100+ QA Lead Interview Questions and Answers

Questions related to Bid bond, Advance payment, Performance guarantee, SWIFT messages, and LC vs Guarantee.

• Bid bond guarantee is a type of guarantee that ensures the bidder will accept the contract if awarded.

• Advance payment guarantee is a type of guarantee that ensures the supplier will return the advance payment if they fail to deliver the goods or services.

• Performance guarantee is a type of guarantee that ensures the supplier will perform the contract as per the terms and ...read more

Interface in OOPS is used to achieve abstraction and multiple inheritance. It allows for run time polymorphism by implementing methods in different classes.

• Interface in OOPS is a blueprint of a class that includes abstract methods without any implementation.

• Interfaces are used to achieve abstraction, multiple inheritance, and loose coupling in code.

• To implement run time polymorphism using interfaces, create multiple classes that implement the same interface and override its m...read more

I use both Saucelab and Browserstack for different purposes. Saucelab for automated testing and Browserstack for manual testing.

• I use Saucelab for automated testing as it provides a cloud-based platform for running tests on multiple browsers and devices.

• I use Browserstack for manual testing as it allows me to interact with the application in real-time on various browsers and devices.

• Saucelab is great for continuous integration and regression testing, while Browserstack is use...read more

I follow a structured approach by prioritizing tasks, setting clear goals, collaborating with team members, and regularly tracking progress.

• Prioritize testing tasks based on criticality and impact on the sprint goals

• Set clear goals and expectations for each testing task

• Collaborate with team members to ensure alignment and support in completing tasks

• Regularly track progress and adjust priorities as needed to meet sprint deadlines

findElement is used to find a single element on a web page, while findElements is used to find multiple elements.

• findElement returns a single WebElement, while findElements returns a list of WebElements.

• findElement will throw NoSuchElementException if the element is not found, while findElements will return an empty list if no elements are found.

• Example: WebElement element = driver.findElement(By.id("exampleId")); List elements = driver.findElements(By.className("exampleClass...read more

Return the indices of elements in the array that add up to the target number.

• Iterate through the array and check if the sum of any two elements equals the target number.

• If a pair is found, store the indices of the elements in a separate array.

• Return the array of indices.

Possible reasons for webpage not working on Google Chrome

• Outdated browser version

• Issues with browser extensions

• JavaScript errors

• Network connectivity problems

• Incompatible website code

• Cache or cookies causing conflicts

Test case design techniques include boundary value analysis, equivalence partitioning, decision tables, state transition testing, and exploratory testing.

• Boundary Value Analysis: Testing at the boundaries of input ranges to ensure system stability (e.g. testing a login form with minimum and maximum character limits).

• Equivalence Partitioning: Dividing input data into classes to reduce the number of test cases needed (e.g. testing a calculator with positive and negative numbers...read more

QA leads prepare various test documents and a test automation roadmap to ensure quality assurance processes are effective and efficient.

• Test Strategy Document: Outlines the overall testing approach, including objectives, resources, and timelines. Example: A strategy for regression testing.

• Test Plan: Details the scope, approach, resources, and schedule of intended testing activities. Example: A plan for testing a new feature release.

• Test Case Specifications: Defines individual...read more

I would check for browser compatibility issues, clear cache and cookies, and update browser settings.

• Check for browser compatibility issues with the website

• Clear cache and cookies in the browser

• Update browser settings or try using a different browser

• Check for any browser extensions or plugins causing the issue

Print the second largest number in an unsorted array without using any inbuilt functions.

• Iterate through the array and keep track of the largest and second largest numbers.

• Compare each element with the largest and second largest numbers and update accordingly.

I want to join Dentsu because of its reputation in the industry and the opportunity to work on challenging projects. Learning Python takes time and dedication.

• I am attracted to Dentsu's strong reputation in the industry for innovation and creativity.

• I believe that joining Dentsu will provide me with the opportunity to work on challenging and exciting projects.

• Learning Python, or any programming language, requires time and dedication to fully grasp and apply effectively.

I have experience in creating automated test scripts using Selenium WebDriver and integrating them with Jenkins for continuous integration.

• Used Selenium WebDriver to automate web application testing

• Integrated automated tests with Jenkins for continuous integration

• Utilized TestNG framework for test execution and reporting

Understanding a URL in API testing involves analyzing its structure, parameters, and expected responses.

• Identify the HTTP method (GET, POST, PUT, DELETE) used in the API call.

• Examine the endpoint to understand the resource being accessed, e.g., '/users' for user data.

• Check query parameters for filtering or sorting, e.g., '?sort=asc' or '?id=123'.

• Review the expected response format (JSON, XML) and status codes (200, 404, 500).

• Consider authentication requirements, such as API k...read more

Types of waits in Selenium include Implicit Wait, Explicit Wait, and Fluent Wait.

• Implicit Wait: Waits for a certain amount of time before throwing a NoSuchElementException.

• Explicit Wait: Waits for a certain condition to be met before proceeding further in the code.

• Fluent Wait: Waits for a condition to be met with a defined polling frequency.

• Example: driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);

To check static UI appearance, I would perform visual testing using tools like Applitools or Selenium.

• Use visual testing tools to compare screenshots of the UI before and after changes

• Check for consistency in font, color, layout, and alignment

• Ensure that all UI elements are visible and not overlapping

• Verify that the UI is responsive and looks good on different screen sizes

• Perform manual checks to ensure that the UI meets design specifications

Automation can enhance test coverage by executing tests more frequently and consistently.

• Automation can run tests on multiple configurations and environments, increasing coverage.

• Automated tests can be easily repeated, ensuring all functionalities are tested thoroughly.

• Automation can cover edge cases and boundary conditions that may be missed in manual testing.

• Automated tests can be integrated into the CI/CD pipeline for continuous testing.

• Automation can help in testing compl...read more

Testing standards are guidelines and best practices for testing processes. Test planning involves defining objectives, scope, resources, and timelines for testing.

• Adhering to industry standards such as IEEE 829 or ISTQB guidelines

• Defining test objectives, scope, resources, and timelines

• Creating test plans that outline test strategies, test cases, and test data

• Incorporating risk-based testing approach to prioritize testing efforts

• Ensuring traceability between requirements, tes...read more

Reverse the words in a string without using built-in functions.

• Split the string into an array of words using a space as the delimiter.

• Create a new array and iterate over the words array in reverse order, adding each word to the new array.

• Join the new array of words back into a single string with spaces between each word.

Yes, I have experience in Mobile app testing, UI Testing, Jmeter, and API testing.

• I have experience in testing mobile applications on both iOS and Android platforms.

• I have conducted UI testing to ensure the user interface is intuitive and user-friendly.

• I have used Jmeter for performance testing to analyze the application's response time under different load conditions.

• I have tested APIs to ensure they are functioning correctly and returning the expected results.

Managing frequent client changes requires agile methodologies, effective communication, and robust testing strategies to ensure quality releases.

• Implement Agile methodologies to accommodate changes quickly, such as Scrum or Kanban.

• Establish a clear communication channel with the client to understand their needs and priorities.

• Utilize automated testing to ensure that new changes do not break existing functionality.

• Conduct regular regression testing after each change to maintai...read more

702 is represented by ZZ in the given pattern.

• The pattern seems to be assigning numbers to alphabets based on their position in the English alphabet.

• The first letter represents the position in the alphabet and the second letter represents the position multiplied by 26.

• Therefore, ZZ represents 26*26 + 26 = 702.

Improving QA processes enhances product quality and efficiency, while a QA lead ensures team alignment and strategic direction.

• Implement automated testing to reduce manual effort and increase test coverage, e.g., using Selenium for web applications.

• Establish clear communication channels between QA and development teams to facilitate early bug detection, such as daily stand-ups.

• Adopt a risk-based testing approach to prioritize testing efforts on high-impact areas, ensuring cri...read more

Key metrics provide insights into project quality, progress, and team performance, ensuring timely delivery and stakeholder satisfaction.

• Defect Density: Measures the number of defects per unit size (e.g., per 1,000 lines of code) to assess code quality.

• Test Coverage: Indicates the percentage of code tested by automated tests, helping identify untested areas.

• Test Pass Rate: The ratio of passed tests to total tests run, reflecting the stability of the application.

• Defect Resolut...read more

Oops concepts are fundamental principles of object-oriented programming. getWindowHandle() returns the handle of the current window, while getWindowHandles() returns the handles of all open windows.

• Oops concepts include inheritance, polymorphism, encapsulation, and abstraction.

• Inheritance: Reusing code from a parent class in a child class.

• Polymorphism: Objects of different classes can be treated as objects of a common superclass.

• Encapsulation: Bundling data and methods that o...read more

Agile ceremonies are key meetings in Agile methodology where QA plays a crucial role in ensuring quality throughout the development process.

• QA participates in Agile ceremonies such as Sprint Planning, Daily Stand-ups, Sprint Review, and Sprint Retrospective to provide input on quality aspects.

• QA helps in defining acceptance criteria for user stories during Sprint Planning to ensure that the team understands the quality expectations.

• QA collaborates with developers during Daily...read more

Updating the scrum board involves adding, moving, and removing tasks to reflect the current status of the project.

• Regularly update the scrum board with the progress of tasks

• Move tasks from 'To Do' to 'In Progress' to 'Done' columns as they are worked on and completed

• Remove tasks that are no longer relevant or have been completed

• Ensure the team is aware of any changes made to the scrum board