100+ QA Tester Interview Questions and Answers

Disintegrant time is the time taken for a tablet to break down into smaller particles in the presence of a disintegrant.

• Disintegrants are added to tablets to aid in their dissolution and absorption.

• The disintegrant time is an important factor in determining the efficacy of a tablet.

• Examples of disintegrants include croscarmellose sodium, sodium starch glycolate, and microcrystalline cellulose.

Quality control is the process of ensuring that a product or service meets the desired level of quality.

• It involves setting standards and guidelines for quality

• It includes monitoring and inspecting products or services to ensure they meet those standards

• It may involve testing and analyzing products or services to identify defects or areas for improvement

• It is an ongoing process that aims to continuously improve quality

• Examples include checking the accuracy of data entry, insp...read more

Selenium is a popular open-source automation testing tool used for web application testing.

• Selenium supports multiple programming languages like Java, Python, C#, etc.

• It can automate web browsers and simulate user interactions.

• Selenium WebDriver is the most commonly used component for writing test scripts.

• Selenium Grid allows for parallel test execution on different machines and browsers.

• Example: Selenium can be used to automate login functionality on a website.

Some improvements in the current site include enhancing user experience, fixing bugs, optimizing performance, and adding new features.

• Improve user interface for better navigation

• Fix any existing bugs or errors

• Optimize site performance for faster loading times

• Add new features to enhance functionality

• Implement responsive design for mobile compatibility

I have played a variety of games including first-person shooters, role-playing games, and puzzle games.

• First-person shooters: Call of Duty, Battlefield

• Role-playing games: The Witcher 3, Skyrim

• Puzzle games: Portal, Tetris

To print max of 5 array elements, we can sort the array and print the last 5 elements.

• Sort the array in descending order

• Print the first 5 elements of the sorted array

• Handle cases where the array has less than 5 elements

Java program to reverse a given string

• Use StringBuilder to reverse the string

• Convert the string to StringBuilder, call reverse() method, and convert back to string

Regression testing is the process of retesting a software application to ensure that new code changes have not adversely affected existing functionality.

• Performed after code changes to ensure that existing features still work as expected

• Helps in identifying any new bugs introduced by recent code modifications

• Automated tools like Selenium can be used for regression testing

• Examples: Testing a login feature after adding a new user role, testing a search function after updating t...read more

Different types of joins in SQL include inner join, left join, right join, and full outer join.

• Inner join: Returns rows when there is a match in both tables

• Left join: Returns all rows from the left table and the matched rows from the right table

• Right join: Returns all rows from the right table and the matched rows from the left table

• Full outer join: Returns rows when there is a match in either table

Types of testing include functional, non-functional, manual, automated, etc. Defect life cycle involves identification, reporting, fixing, retesting, and closing.

• Types of testing: functional, non-functional, regression, performance, usability, etc.

• Defect life cycle: identification, reporting, fixing, retesting, closing.

• Examples: Functional testing - testing the functionality of a login page. Defect life cycle - bug identified, reported, fixed, retested, closed.

Different terminologies of testing include unit testing, integration testing, system testing, regression testing, and acceptance testing.

• Unit testing: Testing individual components or modules of a software.

• Integration testing: Testing the interaction between different components or modules.

• System testing: Testing the entire system as a whole.

• Regression testing: Testing to ensure that new code changes do not adversely affect existing functionality.

• Acceptance testing: Testing t...read more

Sanity testing is a subset of regression testing that focuses on testing specific functionalities to ensure they still work after changes.

• Sanity testing is a quick and focused testing of specific functionalities to ensure they are still working after changes.

• It is usually performed after major code changes or bug fixes to ensure the core functionalities are not affected.

• Sanity testing is not exhaustive and does not cover all functionalities, but rather focuses on critical are...read more

Test case for apple

• Verify the apple is not rotten or spoiled

• Check the weight and size of the apple

• Ensure the apple is not bruised or damaged

• Test the sweetness and texture of the apple

• Confirm the apple is free from pesticides and chemicals

Remove a specific character from a string

• Iterate through each character in the string

• Check if the character is the one to be eliminated

• Build a new string without the eliminated character

Oops concepts refer to Object-Oriented Programming principles such as Inheritance, Encapsulation, Polymorphism, and Abstraction.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex implementation details and showing only the necessary features.

I have experience in using various test management tools.

• I have used JIRA for bug tracking and test case management.

• I have also used HP ALM for test management and reporting.

• I am familiar with TestRail for test case management and execution.

• I have experience in creating and maintaining test plans, test cases, and test suites in these tools.

• I have also worked with custom test management tools developed in-house by companies.

Regression testing is the process of retesting a software application to ensure that new code changes have not adversely affected existing functionality.

• Performed after code changes to ensure existing functionality still works

• Helps catch bugs introduced by new code

• Can be automated to save time and effort

• Examples: testing a login feature after adding a new user role, testing a search function after updating the algorithm

Soft working refers to a flexible work arrangement that allows employees to work from home or outside the office.

• Soft working is a type of flexible work arrangement

• It allows employees to work from home or outside the office

• Soft working can improve work-life balance and increase productivity

• Examples of soft working include telecommuting, remote work, and flexible schedules

OOPS concepts are the foundation of object-oriented programming, including inheritance, encapsulation, polymorphism, and abstraction.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex implementation details and showing only the necessary features.

A framework is a set of guidelines, libraries, and tools used to develop and test software applications.

• Framework provides a structure for developers to build and test applications.

• It includes pre-written code, libraries, and tools to facilitate development.

• Frameworks help in maintaining consistency, scalability, and efficiency in software development.

• Examples of frameworks include Selenium for automated testing, React for front-end development, and Django for web development...read more

OOPs concepts refer to Object-Oriented Programming concepts which include inheritance, encapsulation, polymorphism, and abstraction.

• Inheritance allows a class to inherit properties and behavior from another class.

• Encapsulation refers to the bundling of data and methods that operate on the data into a single unit.

• Polymorphism allows objects to be treated as instances of their parent class.

• Abstraction hides the complex implementation details and only shows the necessary feature...read more

Bug cycle is the process of identifying, reporting, fixing, retesting, and closing bugs in a software development project.

• Bug is identified by tester during testing phase

• Bug is reported to development team

• Development team fixes the bug

• Tester retests the bug fix

• If bug is resolved, it is closed

Priority in software testing refers to the order in which defects or test cases should be addressed based on their impact and importance.

• Priority helps in determining which issues should be fixed first to ensure the most critical functionalities are working properly.

• Priority is usually assigned based on factors like severity, impact on users, and business requirements.

• For example, a critical bug that causes the application to crash would have a higher priority than a minor co...read more

SDLC (Software Development Life Cycle) is a process used by software development teams to design, develop, test, and deploy software.

• SDLC consists of several phases including planning, analysis, design, implementation, testing, and maintenance.

• Each phase has its own set of activities and deliverables that must be completed before moving on to the next phase.

• SDLC helps ensure that software projects are completed on time, within budget, and meet the requirements of stakeholders...read more

A program to sort an array of strings

• Use a sorting algorithm like bubble sort, selection sort, or quicksort

• Consider the length of the strings for sorting

• Implement a custom comparator function for sorting

String content comparison involves checking if two strings have the same content.

• Use string comparison methods like equals() or compareTo() to compare strings.

• Consider case sensitivity when comparing strings.

• Check for leading or trailing whitespaces that may affect the comparison.

• Handle special characters or escape sequences appropriately.

• Example: String str1 = "hello"; String str2 = "Hello"; boolean result = str1.equalsIgnoreCase(str2);

To find the xpath of a site, inspect the element in the browser and use developer tools.

• Inspect the element on the website using browser developer tools

• Right click on the element and select 'Inspect' to view the HTML code

• Locate the element in the HTML code and right click to copy the xpath

• Use the copied xpath in your automation scripts for testing

Creating customer API in Postman for testing purposes

• Use Postman to create a new request with the necessary endpoint and parameters

• Set up authentication if required for the API

• Add headers, body, and any other necessary information for the request

• Test the API request to ensure it is functioning correctly

• Save the request in a collection for future testing

BDD is a software development approach that focuses on collaboration between developers, testers, and business stakeholders, while Cucumber is a tool used for implementing BDD in testing.

• BDD is a development approach that emphasizes collaboration and communication between different stakeholders, such as developers, testers, and business analysts.

• Cucumber is a testing tool that allows for the implementation of BDD practices by writing test cases in plain text using Gherkin syn...read more

throw is a keyword used to throw an exception in Java, while throws is used in method signature to declare exceptions that can be thrown by the method.

• throw is used to throw an exception explicitly in Java

• throws is used in method signature to declare exceptions that can be thrown by the method

• Example: throw new Exception();

• Example: public void method() throws Exception {};

Coding a function to check if a number is a palindrome

• Create a function that takes in a number as input

• Convert the number to a string to easily check for palindrome

• Reverse the string and compare it with the original string to check for palindrome

• Return true if the number is a palindrome, false otherwise

Types of software testing include unit testing, integration testing, system testing, acceptance testing, and regression testing.

• Unit testing: Testing individual components or modules of the software.

• Integration testing: Testing how different modules work together.

• System testing: Testing the entire system as a whole.

• Acceptance testing: Testing to ensure the software meets the requirements of the end users.

• Regression testing: Testing to ensure that new code changes do not adver...read more

Test classes are a collection of test methods that are grouped together to test a specific functionality or feature.

• Test classes help organize and structure test cases for easier management.

• They can contain setup and teardown methods to prepare the test environment.

• Test classes can be used to group related test cases and ensure better maintainability.

• Examples: LoginTest, ShoppingCartTest, PaymentTest

Print the given string as an array of strings

• Use a loop to iterate through each character of the string and print it as a separate string

• Store each character in a separate element of an array and then print the array

• Example: If the given string is 'hello', the output should be ['h', 'e', 'l', 'l', 'o']

Test cases are scenarios designed to verify the functionality of a system or application.

• Test cases outline the steps to be taken, the expected outcome, and the actual outcome.

• They cover both positive and negative scenarios to ensure all aspects of the system are tested.

• Examples include login with valid credentials, login with invalid credentials, and password reset functionality.

A test plan is a document outlining the scope, approach, resources, and schedule of testing activities.

• Defines the objectives and scope of testing

• Outlines the test strategy and approach

• Identifies resources and schedule for testing

• Includes test cases, test scenarios, and test data

• Describes the roles and responsibilities of team members

A test case is a set of conditions or variables under which a tester will determine whether a system under test satisfies requirements or works correctly.

• Test case includes test inputs, execution conditions, and expected results.

• It helps in identifying defects in the software.

• Examples: Login with valid credentials, Add item to cart and proceed to checkout.

Automation techniques refer to the methods and tools used to automate testing processes.

• Use of automation tools like Selenium, Appium, or JUnit

• Writing test scripts in languages like Java, Python, or Ruby

• Implementing continuous integration and continuous deployment (CI/CD) pipelines

• Utilizing frameworks like TestNG or Cucumber for test automation

• Exploring record and playback tools for quick test creation

OOPS concepts refer to Object-Oriented Programming principles like inheritance, encapsulation, polymorphism, and abstraction.

• Inheritance: Allows a class to inherit properties and behavior from another class.

• Encapsulation: Bundling data and methods that operate on the data into a single unit.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex implementation details and showing only the necessary features.

Testing is the process of evaluating a system or application to identify defects or errors.

• Testing involves executing software with the intent of finding bugs or issues.

• It ensures that the software meets the specified requirements and functions correctly.

• Types of testing include functional testing, regression testing, performance testing, etc.

Regression testing is the process of retesting a software application to ensure that new code changes have not adversely affected existing functionality.

• Regression testing is performed after code changes to verify that the existing features still work correctly.

• It helps in identifying any defects introduced by new code changes.

• Automated testing tools are often used for regression testing to save time and effort.

• Regression testing can be done manually as well, but it is more t...read more

STLC (Software Testing Life Cycle) is a process used by QA testers to ensure the quality of software products.

• STLC involves planning, designing, executing, and reporting on tests.

• It includes phases like requirement analysis, test planning, test design, test execution, and test closure.

• Each phase has specific activities and deliverables to ensure thorough testing of the software.

• STLC helps in identifying defects early in the development cycle, reducing costs and improving prod...read more

To find prime numbers in Java, iterate through numbers and check if they are divisible only by 1 and themselves.

• Iterate through numbers from 2 to n

• For each number, check if it is divisible only by 1 and itself

• If it is, add it to the list of prime numbers

Agile is iterative and flexible, while waterfall is sequential and rigid.

• Agile involves incremental development and frequent feedback loops.

• Waterfall follows a linear approach with distinct phases like requirements, design, development, testing, and deployment.

• Agile allows for changes and adaptations throughout the project.

• Waterfall requires detailed planning upfront and minimal changes once development begins.

• Agile is better suited for projects with evolving requirements, wh...read more

A test framework is a set of guidelines or rules used for creating and designing test cases and test scripts.

• Test framework provides a structure for organizing and executing automated tests.

• It includes tools, libraries, and coding standards to support testing activities.

• Examples of test frameworks include Selenium, JUnit, and TestNG.

A prime number is a number greater than 1 that can only be divided by 1 and itself.

• A prime number is a number greater than 1.

• It can only be divided by 1 and itself.

• Examples of prime numbers: 2, 3, 5, 7, 11, 13, 17, 19, 23, 29

Waits in Selenium are used to make tests more reliable by waiting for certain conditions to be met before proceeding.

• 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.

• Fluent Wait polls the DOM for a certain amount of time before throwing an exception.