10+ GIRDHARI LAL CONSTRUCTIONS Interview Questions and Answers

Interview questions for QA Engineer

• Reverse a string using StringBuilder or StringBuffer

• Find second highest number by sorting the array and accessing the second last element

• String is immutable while StringBuffer is mutable

• HashMap stores key-value pairs while HashSet stores only keys

• Instance variables are declared inside a class while local variables are declared inside a method

• Primitive data types are int, float, double, etc. while non-primitive data types are arrays, classes,...read more

Slow scrolling in Selenium can be caused by various factors like large DOM, inefficient locators, or network latency.

• Check if the page has a large DOM structure which can slow down scrolling

• Optimize locators to make them more efficient and reduce the time taken to find elements

• Consider network latency as a possible cause for slow scrolling

• Use actions class in Selenium for smooth scrolling operations

Handling multiple windows in Selenium involves switching between windows and performing actions on each window.

• Use getWindowHandles() to get all window handles

• Switch to a specific window using switchTo().window(handle)

• Perform actions on the window

• Switch back to the original window if needed

Test automation framework consists of different parts like libraries, tools, and utilities.

• Libraries: reusable code modules for common functions

• Tools: software used for test automation like Selenium, Appium

• Utilities: additional resources for test automation like data generators, loggers

Bug cycle in Agile refers to the process of identifying, reporting, fixing, and verifying bugs during the development cycle.

• Bug cycle involves identifying bugs through testing

• Bugs are reported to the development team

• Developers fix the bugs

• QA engineers verify the fixes

• This cycle continues until all bugs are resolved

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 changes

• Automated tools can be used to streamline the process

• Can be time-consuming but is essential for maintaining software quality

Automation testing is faster, more reliable, and scalable compared to manual testing.

• Automation testing is faster as it can execute tests much quicker than manual testing.

• Automation testing is more reliable as it eliminates human errors and ensures consistent test results.

• Automation testing is scalable as it can run tests on multiple configurations and environments simultaneously.

• Manual testing is better suited for exploratory testing and usability testing where human judgmen...read more

Use Java Stream API to sort HashMap by values.

• Use entrySet() method to get a set view of the mappings contained in the map.

• Use Comparator.comparing() to compare the values of the entries.

• Use sorted() method to sort the entries based on the comparator.

• Collect the sorted entries into a LinkedHashMap to maintain the order.

Selenium Architecture is a framework that consists of different components like Selenium IDE, WebDriver, and Selenium Grid.

• Selenium IDE: Record and playback tool for creating test scripts

• WebDriver: API for writing test scripts in various programming languages

• Selenium Grid: Distributes test execution across multiple machines for parallel testing

Synchronization in Selenium ensures that the automation script waits for the web page to load completely before performing actions.

• Selenium provides implicit, explicit, and fluent wait for synchronization.

• Implicit wait sets a default waiting time for the elements to be found.

• Explicit wait allows the script to wait for a certain condition to occur before proceeding.

• Fluent wait is a more flexible way of waiting for elements based on specific conditions.

• Example: driver.manage()....read more

Test scenarios for payment processing

• Verify payment is processed successfully with valid credit card information

• Test payment failure scenarios such as incorrect CVV, expired card, insufficient funds

• Check for proper error messages displayed to the user in case of payment failure

• Test payment processing speed under different network conditions

• Verify payment confirmation email is sent to the user after successful transaction

Xpath is a way to locate elements on a web page using their XML path.

• Xpath stands for XML Path Language.

• It is used in Selenium to locate elements on a web page.

• Xpath can be used to navigate through the elements and attributes in an XML document.

• There are two types of Xpath: Absolute and Relative.

• Example: //input[@id='username'] - locates an input element with id 'username'.

SDLC stands for Software Development Life Cycle, a process used by software development teams to design, develop, and test high-quality software.

• SDLC is a structured process that consists of several phases including planning, analysis, design, implementation, testing, and maintenance.

• Each phase has its own set of activities and deliverables that contribute to the overall success of the software project.

• Examples of SDLC models include Waterfall, Agile, and DevOps, each with it...read more

STLC stands for Software Testing Life Cycle, which is a systematic approach to testing software.

• STLC involves planning, designing, executing, and reporting on tests throughout the software development lifecycle.

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

• Each phase has specific objectives and deliverables to ensure the quality of the software product.

• STLC helps in identifying defects early in the development proce...read more

Various tools are used in the project for testing purposes.

• Selenium for automated testing

• JIRA for bug tracking

• Postman for API testing

OOPS (Object-Oriented Programming) is a programming paradigm based on the concept of objects, which can contain data and code.

• OOPS focuses on creating objects that interact with each other to solve problems

• Key principles include encapsulation, inheritance, polymorphism, and abstraction

• Encapsulation involves bundling data and methods that operate on the data into a single unit

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

• Polymorphism enables o...read more