600+ Softwaretest Engineer Interview Questions and Answers

Boundary value analysis is a testing technique to identify errors at the boundaries of input values.

• For User ID field, test with values just below the minimum limit, at the minimum limit, just above the maximum limit, and at the maximum limit

• For Password field, test with values just below the minimum limit, at the minimum limit, just above the maximum limit, and at the maximum limit

• Ensure that the system handles these boundary values correctly and does not allow invalid input...read more

Approach to handle a blocker defect just before release and convincing the developer to fix it.

• Assess the impact of the defect on the release and prioritize it accordingly

• Provide clear and concise information about the defect to the developer

• Explain the potential risks and consequences of not fixing the defect

• Collaborate with the developer to find a solution and provide support if needed

• Highlight the importance of meeting the release date and the impact of the defect on the p...read more

Answers to common interview questions for Software Test Engineer position.

• STLC (Software Testing Life Cycle) is a process followed to ensure quality in software testing.

• SDLC (Software Development Life Cycle) is a process followed to develop software.

• Bug Life Cycle is a process followed to track and manage bugs found during testing.

• Smoke testing is a high-level testing to check if the application is stable enough for further testing.

• Sanity testing is a narrow and deep testing ...read more

Answering questions related to software testing, algorithms, and object-oriented programming concepts.

• To print the frequency of each alphabet in a string, create a hashmap to store the count of each alphabet.

• To swap two numbers using constant space, use XOR operation: a = a ^ b, b = a ^ b, a = a ^ b.

• Abstraction is hiding the implementation details and showing only the necessary features. Encapsulation is bundling data and methods into a single unit. Polymorphism allows object...read more

The mode of testing is decided based on project requirements, risks, and available resources.

• Analyze project requirements to determine the appropriate mode of testing

• Assess the risks associated with the project and allocate testing mode accordingly

• Consider available resources such as time, budget, and personnel

• Choose the mode of testing that provides the most comprehensive coverage

• Examples of testing modes include manual, automated, exploratory, regression, and performance te...read more

I would prioritize the remaining tasks based on their criticality and impact on the overall delivery.

• Assess the remaining tasks and their impact on the overall delivery

• Prioritize the tasks based on their criticality and impact

• Communicate the situation to the team and stakeholders

• Work with the team to complete the remaining tasks as efficiently as possible

The y c malloc function returns memory from the heap while y stack operates in reverse.

• The y c malloc function is used to allocate memory dynamically from the heap.

• The y stack operates in reverse, meaning the last item pushed onto the stack is the first item popped off.

• This can cause issues if the programmer is not careful with memory allocation and stack usage.

Selenium RC is a deprecated tool for automating web browsers. Scripts can be run on different stages using different configurations.

• Selenium RC stands for Remote Control

• It allows running tests on multiple browsers and platforms

• Scripts can be run on different stages by changing the configuration settings

• Selenium RC is now deprecated and replaced by Selenium WebDriver

Answers to common questions asked in a Software Test Engineer interview

• Software testing is necessary to ensure the quality, reliability, and performance of software applications

• Regression testing is re-testing of a software application to ensure that new code changes have not adversely affected existing functionality

• RTM (Requirement Traceability Matrix) is used to trace requirements throughout the software development and testing process

• The owner of a rejected bug is typicall...read more

API testing is a type of software testing that involves testing APIs directly and verifying their functionality, reliability, performance, and security.

• API testing involves testing the communication between different software systems

• It verifies the functionality, reliability, performance, and security of APIs

• API testing can be performed using tools like Postman, SoapUI, and JMeter

• API testing can be automated using scripting languages like JavaScript and Python

I will follow a systematic approach to resolve the bug.

• First, I will try to reproduce the bug to understand the issue.

• Then, I will analyze the root cause of the bug.

• Next, I will prioritize the bug based on its severity and impact.

• After that, I will create a bug report with all the necessary details.

• Finally, I will work with the development team to fix the bug and verify the fix.

• If the bug cannot be resolved immediately, I will communicate the status to the stakeholders.

Class is a blueprint for creating objects. Objects are instances of a class. 2nd maximum can be found by sorting array and returning the second last element. Stack data structure is used in browser history, undo-redo operations, etc.

• Class is a template for creating objects with similar properties and methods

• Objects are instances of a class that can have unique values for their properties

• To get 2nd maximum from an array, sort it in descending order and return the second elemen...read more

Performance testing is the process of evaluating the speed, responsiveness, stability, and scalability of a software application.

• Types of performance testing include load testing, stress testing, endurance testing, and spike testing.

• Load testing checks the application's performance under normal and peak loads.

• Stress testing evaluates the application's performance under extreme conditions.

• Endurance testing checks the application's performance over a prolonged period of time.

• Sp...read more

SQL query to find the highest salary from a specific department

• Use the MAX() function to find the highest salary

• Filter the results based on the specific department using WHERE clause

• Join the employee table with the department table if necessary

Answering questions related to web development technologies.

• HTML is a markup language used for creating web pages.

• CSS is a styling language used for designing web pages.

• OOPs is a programming paradigm based on the concept of objects.

• Front-end development involves creating the user interface of a website using HTML, CSS, and JavaScript.

• Back-end development involves creating the server-side of a website using programming languages like PHP, Python, and Ruby.

• Web development invol...read more

Static variables and methods belong to the class rather than the instance of the class.

• Static variables are declared with the 'static' keyword and are shared among all instances of the class.

• Static methods are also declared with the 'static' keyword and can be called without creating an instance of the class.

• Static methods cannot access non-static variables or methods of the class.

• Example: 'public static int count;' declares a static variable 'count' that can be accessed by a...read more

No, different methods are required for different operations in API.

• Different methods are required for different HTTP verbs like GET, POST, PUT, DELETE.

• Methods should be designed to perform specific actions like fetching data, updating data, etc.

• Using a single method for all operations can lead to confusion and errors.

• For example, using GET method for updating data can cause security issues.

To count the Google pages shown on search result, you can look at the page numbers at the bottom of the search results.

• Scroll to the bottom of the search results page to see the page numbers.

• Each page number represents a different page of search results.

• Count the total number of page numbers to determine the total number of Google pages shown.

Kanpur Central Railway station is famous for being one of the busiest and largest railway stations in India.

• One of the busiest and largest railway stations in India

• Serves as a major transportation hub for the region

• Connects Kanpur to various parts of the country

• Historical significance as an important railway junction

Answers to common interview questions for Software Test Engineer position

• Locators in Selenium are used to locate elements on a web page, such as ID, name, class name, tag name, link text, and XPath

• Example of XPath for an element: //input[@id='username']

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

• Smoke testing is a preliminary testing to check if the software build is stable enough for further testing, San...read more

Java is a popular programming language used for developing various applications.

• Java is an object-oriented language

• It is platform-independent

• It is used for developing web, mobile, and desktop applications

• Java programs are compiled into bytecode and run on Java Virtual Machine (JVM)

Retesting is testing the same functionality again after fixing the defects. Regression testing is testing the unchanged functionality to ensure that it still works after changes.

• Retesting is done to ensure that the defects reported in the previous cycle have been fixed.

• Regression testing is done to ensure that the changes made to the software have not affected the existing functionality.

• Retesting is done on the same test cases that failed previously.

• Regression testing is done...read more

Constraints faced in Data Validation with illustrations

• 1. Format constraints: Ensuring data follows a specific format (e.g. date in MM/DD/YYYY format)

• 2. Range constraints: Validating data falls within a specified range (e.g. age between 18-65)

• 3. Mandatory constraints: Ensuring required fields are not empty (e.g. email address field)

• 4. Consistency constraints: Checking data consistency across multiple fields (e.g. start date before end date)

• 5. Uniqueness constraints: Verifying...read more

To create a Feature file and snippet for features file.

• Create a new feature file with a descriptive name

• Write the feature description in Gherkin syntax

• Add scenarios with steps in Gherkin syntax

• Generate a snippet for each step

• Implement the step definitions in code

• Test the feature using a test runner

Ceiling and floor are math functions in C. Pre and post increment are operators in OOPs concept.

• Ceiling function rounds up a given number to the nearest integer. Example: ceil(4.2) = 5

• Floor function rounds down a given number to the nearest integer. Example: floor(4.8) = 4

• Pre-increment operator increments the value of a variable before using it in an expression. Example: ++x

• Post-increment operator increments the value of a variable after using it in an expression. Example: x+...read more

AVL tree is a self-balancing binary search tree where the heights of the two child subtrees of any node differ by at most one.

• AVL trees are commonly used in database systems for indexing and searching.

• They are also used in compilers for optimizing code generation.

• Real life example: AVL trees can be used in a file system to efficiently store and retrieve data in a balanced manner.

Critical section is a code segment that should not be executed by multiple threads simultaneously. Solution is to use synchronization techniques.

• Critical section is a part of code that should be executed by only one thread at a time

• Multiple threads accessing critical section can lead to race conditions and data inconsistency

• Synchronization techniques like locks, semaphores, and monitors can be used to ensure mutual exclusion

• Locks can be used to acquire and release access to c...read more

Encapsulation, Inheritance, Polymorphism, and Abstraction are the OOP concepts used in my framework.

• Encapsulation: Used to hide the internal details of an object and provide a public interface.

• Inheritance: Used to create a new class from an existing class, inheriting its properties and methods.

• Polymorphism: Used to perform a single action in different ways based on the object's type.

• Abstraction: Used to provide a simplified view of complex systems by hiding unnecessary detail...read more

A hash map is a data structure that stores key-value pairs, using a hash function to map keys to indexes in an array.

• Hash map uses a hash function to determine the index of the key in the underlying array.

• Collision resolution techniques like chaining or open addressing are used to handle cases where multiple keys hash to the same index.

• Custom objects used as keys must override the hashCode() and equals() methods for proper functioning in a hash map.

Yes, monkey testing can be done even if you are new to the project.

• Monkey testing is a random testing technique where inputs are generated randomly without any prior knowledge of the system.

• Being new to the project can actually be beneficial as it allows for a fresh perspective and unbiased testing.

• However, it is important to have a basic understanding of the project's requirements and functionalities before conducting monkey testing.

• Examples of monkey testing tools include M...read more

Yes, I can write a query to fetch data from a table which matches the records.

• Use SELECT statement to fetch data from the table

• Use WHERE clause to specify the condition for matching records

• Example: SELECT * FROM table_name WHERE column_name = 'value'

Collaborate with developer to understand the issue and gather more information for better reproduction

• Collaborate with developer to understand the steps followed and environment used

• Check if there are any specific conditions or configurations required to reproduce the defect

• Try different scenarios or inputs to trigger the defect

• Analyze logs or error messages to identify potential causes of the issue

OOPs is a programming paradigm based on the concept of objects. Linked list is a data structure. Pointers are variables that store memory addresses. Copy constructor creates a new object by copying an existing object.

• OOPs is based on objects

• Linked list is a data structure

• Pointers store memory addresses

• Copy constructor creates new object by copying existing object

Iterate through array and check if element is greater than its adjacent elements

• Iterate through array and check if current element is greater than element at index-1 and index+1

• Return the first element found that satisfies the condition

• Handle edge cases where element is at the beginning or end of array

Feature file is a file that contains high-level description of a software feature. Scenario is a specific instance of a feature.

• Feature file is written in Gherkin language

• It describes the behavior of a feature in plain English

• Scenario is a set of steps that describe a specific instance of a feature

• It includes preconditions, actions and expected outcomes

• Feature file and scenarios are used in Behavior Driven Development (BDD)

Code to print palindrome numbers from 1 to 100

• Loop through numbers 1 to 100

• Convert each number to string and check if it's equal to its reverse

• If yes, print the number

Data test in Backend involves verifying the accuracy and integrity of data stored in the database.

• Verify data types and formats

• Check for missing or duplicate data

• Test data retrieval and manipulation

• Perform boundary value analysis

• Use SQL queries to validate data

• Ensure data security and privacy

Future technical advancements may include AI, automation, IoT, and quantum computing.

• Artificial Intelligence (AI) will continue to advance and be integrated into various software systems.

• Automation will become more prevalent, reducing manual testing efforts.

• Internet of Things (IoT) will expand, leading to increased testing requirements for connected devices.

• Quantum computing may revolutionize software testing by solving complex problems more efficiently.

Regression, black box, and functional testing are types of software testing. Bug, defect, and error are terms used to describe issues found during testing. A test plan is a document outlining the testing approach. TCD stands for Test Case Document.

• Regression testing checks if changes to the software have introduced new bugs or caused existing ones to reappear.

• Black box testing focuses on testing the functionality of the software without knowledge of its internal workings.

• Func...read more

I handle real-time scenarios by analyzing the situation, prioritizing tasks, and taking quick decisions.

• I analyze the situation and identify the critical components

• I prioritize tasks based on their impact on the system

• I take quick decisions to resolve the issue and minimize the impact

• I communicate effectively with the team to ensure everyone is on the same page

Answers to software testing interview questions

• Ascy method is not a known term in software testing

• Inner exception is an exception that occurs within another exception

• Ref and out are both used for passing parameters by reference, but out requires the variable to be initialized before use

• Singleton design pattern is a creational pattern that ensures only one instance of a class is created and provides a global point of access to it

• Sealed class is a class that cannot be inherited...read more

Smoke testing is a subset of regression testing, while sanity testing is a subset of acceptance testing.

• Smoke testing is done to check if the critical functionalities of the software are working fine after a build.

• Sanity testing is done to check if the new changes or fixes in the software are working fine and not breaking the existing functionalities.

• Smoke testing is done before the actual testing process begins, while sanity testing is done after the completion of the testin...read more

Different validations in testing include input validation, boundary validation, error handling validation, and data validation.

• Input validation ensures that the system accepts only valid inputs.

• Boundary validation checks the system's behavior at the boundaries of valid input ranges.

• Error handling validation verifies that the system handles errors gracefully.

• Data validation ensures that the data processed by the system is accurate and consistent.

This is a list of programming concepts and terms.

• C tokens are the basic building blocks of C programming language.

• Encapsulation is the process of hiding implementation details and exposing only necessary information.

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

• Array is a collection of similar data types.

• Pointers are variables that store the memory address of another variable.

• Applet is a small program that runs within a web browser.

• Java is a high-level progra...read more

Questions related to OOPS, data structures, DBMS, and SDLC models.

• OOPS concept refers to the principles of object-oriented programming such as encapsulation, inheritance, and polymorphism.

• Array is a static data structure while linked list is a dynamic data structure.

• DBMS stands for Database Management System which is a software system used to manage and organize data.

• DDL (Data Definition Language) is used to define the database schema while DML (Data Manipulation Language) is...read more

An array is a data structure that stores a collection of elements of the same type in a contiguous memory location.

• Arrays are declared by specifying the data type of the elements and the number of elements in square brackets.

• Example: String[] names = new String[5];

• Elements in an array can be accessed using their index, starting from 0.

• Example: String firstElement = names[0];