20+ Medhaj Techno Concept Interview Questions and Answers

Answering questions related to software testing and related concepts.

• Software testing is the process of evaluating a software application to ensure it meets the specified requirements and functions correctly.

• It is required to identify defects or bugs in the software and ensure its quality and reliability.

• Different types of manual testing include functional testing, usability testing, performance testing, etc.

• Test cases for a dustbin could include checking if it opens and clos...read more

API testing is a type of software testing that involves testing APIs directly and ensuring they meet functional and performance requirements.

• API testing involves testing the functionality, reliability, performance, and security of APIs

• It can be done manually or using automated tools

• API testing can be done at different levels such as unit, integration, and end-to-end testing

• Examples of API testing tools include Postman, SoapUI, and JMeter

APIs (Application Programming Interfaces) allow different software applications to communicate with each other by defining a set of rules and protocols.

• APIs work by receiving requests from a client, processing them, and returning a response.

• API status codes indicate the outcome of the request, such as 200 for successful response, 404 for not found, and 500 for server error.

• Common API status codes include 200 (OK), 201 (Created), 400 (Bad Request), 401 (Unauthorized), 403 (For...read more

Count the number of palindrome words in a given string.

• Split the string into words using space as a delimiter.

• Iterate through each word and check if it is a palindrome.

• Increment the count if the word is a palindrome.

JSON payload for POST request with nested object

• Use curly braces to define the object

• Use colon to separate key-value pairs

• Use double quotes for keys and values

Retesting is testing the same functionality again to ensure the defect is fixed, while regression testing is testing the entire application to ensure new changes do not impact existing functionality.

• Retesting focuses on confirming a specific defect fix, while regression testing focuses on ensuring no new defects are introduced.

• Retesting is usually done by the tester who found the defect, while regression testing can be done by any tester.

• Retesting is a subset of regression te...read more

Fundamentals of testing involve understanding the purpose of testing, test planning, test design, test execution, and test closure.

• Understanding the purpose of testing - why are we testing and what are we trying to achieve?

• Test planning - creating a strategy for how testing will be conducted

• Test design - creating test cases and test scenarios based on requirements

• Test execution - running the tests and analyzing the results

• Test closure - evaluating the testing process and docu...read more

To move to a child window in Selenium, we need to switch to the window using window handles.

• Get the window handle of the parent window using driver.getWindowHandle()

• Get all the window handles using driver.getWindowHandles()

• Switch to the child window using driver.switchTo().window(childWindowHandle)

• Perform actions on the child window

• Switch back to the parent window using driver.switchTo().window(parentWindowHandle)

Playwright Configuration file manages settings for browser automation tests.

• Manages browser settings such as viewport size and user agent

• Controls the behavior of the browser during tests

• Can specify test environment configurations like headless mode or slow network conditions

String Buffer is synchronized and thread-safe, while String Builder is not synchronized and faster.

• String Buffer is synchronized, making it thread-safe for use in multi-threaded environments.

• String Builder is not synchronized, making it faster but not thread-safe.

• String Buffer is slower than String Builder due to synchronization overhead.

• Use String Buffer when thread safety is needed, and String Builder for better performance.

Reverse a string while keeping special characters in place

• Iterate through the string and store special characters in a separate array

• Reverse the string excluding special characters

• Insert special characters back into their original positions

Selenium is a widely used open-source automation tool for web applications, while Playwright is a newer automation tool developed by Microsoft with more modern features.

• Selenium is older and more established, with a larger community and more resources available.

• Playwright is more modern and has features like cross-browser testing, parallel execution, and better support for modern web technologies.

• Selenium uses WebDriver protocol, while Playwright has its own protocol for auto...read more

To find the maximum salary from the table and individual department in SQL.

• Use the MAX() function in SQL to find the maximum salary from the table.

• To find the maximum salary for each department, use the GROUP BY clause along with the MAX() function.

• You can also use the ORDER BY clause to sort the results in descending order and limit the output to only show the highest salary.

Testing methodologies include various types of testing such as API testing and test scenarios.

• Testing methodologies are the different approaches and techniques used to test software applications.

• API testing involves testing the application programming interface to ensure it meets the requirements and specifications.

• Test scenarios are a set of steps or conditions that are used to test a specific feature or functionality of the software.

• Other types of testing methodologies incl...read more

I have used interfaces in my project to achieve abstraction and decoupling of components.

• Used interfaces to define a contract for classes to implement

• Implemented interfaces to provide a common set of methods for different classes

• Utilized interfaces to enable polymorphism and dependency injection

API works by allowing different software applications to communicate with each other through a set of rules and protocols.

• API stands for Application Programming Interface

• APIs define the methods and data formats that applications can use to request and exchange information

• APIs can be used to access data from a remote server, integrate with third-party services, or automate tasks

• Examples of APIs include Google Maps API for accessing map data, Twitter API for posting tweets, and...read more

Regression testing ensures existing functionality still works after changes, while sanity testing checks for major issues before full testing.

• Regression testing is performed to ensure that previously working functionality still works after changes or updates.

• Sanity testing is a cursory testing to check for major issues before full testing is conducted.

• Regression testing is typically automated and covers a wide range of test cases.

• Sanity testing is usually done manually and fo...read more

Zero sprint is a concept in Agile methodology where no new features are developed, focusing on bug fixes, refactoring, and technical debt.

• Zero sprint is a dedicated sprint where the team focuses on improving the quality of the existing codebase.

• During a zero sprint, no new features are added to the product.

• The team may work on bug fixes, refactoring, improving test coverage, addressing technical debt, and enhancing the overall quality of the software.

• Zero sprint helps in stab...read more