results some time real and unexpected issues are identified. |

118

What is a test automation framework?

Reference answer

A test automation framework is a set of guidelines for creating and structuring test cases to ensure efficiency and maintainability of test scripts.

119

What is STLC?

Reference answer

Software Testing Life Cycle is a structured process followed by testing teams to ensure systematic testing. The stages of STLC are requirement analysis, test planning, test case design, environment setup, test execution, and test closure. Each stage helps ensure that testing activities are organized and aligned with development progress.

120

What is the defect leakage ratio, and how is it calculated?

Reference answer

Software testers use the defect leakage ratio to check how successful their QA testing process is and to determine the number of problems testers don't notice during the QA testing process. The formula to determine the defect leakage ratio is: Defect leakage = number of defects that users report after release / total defects testers find x 100.

121

What role does documentation play in your testing process, and how do you ensure that test documentation remains accurate and up-to-date throughout a project?

Reference answer

Documentation is crucial for traceability and knowledge sharing. I regularly review and update test documentation to reflect changes in the software.

122

What is the difference between QA and Testing?

Reference answer

Quality Assurance refers to the overall process of ensuring the quality of a product, while testing refers to the specific activities of evaluating the product against its requirements. Testing is a part of QA but not the entire process.

123

Explain API Testing and show your approach to API Testing

Reference answer

API testing is the process of verifying that an API behaves as expected. It checks functionality, performance, security, and how the API handles various inputs and edge cases. Key considerations when designing API tests: - Read the API documentation to understand functionality and technical requirements - Consider the architectural style — REST, GraphQL, and SOAP require different testing approaches - Automate data-driven tests to validate flows against varied data types, formats, and scenarios - Manage endpoints by grouping them to avoid duplicates and ensure complete scenario coverage

124

What is shift-left testing?

Reference answer

It means starting testing earlier in development, like during requirements or coding, instead of waiting till the end. Helps catch bugs cheaply and fast, think unit tests by devs. Ties into CI/CD for continuous quality checks

125

Explain how does a test coverage tool work?

Reference answer

Code coverage testing is a process of running tests on software to ensure that the code plan covers all aspects of the software's source code. This type of testing runs parallel with actual product testing. The code coverage tool allows you to track which statements of your source code are being executed. At the end of testing, you will receive a report that details which statements were not covered and what percentage of your overall test coverage is.

126

What are the seven principles of Software Testing?

Reference answer

Testing has the purpose of showing the presence of defects, not the absence of defects. Exhaustive testing is not feasible, and will waste time and money with very little impact on product quality. Early testing is key to saving time and money, so should be conducted in the early stages of the Software Development Life Cycle (SDLC). Defects will cluster together, therefore, will be found in a small number of modules, which can help focus your testing efforts. The pesticide paradox refers to using the same tests on the same module until it is immune, showing that it is not useful to re-run tests repeatedly as this will not find new bugs. Testing is all about context and there is no one size fits all approach. Watch out for the absence-of-errors fallacy. No defects does not mean the software is successful, especially if it does not solve the end-user problems. Software must be bug-free almost all the time, but must meet user requirements at all times.

127

What is acceptance testing?

Reference answer

Acceptance testing is the process of verifying whether a software application meets the business requirements and whether it is ready for release to the end-users. It is typically performed by the QA team or end-users and helps confirm that the software delivers the functionality and features as promised by the stakeholders. There are two types of acceptance testing: - Alpha Testing: Conducted by the development team internally before the product is released to external users. Alpha testing aims to identify bugs or issues that could affect the final product. - Beta Testing: Performed by a select group of external users who test the product in a real-world environment. Beta testing helps gather feedback from users and identify any remaining issues before the final release. Acceptance testing ensures that the product is acceptable to stakeholders, meets user needs, and is ready for production deployment.

128

What do you mean by a test case? What are some good practices for writing test cases?

Reference answer

A test case is a collection of actions performed to ensure that a specific feature or operation of your software program is working properly. A Test Case is a set of test procedures, data, preconditions, and postconditions created for a specific test scenario in order to verify any requirement. The test case contains specified variables or conditions that a testing engineer might use to compare expected and actual outcomes in order to assess whether a software product meets the customer's needs. Following are some good practices for writing test cases : - Simple and transparent test cases are required: Make your test cases as simple as possible. They must be clear and straightforward because the test case author may not be able to perform them. Use declarative language such as "go to the main page," "input data," "click here," and so on. This makes it easier to understand the test stages and speeds up the testing process. - Create a test case that considers the end-user: Any software project's ultimate goal is to produce test cases that fulfil client requirements and are simple to use and run. A tester must write test cases from the standpoint of the end-user. - Repetition of test cases should be avoided: Test instances should not be repeated. If a test case is required for the execution of another test case, use the test case id in the preconditioned column to refer to it. - Make certain you have complete coverage: Make sure you write test cases to ensure you've covered all of the software requirements in the specification document. To verify that no functions or conditions are left untested, use the Traceability Matrix. - Don't Make Assumptions: When creating a test case, don't make assumptions about the functioning and features of your software application. Follow the specifications in the specification documents. - Self-cleaning: The test case you write must restore the Test Environment to its previous condition and should not render it unusable. This is particularly true when it comes to configuration testing.

129

How do you handle flaky automation tests?

Reference answer

Fix waits and locators, stabilize test data, and validate environments.

130

Can you explain the concept of test-driven development (TDD) and how it impacts the development process and software quality?

Reference answer

TDD involves writing tests before code. It promotes code quality, better design, and early issue detection.

131

What are test metrics, and why are they important?

Reference answer

Test metrics are quantitative measures used to assess the effectiveness, efficiency, and progress of the software testing process. These metrics help in tracking the performance of testing efforts and provide insights into the quality of the product and the testing process. They are crucial for identifying areas of improvement, managing resources, and making informed decisions regarding the testing process. Common Types of Test Metrics: - Test Coverage: Measures the percentage of code or requirements that are covered by test cases. It helps in understanding how much of the software has been tested and whether there are untested areas. - Defect Density: Indicates the number of defects identified in a specific area of the code or software relative to its size (e.g., defects per 1000 lines of code). This helps in identifying problematic areas in the application. - Test Execution Progress: Tracks the progress of test case execution during the testing phase, such as the percentage of tests passed, failed, or blocked. - Defect Discovery Rate: Tracks how many defects are found over a certain period, which helps in understanding the stability of the software as testing progresses. - Test Case Effectiveness: Measures the number of defects found per test case, indicating how well test cases are identifying actual issues in the software. - Defect Resolution Time: The average time taken to resolve defects from the time they are reported to when they are fixed. This helps in evaluating the efficiency of the development team in addressing issues. Importance of Test Metrics: - Quality Control: Metrics provide a clear picture of product quality, helping stakeholders assess whether the software is ready for release. - Decision-Making: Metrics help in making data-driven decisions on the testing approach, resource allocation, and test prioritization. - Process Improvement: Tracking metrics over time allows teams to identify bottlenecks or inefficiencies in the testing process and adopt improvements. - Risk Management: Metrics like defect density and discovery rates help in identifying high-risk areas of the software, enabling targeted testing.

132

What is 'validation' in the context of software testing?

Reference answer

'Validation' takes place after verification and involves checking whether the software system meets the stakeholders' expectations and needs. The process involves black- and white-box testing, non-functional testing, and code execution to check if the software product is reliable and usable. Validation involves discovering issues that testers couldn't catch during the software verification stage.

133

What is Boundary Value Analysis?

Reference answer

Boundary value analysis (BVA) is based on testing the boundary values of valid and invalid partitions. The Behavior at the edge of each equivalence partition is more likely to be incorrect than the behavior within the partition, so boundaries are an area where testing is likely to yield defects. Every partition has its maximum and minimum values and these maximum and minimum values are the boundary values of a partition. A boundary value for a valid partition is a valid boundary value. Similarly, a boundary value for an invalid partition is an invalid boundary value.

134

State the difference between bugs and errors

Reference answer

Bugs and errors differ in the following ways: | Bugs | Errors | |---|---| | Software bugs are defects, which occur when the software or an application does not work as intended. A bug occurs when there is a coding error, which causes the program to malfunction. | Errors in code are caused by problems with the code, which means that the developer could have misunderstood the requirement or the requirement was not defined correctly, leading to a mistake. | | The bug is submitted by the testers. | Errors are raised by test engineers and developers. | | Logic bugs, resource bugs, and algorithmic bugs are types of bugs. | Syntactic error, error handling error, error handling error, user interface error, flow control error, calculation error, and testing error are types of errors. | | The software is detected before it is deployed in production. | The error occurs when the code is unable to be compiled. |

135

Can you walk me through the QA testing life cycle?

Reference answer

Review everything you've learned about testing and reflect on your experiences. Be prepared to discuss the testing life cycle and why each phase is important.

136

What is integration testing?

Reference answer

Integration testing is the process of testing the interaction between two or more integrated components or systems to ensure that they work together as expected. The goal is to detect any issues that arise when different modules or subsystems interact, such as data discrepancies, communication failures, or incorrect data flow. Key points about integration testing: - Focus on interfaces: Integration testing focuses on validating the interfaces and interactions between components or modules, ensuring they work correctly when integrated. - Top-Down and Bottom-Up Approaches: There are different approaches to integration testing: - Top-Down: Testing begins from the top-level module and proceeds downward, simulating lower-level components through stubs. - Bottom-Up: Testing starts from the lower-level modules and proceeds upward, using drivers to simulate higher-level modules. - Types of integration testing: - Big Bang Integration: All components are integrated at once, and testing is performed after integration. - Incremental Integration: Modules are integrated and tested incrementally, one at a time, ensuring a smoother testing process. Integration testing ensures that the various parts of the software work together seamlessly and is typically done after unit testing and before system testing.

137

What are some common QA tools?

Reference answer

Some QA tools are as simple as a requirement traceability matrix. These requirement documents assure that a system's defined requirements get linked and tested throughout the verification process. Other examples would include test management software or programs that facilitate QA testing such as automated testing tools.

138

Why is critical thinking an essential skill for a QA software tester?

Reference answer

Critical thinking helps applicants evaluate information, identify risks, and make decisions based on the data they gather. In the test design process, testers must use critical thinking to create effective test cases and guarantee comprehensive testing processes. They must also use critical-thinking abilities to complete defect analysis and examine logs to find the root causes of errors.

139

What is walk-through meeting?

Reference answer

Once the Business Analysts complete the requirement document, they call a meeting to explain how the functionalities work, what the process is in the designed application and other details. The Business Analysts explain the high level functionalities of the application (software) that is going to the built. The participant members in the meeting may provide feedback and various point of views are expressed. This is walk-through meeting.

140

What is a Critical Bug?

Reference answer

A critical bug is a show stopper which means a large piece of functionality or major system component is completely broken and there is no workaround to move further. For example, Due to a bug in one module, we cannot test the other modules because that blocker bug has blocked other modules. Bugs which affects the customers business are considered as critical. Example: 1. “Sign In” button is not working on Gmail App and Gmail users are blocked to login to their accounts. 2. An error message pops up when a customer clicks on transfer money button in a Banking website.

141

What is a Test Case?

Reference answer

A test case is a documented set of conditions, inputs, actions, and expected results used to verify a specific functionality of an application. It helps ensure that testing is repeatable and that different testers can consistently validate the same functionality.

142

What is 'load testing' and why is it important?

Reference answer

Load testing is a type of performance testing conducted to evaluate the system's behavior under a specific expected load. It helps identify the maximum operating capacity of an application and any bottlenecks that can interrupt its smooth functioning. It's crucial in ensuring that an application can withstand a high user load.

143

What can you tell me about software development lifecyles (SDLC) you've experienced in the past? What do you think works and what doesn't?

Reference answer

Here, I'm looking to see if the candidate has experience with the basic concepts of Agile, and if they've worked in a scrum environment before. It's okay if they haven't, but it's usually an advantage if they have.

144

What is exploratory testing, and how does it relate to manual testing?

Reference answer

It's unscripted testing where you explore the app based on intuition to find hidden bugs. It's perfect for manual because it needs human creativity. Unlike scripted tests, it's flexible for edge cases you didn't plan for, like odd user flows. Great for interns to learn the product deeply.

145

You are tasked with testing the login functionality of a web application. What are the critical test scenarios you would cover?

Reference answer

To test the login functionality comprehensively, I would consider the following scenarios: - Positive Test Scenarios: - Login with valid username and password. - Login after password recovery. - Login with different browsers and devices. - Negative Test Scenarios: - Attempt login with an incorrect password. - Use an invalid email format in the username field. - Try logging in without filling in any fields. - Boundary and Edge Cases: - Test password field with minimum and maximum allowable characters. - Test login with special characters in the username or password. - Security Scenarios: - Check for SQL injection vulnerabilities. - Verify that passwords are encrypted during submission. - Test multi-factor authentication if implemented.

146

what's a technical book that helped you in your career?

Reference answer

Answers vary, but examples include 'Clean Code' by Robert C. Martin or 'The Art of Software Testing' by Glenford Myers.

147

What is Business Requirement Document (BRD)?

Reference answer

It is a document that describes the details of the application functionalities which is required by the user. This document is written by the Business Analysts.

148

Only 2 hours to test before release – what's your approach?

Reference answer

First, I review release notes and identify changed modules. Then I run a smoke test covering login, core feature, and checkout/payment. I focus on impacted areas and tightly connected modules for regression. I document what was tested and what was not tested due to time. Finally, I communicate risk clearly and support go/no-go decision based on business impact.

149

Developer says “it works on my machine.” What do you do?

Reference answer

I treat it as an environment issue, not an argument. I compare OS version, browser, database state, config files, and environment variables. I reproduce in a clean QA or staging environment and capture logs or HAR files as evidence. I also check for data-dependent issues and permission differences. Using Docker or shared environments helps avoid these issues in the future.

150

What is configuration management?

Reference answer

Configuration management (CM) is a process of systems engineering to maintain system resources, computer systems, servers, software, and product's performance in a consistent state. It helps to record all the changes made in the system and ensures that the system performs as expected even though changes are made over time.

151

How do you approach test planning in a large-scale project?

Reference answer

Test planning in a large-scale project is a critical activity that involves comprehensive preparation and strategy to ensure quality throughout the software development life cycle (SDLC). The following steps outline how to approach test planning: - Understand Project Scope and Requirements: Begin by thoroughly understanding the project requirements, business goals, and user needs. This helps in aligning the testing efforts with project objectives and ensuring comprehensive test coverage. Close collaboration with stakeholders (product owners, business analysts, developers) is crucial. - Define Test Objectives: Set clear objectives for the testing effort. This includes identifying the key areas to be tested, determining the type of testing required (functional, performance, security, etc.), and establishing quality targets (e.g., defect-free code, response times, etc.). - Resource Planning: Ensure that the testing team has the necessary resources, including skilled testers, test environments, test data, and tools. In large-scale projects, you may need specialized testers (e.g., performance testers, security testers), as well as proper infrastructure to support parallel testing. - Risk Analysis and Prioritization: Conduct a risk analysis to identify high-risk areas that require more focused testing. Based on this, prioritize testing efforts to mitigate risks. High-priority areas often include critical business functionalities, integrations, or third-party services. - Test Strategy: Develop a high-level test strategy that outlines the approach for different types of testing (e.g., functional, non-functional, regression). The strategy should also define the test levels (unit, integration, system, acceptance) and methodologies (manual vs. automation). - Test Schedule and Milestones: Break down testing into phases, such as unit testing, system testing, integration testing, and user acceptance testing (UAT). Define milestones and timelines, ensuring that testing aligns with the development cycle, with proper buffers for fixing defects and retesting. - Test Environment and Data: Define the test environments, including hardware, software, network configurations, and tools. Test data should be carefully managed, especially for large-scale projects with complex data dependencies. - Test Metrics and Reporting: Define the metrics to track test progress (e.g., test coverage, defect density, pass/fail rates) and reporting formats to keep stakeholders informed. Frequent reporting of test results will help in making timely decisions and adjustments to the testing approach. - Test Closure Criteria: Define clear criteria for test closure, such as a specific number of tests passed, the resolution of high-severity defects, or meeting other quality targets. By following a structured approach to test planning, the testing efforts in large-scale projects can be effectively managed to ensure quality and timely delivery.

152

What is Load Testing?

Reference answer

It is to verify that the system/application can handle the expected number of transactions and to verify the system/application behavior under both normal and peak load conditions.

153

What is the difference between black box and white box testing?

Reference answer

Black box testing is like treating the software as a mystery box; you just check if it does what it's supposed to from the outside, without peeking at the code. For instance, you'd input data and see if the output matches expectations, focusing on user experience. White box testing, on the other hand, looks inside the code to test logic, paths, and structures, like ensuring an algorithm handles all possible conditions. Black box is great for functionality, while white box catches internal flaws — teams often use both for full coverage.

154

How do you handle a situation where you find a critical bug just before a release?

Reference answer

First, I'd confirm it's reproducible and document everything clearly. Then, escalate to the team lead or devs right away, explaining the impact (e.g., it could crash the app for users). We'd decide if we fix it quickly and retest, or delay the release. Communication is key to keeping stakeholders updated. The goal is quality over rushing, so I'd help with any urgent testing after the fix.

155

What is Alpha and Beta testing?

Reference answer

Alpha testing belongs to the user acceptance testing phase, where the objective is to find bugs before releasing the product to customers. Whereas, Beta testing is the user acceptance testing that takes place after Alpha when users are interacting with the software in a real environment. Beta testing is essential for getting feedback from real users using the software.

156

How would you test a login page?

Reference answer

I'd cover basics like successful logins with valid credentials. Then the next negatives like wrong passwords, empty fields, or locked accounts. Check security stuff like password hiding, reset links, and protection against hacks. Test on different browsers/devices, performance under load, and usability (e.g., does ‘Enter' key work?). Also, integrate with other features, like staying logged in across sessions.

157

Re-testing vs Regression testing?

Reference answer

Re-testing means testing a specific defect again to confirm it is fixed. It focuses only on the failed test case. Regression testing checks that new changes have not broken existing functionality. Re-testing happens after a bug fix, while regression happens after any code change before release. Regression uses a broader test suite selected using risk-based or impact analysis strategy.

158

What is data driven testing?

Reference answer

Data driven testing uses input values by comparing them to data stored directly in data files, including excel sheets or CSV files. Expect your interviewee to understand the process in detail and mention the benefits of automating data driven tests for the best results.

159

How can Selenium WebDriver be used to detect broken links?

Reference answer

You might be asked this tricky question by the interviewer. As an example, he could give you a web page with 20 links, and you would have to determine which of those 20 links are working and which aren't or are broken. Considering that you must verify the functionality of each link, the workaround is to send HTTP requests to each link and analyze the response. When you navigate to a URL using the driver.get() method, you will receive a 200 - OK status response. It is evident that the link has been obtained and is working. In the case of any other status, the link is broken. Let's now understand how to do that. As a first step, we must determine the different hyperlinks on the webpage using anchor tags. We can obtain hyperlinks for each tag using the attribute 'href' value and analyze the response received using the driver.get() method.

160

Name some popular configuration management tools?

Reference answer

Some of the popular configuration management tools are Ansible, Chef, Puppet, Terraform, Saltstack, etc.

161

What is Scalability Testing?

Reference answer

Scalability testing is a type of non-functional testing. It is to determine how the application under test scales with increasing workload.

162

What is Object Repository?

Reference answer

Object Repository is a collection of web elements and their locators that belong to the Application Under Test (AUT). The QAs maintain all element locators in a separate file known as the property file (. properties) in Selenium. During execution, it serves as a means of identifying objects between the test script and the application.

163

What is the difference between a test case and a test scenario?

Reference answer

- Test Case: A test case is a detailed document that outlines specific steps to test a particular functionality or feature of the application. It includes the input values, execution steps, expected results, and any relevant preconditions or postconditions. The goal of a test case is to verify that a specific behavior of the application meets the expected output based on given inputs. - Example: "Verify that the login page accepts valid username and password and allows the user to log in." - Test Scenario: A test scenario is a high-level description of what needs to be tested, often in the form of a feature, function, or user interaction. A test scenario defines the general area or aspect to be tested without getting into the specifics of the steps. It provides a broader view of the functionality being tested. - Example: "Test the login functionality for the application." The primary difference between the two is the level of detail. A test case is more detailed, outlining specific actions and results, while a test scenario is broader and may contain multiple test cases under it.

164

What is unit testing in software testing?

Reference answer

Unit testing involves testing individual components or units of the software to ensure they function correctly. In my experience, developers usually perform this type of testing.

165

What is a test case?

Reference answer

A document that defines steps, data, and expected results.

166

What is a bug in software testing?

Reference answer

A malfunction in the software/system is an error that may cause components or the system to fail to perform its required functions. In other words, an error encountered during the test can cause malfunction. For example, incorrect data description, statements, input data, design, etc. Example: The clicking function is not working as expected its a bug. Read more - Bug in Software Testing.

167

Explain end-to-end testing in your own words. Compare End to End Testing vs Integration Testing.

Reference answer

End-to-end testing validates the entire software application from start to finish, simulating real user scenarios to ensure all components and systems work together seamlessly.It covers the complete flow of the application, including interactions with databases, networks, and external services. Integration testing, on the other hand, focuses on verifying the interactions between individual modules or services within the application. While integration testing checks for correct module-to-module interactions, end-to-end testing ensures the entire system functions correctly from the user's perspective. End-to-end testing provides a higher level of confidence in the overall system, while integration testing helps identify issues at the module level.

168

What is State Transition?

Reference answer

Using state transition testing, we pick test cases from an application where we need to test different system transitions. We can apply this when an application gives a different output for the same input, depending on what has happened in the earlier state.

169

Have you ever had a conflict with your colleague/manager?

Reference answer

Answers vary, but should show conflict resolution skills, professionalism, and ability to collaborate.

170

How would you test our product without any documentation or requirements?

Reference answer

The candidate should describe a exploratory testing approach, starting with understanding the product's purpose through interaction, identifying key features, creating test scenarios based on common use cases, and documenting findings as they test.

171

What would you test first in a new feature?

Reference answer

Start with the main user flow and critical functionality.

172

Can you explain the various levels of software testing?

Reference answer

1. Unit Testing: Code chunks get tested alone. Functions and small parts are evaluated individually to see if they behave as planned. 2. Integration Testing: Checks how parts talk to each other when put together. 3. System Testing: Examines the whole system working end-to-end to verify if the integrated product functions right and meets business needs. 4. Acceptance Testing: Checks if the software works right in a real setting with actual data, performed by the client or users. Other tests include Regression testing, Performance testing, and Security testing.

173

A new AI feature behaves inconsistently. How do you test it?

Reference answer

Determine the exact scenario where the new AI feature exhibits inconsistency. For this purpose: - Define deterministic vs non-deterministic scenarios for the new feature. - Validate training data inputs. - Test edge or boundary cases extensively. - Validate model output ranges. - Use A/B testing and statistical testing. - Log output variation for patterns.

174

What is the Difference Between Data-Driven Testing and Re-testing?

Reference answer

| Data-driven testing | Retesting | |---|---| | It is an automated testing procedure. | It is a manual testing procedure. | | In this, the application is tested with multiple test data. | In this, the application is tested with an entirely new set of data. | | Most of the time this testing is part of regression testing. | Most of the time this testing is independent of regression testing. | | It is a very easy procedure than retesting. | It is a very tedious and boring procedure as the tester needs to give input manually. |

175

How would you design a test strategy for a new e-commerce product?

Reference answer

I'd start by understanding the MVP—which features are critical for launch? For an e-commerce product, the core flows are product browsing, adding to cart, and checkout. I'd design tests around those first. For functional testing, I'd do manual testing of the happy path and edge cases, plus automation for regression. I'd do performance testing on checkout to make sure it handles peak load. I'd test payment processing thoroughly because that's high-risk. For security, I'd test for common vulnerabilities like SQL injection and XSS. I'd plan to test on multiple browsers and devices because users access e-commerce from everywhere. I'd define clear entry criteria (code is ready, dependencies are built) and exit criteria (no critical bugs, X% coverage of features). I'd also build in time for exploratory testing from a user perspective. The timeline would depend on the team size, but typically I'd allocate more time to checkout and payment than to category browsing.

176

What is Software testing?

Reference answer

Software testing involves evaluating and verifying a software product's functionality. Basically, it checks whether the software product matches anticipated requirements and makes sure it is defect-free. It can be said that testing enhances the quality of the product by preventing bugs, reducing development costs, and reducing performance issues.

177

What is Fuzz Testing?

Reference answer

Fuzz Testing is a Software Testing technique that uses invalid, unexpected, or random data as input and then checks for exceptions such as crashes and potential memory leaks. It is an automated testing technique that is performed to describe the system testing processes involving randomized or distributed approaches. Objectives: - To check the vulnerability of the system or software application. - To detect security faults and defects. - To determine the defects in effective cost. Read More - Fuzz Testing.

178

Discuss your experience with mobile testing, including testing on various mobile devices and platforms, and any challenges you've encountered.

Reference answer

I've tested mobile apps on different devices and platforms to ensure compatibility and responsiveness, addressing issues like fragmentation and varying screen sizes.

179

What Makes a Good Test Case?

Reference answer

A good test case should be clear, concise, and easy to execute with well-defined inputs and steps that anyone on the team can follow. Effective test cases also cover both positive scenarios and edge cases to ensure the system behaves correctly in varying conditions.

180

Can you provide an example of a particularly challenging defect you have identified and resolved in your previous projects?

Reference answer

In a previous project, I encountered a challenging defect in an e-commerce application where users experienced intermittent failures during the checkout process. The defect was difficult to reproduce consistently, making it challenging to diagnose.I utilized log analysis, session tracking, and automated scripts to simulate various user scenarios. Through thorough investigation, I identified that the issue was due to a race condition in the payment gateway integration. Once pinpointed, the development team implemented a fix to synchronize the payment process, ensuring stable and reliable checkouts. This resolution significantly improved the user experience and reduced cart abandonment rates.

181

How do you approach security testing and identify vulnerabilities in software?

Reference answer

Security testing involves using tools and techniques to identify vulnerabilities such as SQL injection, cross-site scripting (XSS), and security misconfigurations.

182

How would you test search functionality?

Reference answer

I'd test exact match, partial match, empty search, special characters, and case insensitivity. Then verify relevance like exact matches appearing first and correct sorting. I'd test filters combined with search and check pagination accuracy. Performance testing includes response time under large datasets and concurrent searches. I'd also test backend API search separately from UI search to validate response schema and data correctness.

183

What is Recovery Testing?

Reference answer

Recovery testing is performed in order to determine how quickly the system can recover after the system crash or hardware failure. It comes under the type of non-functional testing.

184

What is a Test Plan? What does it include?

Reference answer

A test plan is basically a dynamic document monitored and controlled by the testing manager. The success of a testing project totally depends upon a well-written test plan document that describes software testing scope and activities. It basically serves as a blueprint that outlines the what, when, how, and more of the entire test process. A test plan must include the following details: - Test Strategy - Test Objective - Test Scope - Reason for Testing - Exit/Suspension Criteria - Resource Planning - Test Deliverables.

185

Can you discuss your experience with test management tools and test case management systems, and how these tools have improved your testing processes?

Reference answer

I've used tools like TestRail and Zephyr to efficiently manage test cases, track progress, and generate detailed test reports, streamlining testing efforts.

186

What are the principles of Software Testing?

Reference answer

- Testing shows presence of defects: Although testing can discover software defects, it cannot ensure that the product is free of errors. Testing may reduce the quantity of glitches, but it will never be able to eliminate them all. - Exhaustive testing is impossible: Since it's impossible to test the software exhaustively, we can only run a few select tests and we assume that the software will always produce correct output. More comprehensive testing would be too costly and time-consuming. - Early testing: It's crucial to test software early on to find defects. In the early stages of SDLC, it's easier and less expensive to identify defects. Software testing should begin in the first phase of software development, during requirement analysis. - Defect clustering: According to the Pareto Principle, 80% of software defects arise from 20% of modules. In other words, most project defects are found in only a few sections of code. - Pesticide Paradox: If you want to find any new bugs, you can't just keep running the same test cases repeatedly. You need to add or update your existing test cases. - Testing is context depending: Depending on the software development context, the testing approach will differ. Based upon its type, different software requires variations in testing. - Absence of error fallacy: Not only does the software need to be bug-free 99% of the time, but it must meet customer requirements if it is ever going to be used.

187

What are some of the top qualities of a good Software Tester?

Reference answer

A good Software Tester will need to have an analytical mindset to identify the different types of tests needed to validate software functionalities and the curiosity to approach it from different angles, to see what could break it. They should be able to scrutinise software with the greatest attention to detail, to identify defects even in the most seemingly high-quality software.

188

What is error guessing?

Reference answer

Error guessing is based on tester experience and intuition to find defects. It is not based on formal documents but on past defect patterns and common mistakes. Examples include testing null values, large inputs, special characters, and boundary dates. Unlike BVA or equivalence partitioning, it is not structured but experience-based. It works best when combined with structured testing techniques.

189

How do you stay current with QA trends and technologies?

Reference answer

I follow a few industry blogs like Ministry of Testing and Test Automation University, and I'm part of a Slack community for QA engineers in my city. Every month or so, I'll find an article or tool that looks interesting and take time to explore it. Recently, I learned about API testing using Postman because so much of our backend testing needed to move beyond the UI. I ran through a tutorial, built a few test collections, and brought it to my team. We now use Postman for API regression testing, which is way faster than UI automation for those scenarios. I also attend local QA meetups when I can—even if I don't learn something groundbreaking, the conversation with other testers keeps me sharp and reminds me of what's possible.

190

What is the Difference Between Functional and Non-functional testing?

Reference answer

| Functional Testing | Non-Functional Testing | |---|---| | In functional testing, the behavior of the application is validated. | In non-functional testing, the performance of the application is validated. | | It is based on customers' requirements. | It is based on customers' expectations. | | It describes what the product does. | It describes how the product works. | | Functional testing is performed before non-functional testing. | Non-functional testing is performed after functional testing. | | It is more convenient to conduct functional testing by manual testing. | It is very hard to perform non-functional testing manually. | Some types of functional testing are: | Some types of Non-functional testing are: | Read More -Functional and Non-functional testing.

191

What is Automation Testing?

Reference answer

Automation Testing is the process of executing test cases using automation tools to reduce manual effort, improve accuracy, and speed up testing.

192

Tell me about a time you had to test something ambiguous or poorly documented.

Reference answer

Our product manager handed me a wireframe for a new filter feature but didn't specify how it should behave with certain edge cases—like what happens if a user selects two conflicting filters, or if they apply a filter and the results are empty. Rather than just testing the happy path, I scheduled a quick call with the PM and the developer to clarify. Turns out, the PM hadn't thought through those scenarios yet. We discussed what made sense from a user perspective, and the developer offered some technical constraints. That 15-minute conversation saved us from shipping confusing behavior. Then I wrote test cases based on what we'd agreed on. The lesson I took away: ambiguity isn't something to complain about—it's an opportunity to clarify and influence the product. I now proactively flag ambiguous requirements early rather than discovering surprises during testing.

193

What are the most important qualities for a manual QA tester to have?

Reference answer

A QA tester should have attention to detail, strong problem-solving skills, good communication and collaboration skills, a strong understanding of software development processes and the ability to adapt to changing requirements and technologies.

194

What is risk-based testing?

Reference answer

Risk-based testing involves prioritizing testing efforts based on the risk of failure in certain areas of the software. It focuses on testing the most critical areas where defects could have a significant impact on the user or business.

195

How do you ensure that test cases are comprehensive and cover all possible scenarios?

Reference answer

To ensure comprehensive test coverage:Requirement Analysis: Thoroughly analyze requirements to identify all possible scenarios. Test Design Techniques: Use techniques like equivalence partitioning, boundary value analysis, and decision table testing. Traceability Matrix: Create a traceability matrix to ensure all requirements are covered by test cases. Peer Reviews: Conduct reviews with team members to validate test cases. Exploratory Testing: Perform exploratory testing to discover additional test scenarios that may not be documented.

196

How do you ensure critical bugs are not missed?

Reference answer

By prioritizing high-risk areas and validating edge cases.

197

What is an exit criteria?

Reference answer

The conditions that must be met before testing should be concluded.

198

What is meant by Agile testing?

Reference answer

Agile is one of the more recent terms used in the dev world. Agile testing refers to testing that uses Agile methodologies. One of the primary differences is that you don't wait for your development team to finish coding. Instead, coding and testing happen at the same time, which involves testers interacting with several different members of the team and customers.

199

Can you discuss the challenges of testing mobile apps and strategies for mobile app testing?

Reference answer

Challenges include diverse devices, screen sizes, and operating systems. Strategies involve testing on real devices, using emulators, and considering factors like offline functionality.

200

How would you test a soda machine?

Reference answer

Naturally, you want to see how your interviewee engages with technical problems, including those that are new to her. Ask your candidate to test something arbitrary, such as a soda machine or a mobile phone app with which you're both familiar. Soda machines are interesting test cases, because the sum is made up of multiple parts: an alphanumeric keypad, a refrigerator, a dollar bill validator, a soda dispensary, an advertising display, etc. Also, a repairperson approaches the machine differently than does a customer who wants a pause that refreshes. QA testers who think well on their feet will consider these different functions and user needs. And it tells you, the interviewer, how the job candidate approaches the issues, from security testing to user interfaces. Even if in the back of her mind, all she's thinking about is how much she needs a soda.

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Common Interview Questions for Software QA Testers | SPOTO

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