100+ Software QA Engineer Interview Questions and Answers

I faced exceptions related to compatibility, synchronization, and data handling while creating a framework.

• Compatibility issues with different browsers and operating systems

• Synchronization problems with dynamic web elements

• Handling large amounts of data and optimizing performance

• Handling unexpected errors and exceptions

• Maintaining code modularity and reusability

SDLC focuses on software development phases, while STLC emphasizes testing phases to ensure quality.

• SDLC encompasses all phases of software development, including planning, design, coding, and maintenance.

• STLC is specifically concerned with the testing phases, including test planning, design, execution, and closure.

• SDLC includes stages like requirement analysis, system design, implementation, and deployment.

• STLC includes stages like test planning, test case development, test ...read more

Bug tracking is the process of identifying, reporting, prioritizing, and resolving software defects.

• Bugs are identified through testing or user feedback

• Bugs are reported in a bug tracking tool with details like steps to reproduce, severity, and priority

• Bugs are prioritized based on their impact and severity

• Bugs are assigned to developers for resolution

• Developers fix the bugs and mark them as resolved

• Testers verify the fix and mark the bug as closed or reopen if the issue pers...read more

Design test cases for a deseal car engine

• Test for engine starting and stopping

• Test for oil pressure and temperature

• Test for fuel efficiency

• Test for exhaust emissions

• Test for engine noise and vibration

OpenGL is a graphics API used in Android to render 2D and 3D graphics.

• OpenGL is a cross-platform API that allows developers to create high-performance graphics applications.

• It uses a pipeline-based model to process graphics data.

• OpenGL ES (Embedded Systems) is the version of OpenGL used in Android.

• It supports features like texture mapping, lighting, and shading.

• Developers can use OpenGL in Android to create games, visualizations, and other graphics-intensive applications.

Java programs to find string frequency, check for a-z characters, and swap numbers without extra variables.

• Frequency of String: Use a HashMap to count occurrences of each character in the string. Example: 'hello' -> {h=1, e=1, l=2, o=1}.

• Check for a-z: Iterate through the string and use a boolean array to track presence of each character from 'a' to 'z'.

• Swap Numbers: Use XOR operation to swap two numbers without a temporary variable. Example: a = a ^ b; b = a ^ b; a = a ^ b;

Wire EDM processes offer higher precision, finer finishes, and the ability to cut harder materials than milling processes.

• Wire EDM uses a thin wire to cut through the material, resulting in a finer finish than milling processes.

• Wire EDM can cut harder materials than milling processes, such as tungsten carbide and titanium.

• Wire EDM is highly precise, with tolerances as low as +/- 0.0001 inches.

• Milling processes are better suited for larger parts and faster production rates.

• Wir...read more

Yes, I am familiar with automation testing and various frameworks used for efficient software quality assurance.

• Automation testing improves efficiency by running tests faster than manual testing.

• Common frameworks include Selenium for web applications and Appium for mobile apps.

• I have experience with TestNG and JUnit for structuring test cases in Java.

• Continuous integration tools like Jenkins can be integrated with automation frameworks for seamless testing.

STLC, bug severity priority, waits in Selenium, Java OOPs

• STLC stands for Software Testing Life Cycle and includes phases like requirement analysis, test planning, test design, test execution, and test closure

• Bug severity is the impact of a bug on the system, while bug priority is the order in which bugs should be fixed

• Waits in Selenium are used to make the test script wait for a certain condition to be met before proceeding

• Java OOPs concepts include classes, objects, inherita...read more

List is mutable and Tuples are immutable in Python.

• Lists are enclosed in square brackets [], while Tuples are enclosed in parentheses ().

• Elements of a list can be changed, added or removed, while elements of a tuple cannot be changed.

• Lists are slower than tuples due to their mutable nature.

• Tuples are used for fixed data, while lists are used for dynamic data.

• Lists are used for homogenous data, while tuples are used for heterogenous data.

Smoke testing checks basic functionality, while sanity testing verifies specific functionalities after changes.

• Smoke testing is a preliminary test to check if the build is stable enough for further testing.

• Sanity testing is a subset of regression testing focused on verifying specific functionalities after changes.

• Example of smoke testing: Verifying that the application launches and the main features are accessible.

• Example of sanity testing: Checking if a newly implemented fea...read more

Writing effective test cases involves clarity, structure, and comprehensive coverage of requirements.

• Test Case ID: A unique identifier for each test case (e.g., TC001).

• Test Description: A brief summary of what the test case will validate (e.g., 'Verify login functionality with valid credentials').

• Preconditions: Any setup required before executing the test (e.g., 'User must be registered').

• Test Steps: Detailed steps to execute the test (e.g., '1. Open the login page 2. Enter u...read more

Various bug report tools help streamline the software testing process, enhancing collaboration and tracking of issues.

• JIRA: A popular project management tool that includes bug tracking features.

• Bugzilla: An open-source bug tracking system widely used in software development.

• MantisBT: A web-based bug tracking tool that is easy to use and customizable.

• Trello: While primarily a project management tool, it can be adapted for bug tracking.

• Asana: Another project management tool tha...read more

I possess strong analytical skills, attention to detail, and proficiency in automation testing with a focus on Python.

• Proficient in automation testing using Selenium and Python, enabling efficient test case execution.

• Strong understanding of software development life cycle (SDLC) and agile methodologies, ensuring timely delivery of quality software.

• Experience in writing and executing test cases, as well as documenting defects using tools like JIRA.

• Skilled in performance testin...read more

STLC stands for Software Testing Life Cycle. It is a process followed to ensure quality in software development.

• STLC consists of several phases including requirement analysis, test planning, test case development, test execution, and test closure.

• Requirement analysis involves understanding the software requirements and identifying test scenarios.

• Test planning involves creating a test plan, test strategy, and test estimation.

• Test case development involves creating test cases b...read more

To check processes running in a Linux machine, you can use commands like ps, top, and htop.

• Use 'ps' command to display information about processes

• Use 'top' command to display dynamic real-time view of processes

• Use 'htop' command for an interactive process viewer

There are multiple locator types used in software testing.

• There are 8 types of locators: ID, Name, Class Name, Tag Name, Link Text, Partial Link Text, CSS Selector, and XPath.

• Locators are used to identify web elements on a page.

• The choice of locator type depends on the specific element being located and the structure of the HTML code.

• Using unique locators can improve the stability and maintainability of automated tests.

The Page Object Model is a design pattern that enhances test maintenance and reduces code duplication in automated testing.

• Encapsulates page elements and actions in a class, promoting reusability.

• Improves test readability by abstracting UI interactions, e.g., 'login()' instead of finding elements directly.

• Facilitates easier updates; changes in UI require updates only in the page object, not in every test case.

• Supports better organization of test code, making it easier to mana...read more

Unique records in tables can be found using SELECT DISTINCT statement.

• Use SELECT DISTINCT statement to retrieve unique records from a table

• Specify the column names in SELECT statement to retrieve unique records based on those columns

• Use GROUP BY clause to group the records based on a column and retrieve unique records for each group

Yes, I have designed an automated testing framework from scratch, focusing on scalability and maintainability.

• Defined the framework's architecture using a modular approach for easy updates.

• Utilized Selenium WebDriver for web application testing, ensuring cross-browser compatibility.

• Integrated TestNG for test management and reporting, allowing for parallel test execution.

• Implemented Page Object Model (POM) to enhance code reusability and readability.

• Incorporated CI/CD tools li...read more

Effective bug management involves prioritization, categorization, and collaboration to ensure timely resolution.

• Prioritize bugs based on severity and impact. For example, critical bugs affecting user data should be addressed first.

• Categorize bugs into types (e.g., UI, performance, security) to streamline testing and resolution efforts.

• Use a bug tracking tool (like JIRA or Bugzilla) to maintain a clear overview of all reported issues and their statuses.

• Regularly review and upd...read more

Test design techniques, Test cases and Differentiate the different types of testing

• Test design techniques involve identifying test scenarios, selecting test cases, and prioritizing them based on risk.

• Test cases are specific inputs, actions, or conditions that are used to verify the functionality of a system.

• Different types of testing include functional testing, performance testing, security testing, and usability testing.

• Functional testing ensures that the system meets the sp...read more

Write a member function to find the second largest number in an array.

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

• Handle edge cases like when the array has less than 2 elements.

• Consider sorting the array and returning the second last element for a simpler solution.

Test plan for login functionality on a website

• Create test cases for valid username and password

• Create test cases for invalid username and password

• Test for password strength requirements

• Test for account lockout after multiple failed login attempts

Selenium locators for handling web-based pop-ups

• Use switchTo() method to switch to the pop-up window

• Use getWindowHandles() method to get the window handles

• Use getWindowHandle() method to get the current window handle

• Use close() method to close the pop-up window

• Use quit() method to close all windows

Configure Jenkins pipeline to automate test execution for software projects.

• 1. Create a Jenkinsfile in your project repository to define the pipeline.

• 2. Use stages to organize the pipeline, e.g., 'Build', 'Test', 'Deploy'.

• 3. In the 'Test' stage, specify the testing framework, e.g., 'JUnit' or 'Selenium'.

• 4. Use 'sh' or 'bat' commands to run tests, e.g., 'sh './gradlew test'' for Gradle projects.

• 5. Configure post-build actions to publish test results, e.g., 'JUnit Plugin' for t...read more

Regression testing is testing the entire system after making changes while retesting is testing the specific area where a defect was fixed.

• Regression testing ensures that changes made to the system do not have any unintended consequences on the existing functionality.

• Retesting is done to ensure that a defect has been fixed and does not reoccur.

• Regression testing is done after every major change in the system while retesting is done after every defect fix.

• Regression testing is...read more