700+ Softwaretest Engineer Interview Questions and Answers

Integration of Excel in JMeter can be done using the Apache POI library.

• Download and add the Apache POI library to JMeter's classpath.

• Create a Test Plan and add a Thread Group.

• Add a Sampler and choose the appropriate request type.

• Add a Listener and choose the appropriate output format.

• Use the POI classes to read or write data to Excel files.

• Use JMeter variables to pass data between requests.

The types of locators used in Cypress are CSS selectors, XPath selectors, and custom locators.

• CSS selectors are the most commonly used locators in Cypress and are used to select elements based on their attributes, classes, or IDs.

• XPath selectors are used to locate elements based on their position in the HTML document or their attributes.

• Custom locators can be created using Cypress commands like 'get' and 'contains' to find elements based on specific criteria.

We used a combination of black box and white box testing techniques in our project.

• Black box testing: Testing the functionality of the software without knowledge of its internal structure.

• White box testing: Testing the internal structure and implementation of the software.

• Example: For black box testing, we created test cases based on the software requirements and validated the expected outputs. For white box testing, we performed code reviews and used techniques like statemen...read more

Selenium IDE supports Firefox browser only.

• Selenium IDE is a Firefox plugin.

• It records and plays back user interactions with the Firefox browser.

• It does not support other browsers like Chrome, Safari, etc.

300 represents multiple choices and 301 represents moved permanently.

• 300 status code represents multiple choices, indicating that the requested resource has multiple representations available.

• 301 status code represents moved permanently, indicating that the requested resource has been permanently moved to a new URL.

• Both status codes are used in HTTP responses to indicate the status of a requested resource.

• Examples of 300 status code include a webpage with multiple language op...read more

The test that should be done first is the one that covers the most critical and high-risk functionality.

• Identify critical and high-risk functionality

• Prioritize tests based on risk

• Perform tests in a logical order

• Re-evaluate test priorities as development progresses

Some common Spring Boot annotations used in projects are @SpringBootApplication, @RestController, @Autowired, @GetMapping, @PostMapping, @Service, @Repository.

• @SpringBootApplication - Used to mark the main class of a Spring Boot application.

• @RestController - Used to define a RESTful controller.

• @Autowired - Used for automatic dependency injection.

• @GetMapping - Used to handle HTTP GET requests.

• @PostMapping - Used to handle HTTP POST requests.

• @Service - Used to mark a class as a...read more

STLC stands for Software Testing Life Cycle. Agile principles include iterative development, customer collaboration, and continuous improvement.

• STLC is a process followed by software testers to ensure quality of the software product.

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

• Agile principles prioritize customer satisfaction, working software, and responding to change.

• Iterative development involves delivering smal...read more

A method is a function associated with a class, while a constructor is a special method used to initialize objects.

• Method is used to perform a specific task within a class.

• Constructor is used to initialize objects of a class.

• Methods can have any name, while constructors must have the same name as the class.

• Methods can have return types, constructors do not have return types.

• Example: Method - calculateArea() in a class Rectangle. Constructor - Rectangle() to initialize a Recta...read more

Regression tests changes in existing functionality, retesting tests fixed defects, and sanity tests basic functionality.

• Regression testing ensures that changes in code do not affect existing functionality.

• Retesting is done to ensure that defects have been fixed and do not reoccur.

• Sanity testing is a quick check to ensure that basic functionality is working as expected.

• Regression and retesting are usually done after changes have been made to the code, while sanity testing is d...read more

Regression testing focuses on retesting modified code to ensure no new bugs are introduced, while system testing evaluates the entire system's functionality.

• Regression testing is performed on modified code to ensure that new changes do not introduce new bugs.

• System testing evaluates the entire system's functionality to ensure it meets the specified requirements.

• Regression testing is typically automated to save time and effort.

• System testing is usually performed manually to si...read more

The correct structure of a DBMS diagram includes entities, attributes, relationships, and keys.

• Entities represent the main objects in the database (e.g. Customer, Product).

• Attributes are characteristics of entities (e.g. CustomerID, ProductName).

• Relationships show how entities are related to each other (e.g. one-to-many, many-to-many).

• Keys uniquely identify each record in a table (e.g. Primary Key, Foreign Key).

The task is to find the frequency of each digit or character in a given number or string and print each uniquely.

• Iterate through the number or string and count the frequency of each digit or character

• Store the frequencies in a map or dictionary

• Convert the map or dictionary into an array of strings with unique characters and their frequencies

I run automation Regression scripts using a test automation framework and scheduling tools.

• I organize regression scripts into test suites based on functionality

• I use a test automation framework like Selenium or Appium to execute the scripts

• I schedule the regression runs using tools like Jenkins or TeamCity

• I analyze the test results and report any failures for further investigation

Software testing is the process of evaluating a software application or system to identify defects or errors.

• Software testing is essential to ensure the quality and reliability of software.

• It involves executing test cases and comparing the actual results with expected results.

• Testing can be done manually or using automated tools.

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

• Examples of software testing tools include Selenium, JUnit, and Loa...read more

Answers to common interview questions for Software Test Engineer

• SQL is a programming language used to manage and manipulate relational databases.

• Update query is used to modify existing data in a database table.

• Types of software testing include functional, performance, and security testing.

• Unit testing is a type of testing where individual units or components of a software application are tested in isolation.

• Database testing involves testing the integrity, accuracy, and perfor...read more

Prod function testing is to verify the functionality of the software while GUI based testing is to test the user interface.

• Prod function testing checks the functionality of the software without considering the user interface

• GUI based testing checks the user interface of the software

• Prod function testing is usually done by developers while GUI based testing is done by testers

• Examples of Prod function testing include unit testing and integration testing

• Examples of GUI based tes...read more

findelement returns the first matching element on the page, find elements returns a list of all matching elements.

• findelement is used to locate a single element on a web page

• find elements is used to locate multiple elements on a web page

• findelement throws an exception if no matching element is found

• find elements returns an empty list if no matching elements are found

• Example: WebElement element = driver.findElement(By.id("exampleId"));

• Example: List elements = driver.findElemen...read more

Manual testing is done by humans without the use of automation tools, while automation testing involves using tools to execute test cases.

• Manual testing is time-consuming and prone to human error.

• Automation testing is faster and more reliable.

• Manual testing is suitable for exploratory testing, ad-hoc testing, and usability testing.

• Automation testing is ideal for regression testing, performance testing, and load testing.

• Manual testing requires human intervention for each test ...read more

HR stands for Human Resources. HR is responsible for managing employee relations, recruitment, training, and other personnel-related tasks.

• HR is used by organizations to manage their workforce and ensure compliance with labor laws.

• HR departments handle tasks such as recruitment, onboarding, training, performance evaluations, and employee relations.

• HR professionals also play a key role in developing and implementing company policies and procedures.

• Examples of HR functions incl...read more

System requirements are used to define the functionalities, constraints, and quality attributes of a software system.

• System requirements help in understanding what the software should do and how it should behave.

• They serve as a basis for design, development, testing, and validation of the software.

• Examples of system requirements include performance metrics, security features, user interface specifications, and compatibility with other systems.

Function overloading is having multiple functions with the same name but different parameters. Function overriding is redefining a base class function in a derived class.

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

• Function overriding involves redefining a base class function in a derived class with the same name and parameters.

• Example of function overloading: void print(int x) and void print(double y)

• Example of function overridin...read more

To ensure test case coverage, use techniques like requirement traceability, risk-based testing, code coverage analysis, and exploratory testing.

• Utilize requirement traceability to ensure all requirements have corresponding test cases

• Implement risk-based testing to prioritize testing efforts on high-risk areas

• Use code coverage analysis tools to identify areas of the code that are not covered by test cases

• Include exploratory testing to uncover unexpected issues and scenarios

• Reg...read more

Quality Assurance focuses on preventing defects, while Quality Control focuses on identifying defects.

• Quality Assurance is process oriented, focusing on improving processes to prevent defects.

• Quality Control is product oriented, focusing on identifying defects in the final product.

• Quality Assurance involves activities like process audits, training, and process improvement initiatives.

• Quality Control involves activities like testing, inspections, and reviews to identify defect...read more

Different types of views in Django include function-based views, class-based views, generic class-based views, and API views.

• Function-based views are simple functions that take a request and return a response.

• Class-based views are based on Python classes and provide more functionality and organization.

• Generic class-based views are pre-built views provided by Django for common use cases.

• API views are used for building RESTful APIs and typically return JSON responses.

An operating system is a software that manages computer hardware and software resources and provides common services for computer programs.

• An OS controls the allocation of resources like memory, CPU time, and disk space.

• It provides a user interface to interact with the computer.

• Examples of OS are Windows, macOS, Linux, Android, iOS.

• The OS kernel is the core component of an OS that manages hardware resources.

• The OS also provides security features like user authentication and a...read more

Singleton class is a design pattern that restricts the instantiation of a class to only one object.

• Singleton class ensures that a class has only one instance and provides a global point of access to it.

• It is often used in scenarios where only a single instance of a class is needed, such as for logging, database connections, or configuration settings.

• Example: Implementing a singleton class in Java involves creating a private static instance of the class and providing a public ...read more

STLC is a subset of SDLC that focuses on the testing phase of software development.

• STLC stands for Software Testing Life Cycle.

• SDLC stands for Software Development Life Cycle.

• STLC is a subset of SDLC that focuses on the testing phase of software development.

• SDLC encompasses all the phases of software development including requirements gathering, design, coding, testing, and maintenance.

• STLC includes activities like test planning, test design, test execution, and test closure....read more

Automation is more efficient than manual testing due to faster execution, repeatability, scalability, and coverage.

• Automation allows for faster execution of test cases compared to manual testing.

• Automated tests can be easily repeated multiple times without human error.

• Automation can be scaled to run tests on multiple configurations and environments simultaneously.

• Automated tests can cover a wider range of scenarios and edge cases compared to manual testing.

• Automation reduces ...read more

CAN protocols are used for communication between microcontrollers and devices in automotive systems. HIL testing involves simulating real-world conditions for testing hardware.

• CAN protocols are used for high-speed communication between electronic control units (ECUs) in vehicles.

• HIL testing, or Hardware-in-the-Loop testing, involves testing electronic control units (ECUs) in a simulated environment.

• HIL testing allows for testing of hardware components in a controlled environm...read more

Waits in Selenium are used to ensure that the automation script waits for a certain condition to be met before proceeding.

• 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: Waits for a condition with a specified frequency of checking.

• Thread.sleep(): Pauses the script execution for a specified amount of time.

Agile ceremonies are regular meetings or events in Agile methodology to facilitate communication and collaboration within the team.

• Sprint Planning: Plan the work to be done in the upcoming sprint.

• Daily Standup: Daily meeting to discuss progress, challenges, and plans for the day.

• Sprint Review: Demo of completed work to stakeholders for feedback.

• Sprint Retrospective: Reflect on the sprint and identify areas for improvement.

• Backlog Refinement: Review and prioritize items in the...read more

Low priority and high severity refer to the impact and urgency of a bug respectively.

• Low priority bugs are those that do not have a significant impact on the system or user experience, but still need to be fixed eventually.

• High severity bugs are those that have a significant impact on the system or user experience and need to be fixed urgently.

• For example, a low priority bug could be a typo in a non-critical error message, while a high severity bug could be a security vulnera...read more

Aggression is a behavior characterized by hostile or violent actions, while migration is the movement of individuals or groups from one place to another.

• Aggression is often associated with anger or frustration, and can be directed towards other individuals or objects.

• Migration can be voluntary or involuntary, and can be caused by factors such as environmental changes or economic opportunities.

• Examples of aggression include physical violence, verbal abuse, and intimidation tac...read more

To resolve project queries, communicate with stakeholders, analyze the query, identify the root cause, propose solutions, and collaborate with the team.

• Communicate with stakeholders to understand the query

• Analyze the query to identify the root cause

• Propose solutions or workarounds to resolve the query

• Collaborate with the team to implement the solution

• Ensure proper documentation and communication throughout the process

Constructor is used to initialize an object while method is used to perform a specific task.

• Constructor has the same name as the class while method has a unique name.

• Constructor is called automatically when an object is created while method is called explicitly.

• Constructor does not have a return type while method has a return type.

• Example of constructor: public MyClass() { // initialization code }

• Example of method: public int calculateSum(int a, int b) { return a + b; }

Smoke testing is a quick and shallow test to check if the software is stable enough for further testing. Sanity testing is a subset of regression testing to check if the bugs have been fixed and new changes have not affected the existing functionality.

• Smoke testing is performed to verify if the critical functionalities of the software are working fine.

• Sanity testing is performed to verify if the bugs have been fixed and new changes have not affected the existing functionality...read more

There are two types of waits available in Selenium: Implicit Wait and Explicit Wait.

• Implicit Wait: Waits for a certain amount of time before throwing a NoSuchElementException. It is set once and is applicable for the entire duration of the WebDriver object.

• Explicit Wait: Waits for a certain condition to be met before proceeding further in the code execution. It is more flexible and can be customized based on specific conditions.

Implement a function to check if an integer is a palindrome.

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

• Use modulo operator to extract digits from the integer and compare them

• Handle negative integers by returning false

• Handle single digit integers by returning true

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

• Defect is identified during testing or by users

• Defect is reported with detailed information

• Defect is assigned to a developer for fixing

• Developer fixes the defect and marks it as resolved

• Defect is retested to verify if it is fixed

• If the defect is not fixed, it is reopened

• Once verified, the defect is closed

Manual testing in Agile model involves continuous testing throughout the development cycle.

• Manual testing is integrated into the Agile development process

• Test cases are created and executed in each sprint

• Feedback is provided to the development team for quick resolution of issues

• Testers work closely with developers and other stakeholders

• Regression testing is performed regularly to ensure the stability of the product

• Examples: Exploratory testing, acceptance testing, usability t...read more

Software testing life cycle is a process that defines the various stages involved in testing a software application.

• Software testing life cycle consists of different phases such as requirement analysis, test planning, test design, test execution, and test closure.

• During the requirement analysis phase, the testing team reviews the requirements and identifies testable features.

• In the test planning phase, the test strategy, test plan, and test cases are prepared.

• Test design phas...read more

The syntax of inner join is used to combine rows from two or more tables based on a related column between them.

• Use the SELECT statement to specify the columns you want to retrieve from the tables.

• Use the INNER JOIN keyword followed by the table names and the ON keyword to specify the join condition.

• The join condition is typically a comparison between the related columns in the tables.

• Example: SELECT column1, column2 FROM table1 INNER JOIN table2 ON table1.column = table2.col...read more

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

• Java is platform-independent and can run on any operating system

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

• Java is known for its security features and is widely used in enterprise applications

• The Java compiler is the piiler of the Java programming language

Programming language is a set of instructions used to create software. OOPs is a programming paradigm based on objects.

• Programming language is used to write code that a computer can understand and execute.

• OOPs is a programming paradigm that focuses on objects and their interactions.

• OOPs concepts include encapsulation, inheritance, and polymorphism.

• Examples of programming languages include Java, Python, and C++.

Final is a keyword in Java used to declare constants, while finalize is a method in Java used for cleanup operations before an object is garbage collected.

• Final is used to declare constants in Java

• Finalize is a method in Java used for cleanup operations before garbage collection

• Final variables cannot be reassigned, while finalize method is called by the garbage collector

To extract data from an Excel sheet, you can use libraries like Apache POI or Openpyxl in Java or Python respectively.

• Use a library like Apache POI or Openpyxl to read Excel files

• Identify the sheet and cell range from which you want to extract data

• Iterate through the rows and columns to extract the desired data

• Store the extracted data in variables or data structures for further processing