200+ Software Testing Engineer Interview Questions and Answers

The task is to find the maximal AND value and the number of subsequences having this maximal AND value.

• Iterate through all possible k-element subsequences of the given array

• Calculate the bitwise AND of each subsequence

• Track the maximal AND value and the count of subsequences with this value

• Return the maximal AND value and the count modulo 1000000007

For water bottle - scenarios include filling, emptying, spilling, and cleaning. For login page - scenarios include successful login, incorrect password, forgotten password, and account creation.

• Water bottle: filling with water, emptying water, spilling water, cleaning the bottle

• Login page: successful login, incorrect password, forgotten password, account creation

• Water bottle: dropping the bottle, losing the cap, refilling the bottle, carrying the bottle

• Login page: password re...read more

Semaphores are synchronization tools used to control access to shared resources in a concurrent system.

• Semaphores are integer variables used to control access to shared resources.

• They are typically used in multi-threaded or multi-process environments.

• Semaphores can be used to implement mutual exclusion or synchronization mechanisms.

• They have two main operations: wait (P) and signal (V).

• Wait operation decreases the value of the semaphore, while signal operation increases it.

Functional testing focuses on the behavior of the software, while non-functional testing evaluates its performance and other quality attributes.

• Functional testing verifies if the software meets the specified functional requirements.

• Non-functional testing checks the performance, reliability, usability, and other non-functional aspects of the software.

• Functional testing is concerned with what the software does, while non-functional testing is concerned with how well it does it....read more

Questions related to software testing concepts and techniques.

• To add elements to a hashmap, use the put() method.

• To handle a dropdown, use the Select class in Selenium.

• To select a particular value from a dropdown, use the selectByVisibleText() or selectByValue() method.

• To set up Android SDK, download and install Android Studio.

• A data provider is a method used in TestNG to provide test data.

• To perform a right click in action class, use the contextClick() method.

• To remove dupli...read more

I changed career paths towards Software Testing because of my passion for finding bugs and ensuring quality software.

• Passion for finding bugs and ensuring quality software

• Enjoyed testing during previous roles

• Opportunity to learn new skills and technologies

• Believe in the importance of testing in software development

• Desire for a more technical role

Severity is the impact of a bug on the system while priority is the urgency of fixing it.

• Severity is the measure of how much a bug affects the system's functionality or performance.

• Priority is the measure of how urgently a bug needs to be fixed.

• A high severity bug may not have a high priority if it does not affect critical functionality.

• A low severity bug may have a high priority if it affects critical functionality.

• Both severity and priority are used to prioritize bug fixes....read more

Regression, Retesting, Dynamic, Static, and Unit Testing are all important software testing techniques.

• Regression testing ensures that changes to the software do not introduce new bugs.

• Retesting is the process of testing a previously failed test case again after the bug has been fixed.

• Dynamic testing involves executing the code and observing its behavior.

• Static testing involves reviewing the code without executing it.

• Unit testing is the process of testing individual units or ...read more

I will discuss the defect with the developer and provide evidence to support my findings.

• Schedule a meeting with the developer to discuss the defect

• Provide evidence to support the defect, such as screenshots or logs

• Explain the impact of the defect on the system or end-users

• Collaborate with the developer to find a solution

• Escalate the issue to the project manager or higher authority if necessary

Explanation of polymorphism, function overloading/overriding, virtual function, and friend function.

• Polymorphism is the ability of an object to take on many forms.

• Function overloading is having multiple functions with the same name but different parameters.

• Function overriding is having a derived class provide its own implementation of a method that is already provided by its parent class.

• Virtual functions are functions that can be overridden in derived classes.

• Friend function...read more

I would prioritize testing based on risk and impact analysis.

• Conduct a risk and impact analysis to identify critical areas that need immediate testing.

• Focus on testing the most critical functionalities first.

• Automate repetitive and time-consuming tests to save time.

• Collaborate with the development team to identify and fix issues quickly.

• Communicate with stakeholders about the impact of delayed testing and work towards a feasible solution.

Schema is a blueprint that defines the structure of a database. I used the relational schema in my project.

• Schema is a logical representation of the entire database.

• It defines the tables, fields, relationships, and constraints.

• Relational schema is the most commonly used schema in databases.

• It organizes data into tables with rows and columns.

• Example: Employee table with columns like ID, Name, Age, Salary.

Time complexity refers to the amount of time taken by an algorithm to run, while space complexity refers to the amount of memory used by an algorithm.

• Time complexity is measured by the number of operations an algorithm performs, while space complexity is measured by the amount of memory an algorithm uses.

• An algorithm with a time complexity of O(n) will take longer to run as the input size increases, while an algorithm with a space complexity of O(n) will use more memory as th...read more

Challenges faced during testing phase

• Lack of clear requirements

• Limited access to test environment

• Time constraints

• Difficulty in reproducing bugs

• Integration issues with third-party systems

• Lack of proper documentation

• Testing on multiple platforms and devices

• Dealing with unexpected errors

Answers to common software testing questions.

• Smoke testing is a quick test to check if the basic functionality of the application is working. Sanity testing is a more thorough test to check if the major functionality of the application is working.

• Adhoc testing is an informal testing technique where the tester tries to break the application by randomly testing it without any specific test cases.

• Globalization testing is the process of testing an application to ensure that it ca...read more

Functional testing is a type of testing that verifies if the software meets the functional requirements.

• It is a black-box testing technique

• It focuses on the external behavior of the software

• It ensures that the software functions as expected

• Types of functional testing include unit testing, integration testing, system testing, acceptance testing, and regression testing

Positive testing is testing with valid inputs to check if the system behaves as expected. Negative testing is testing with invalid inputs to check if the system handles errors gracefully.

• Positive testing verifies if the system functions as expected with valid inputs.

• Negative testing verifies if the system handles errors gracefully with invalid inputs.

• Positive testing ensures that the system meets the requirements and specifications.

• Negative testing ensures that the system can...read more

Software testing is the process of evaluating a software application or system to find defects and ensure it meets the specified requirements.

• Testing is done to identify defects and ensure the software meets the requirements

• It involves executing the software with the intent of finding errors

• Testing can be done manually or with the help of automated tools

• Types of testing include functional, performance, security, and usability testing

• Testing is an iterative process that contin...read more

Merge sort is a divide and conquer algorithm. Best for large data sets. Code: https://bit.ly/3jJ5J5z

• Divide the array into two halves

• Sort each half recursively

• Merge the sorted halves

• Best for large data sets

• Code: https://bit.ly/3jJ5J5z

The program finds repeating characters in a given string.

• Iterate through each character in the string

• Store each character in a data structure

• If a character is already present in the data structure, it is a repeating character

Objects in Salesforce are database tables that allow storing data. Dynamic dashboards can be scheduled. Different types of reports include tabular, summary, matrix, and joined reports.

• Objects are database tables that store data

• Dynamic dashboards can be scheduled

• Different types of reports include tabular, summary, matrix, and joined reports

Stress testing tests the system's ability to handle extreme conditions, while load testing tests its performance under normal conditions. Manual testing is done by humans to find defects, while functional testing checks if the system meets requirements.

• Stress testing checks the system's response to extreme conditions like high traffic or low memory.

• Load testing checks the system's performance under normal conditions like average traffic.

• Manual testing is done by humans to fin...read more

I ensure accurate data entry and reconciliation with stockist records.

• Verify stockist data against company records

• Ensure accurate data entry and reconciliation

• Communicate with stockist to resolve discrepancies

• Maintain detailed records of all transactions

• Use software tools to streamline data management

Answers to common interview questions for a Software Testing Engineer position.

• Testing is the process of evaluating a system or its component(s) with the intent to find whether it satisfies the specified requirements or not.

• Scrum is an agile framework for managing work, and Sprint is a time-boxed iteration of work in Scrum.

• API methods are functions that allow developers to interact with a software application or web service.

• Smoke testing is a quick and shallow test to ensure ...read more

Different classes in Java are used to define objects and their behavior.

• Classes are the building blocks of Java programs.

• They define the properties and methods of objects.

• Some commonly used classes in Java are String, Integer, ArrayList, etc.

• Classes can be inherited to create new classes with additional features.

• Java provides a rich set of predefined classes, and developers can create their own classes.

Defect life cycle is the process of identifying, reporting, prioritizing, fixing, and verifying defects in software.

• Defect is identified by testers during testing

• Defect is reported to development team

• Development team prioritizes and fixes the defect

• Fixed defect is verified by testers

• If defect is not fixed, it goes back to development team

• If defect is fixed, it is closed

Several levels of testing include unit, integration, system, and acceptance testing.

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

• Integration testing: testing how different components/modules work together

• System testing: testing the entire system as a whole

• Acceptance testing: testing to ensure the software meets the requirements and is ready for release

To fetch data from a file in Java, we can use FileInputStream and BufferedReader classes.

• Create a FileInputStream object by passing the file path as a parameter.

• Create a BufferedReader object by passing the FileInputStream object as a parameter.

• Use the readLine() method of BufferedReader to read data from the file.

• Close the BufferedReader and FileInputStream objects using close() method.

A headless browser is a web browser without a graphical user interface that can be controlled programmatically.

• Headless browsers are used for automated testing and web scraping.

• Selenium can be used with headless browsers like Chrome, Firefox, and PhantomJS.

• Headless browsers are faster and consume less memory than traditional browsers.

• They are also useful for running tests in a continuous integration environment.

• Examples of headless browsers include Chrome Headless, Firefox He...read more

Test cases for a pen and door handle

• Pen: ink flow, writing on different surfaces, durability, grip comfort

• Door handle: opening and closing mechanism, durability, ease of use, noise level

Early activities in periodic supervision can be checked through documentation and communication with relevant stakeholders.

• Review documentation such as meeting minutes and progress reports

• Communicate with supervisors and team members involved in the early activities

• Check for any deviations from the planned activities

• Ensure that all necessary steps were taken and documented

• Verify that any issues or concerns were addressed and resolved

Virtual memory is a memory management technique that allows an operating system to use disk space as an extension of RAM.

• Virtual memory allows running programs to use more memory than physically available.

• It provides a larger address space for programs to store data and instructions.

• Virtual memory uses a combination of RAM and disk space to store data.

• It helps in multitasking by allowing multiple programs to run simultaneously.

• Virtual memory is managed by the operating system...read more

Testing Life Cycle includes planning, designing, executing and reporting. Bug Life Cycle includes reporting, assigning, fixing and verifying.

• Testing Life Cycle involves planning, designing, executing and reporting of tests.

• Bug Life Cycle involves reporting, assigning, fixing and verifying bugs.

• Testing Life Cycle starts with requirement analysis and ends with test closure.

• Bug Life Cycle starts with bug reporting and ends with bug closure.

• Testing Life Cycle ensures that the sof...read more