MPL Technologies ETL Test Engineer Interview Questions and Answers for Experienced

My framework is a hybrid framework that combines data-driven and keyword-driven approaches.

• The framework uses Excel sheets to store test data and keywords.

• It uses Selenium WebDriver for browser automation.

• It has a modular structure with reusable functions and libraries.

• It generates detailed HTML reports for test results.

• It supports parallel execution of tests.

• It has built-in exception handling and logging mechanisms.

Maven is a build automation tool used primarily for Java projects.

• Maven uses a Project Object Model (POM) to manage dependencies and build process

• It uses a central repository to download dependencies

• Maven has a defined directory structure for projects

• Plugins can be added to extend Maven's functionality

settings.xml is a configuration file used by Maven to customize its behavior.

• It contains information about the local repository location, proxy settings, and server credentials.

• It can be used to define profiles for different environments.

• It is located in the .m2 directory in the user's home directory.

• It can be overridden by using the -s or --settings command-line option.

To link TestNG file in Maven POM, add the TestNG dependency and plugin in POM.xml

• Add TestNG dependency in POM.xml

• Add TestNG plugin in POM.xml

• Configure TestNG plugin to run the TestNG XML file

• Example: org.testng testng 7.4.0 org.apache.maven.plugins maven-surefire-plugin 3.0.0-M5 testng.xml

Select class in Selenium is used to handle dropdowns and multi-select options on a web page.

• Syntax: Select select = new Select(driver.findElement(By.id("dropdownId")));

• Methods: selectByVisibleText(), selectByValue(), selectByIndex(), getOptions(), isMultiple(), getAllSelectedOptions(), deselectAll(), deselectByVisibleText(), deselectByValue(), deselectByIndex()

• Select class is used to handle dropdowns and multi-select o...read more

Jenkins is an open-source automation server used for continuous integration and delivery. It allows creating and managing jobs.

• Jenkins is a popular tool for automating software development processes.

• It provides a web-based interface for creating and managing jobs.

• Jobs in Jenkins are used to define tasks and workflows for building, testing, and deploying software.

• To create a job in Jenkins, navigate to the Jenkins dashb...read more

To point to any other branch in Jenkins, use the 'Branch specifier' field in the 'Source Code Management' section.

• In the Jenkins job configuration, go to the 'Source Code Management' section

• Select the appropriate SCM tool (e.g. Git, SVN)

• In the 'Branch specifier' field, enter the name of the branch you want to point to (e.g. 'develop', 'feature/xyz')

• Save the configuration and run the job

I don't have the available data to answer this question.

• N/A

Polymorphism is the ability of an object to take on many forms. It allows objects of different classes to be treated as if they were the same type.

• Polymorphism is achieved through method overriding and method overloading

• Example: A parent class Animal has a method called makeSound(). Child classes like Dog, Cat, and Cow can override this method to make their own unique sound.

• Another example is method overloading where a...read more

Abstraction is a way of hiding implementation details. An interface is a contract that specifies the behavior of a class.

• Abstraction is achieved through abstract classes and interfaces

• Abstract classes can have both abstract and non-abstract methods

• Interfaces can only have abstract methods and constants

• A class can implement multiple interfaces but can only inherit from one abstract class

• Abstract classes can have constru...read more

SQL query to delete duplicate records

• Use the DELETE statement with a subquery to identify and delete duplicate records

• The subquery should select the duplicate records based on the columns that define uniqueness

• Use the ROW_NUMBER() function to assign a unique number to each row, and delete rows with a number greater than 1

SQL query to get the 10th highest salary from employee table

• Use ORDER BY and LIMIT clauses

• Subquery can be used to get the 10th highest salary

A program to generate Fibonacci series.

• Declare two variables to store the first two numbers of the series

• Loop through the series and add the previous two numbers to get the next number

• Print the series or store it in an array

Program to remove duplicates from an array list

• Create a new empty array list

• Loop through the original array list

• If the element is not already in the new array list, add it

• Return the new array list

Collections are objects that group multiple elements into a single unit.

• Collections are used to store, retrieve, manipulate and communicate aggregate data.

• Types of collections include List, Set, Map, Queue, Stack, etc.

• Collections can be used to improve code readability, maintainability and performance.

• Example: ArrayList is a type of List collection that stores elements in an ordered sequence.

• Example: HashMap is a type ...read more

CSS selectors can be found using browser developer tools or by inspecting the HTML code.

• Use browser developer tools to inspect elements and find their CSS selectors

• Inspect the HTML code to find class or ID names that can be used as selectors

• Use CSS selector reference guides to learn about different types of selectors

• Experiment with different selectors to find the most efficient and specific one for your needs

Automation framework is a set of guidelines and standards for creating and maintaining automated tests.

• It provides a structure for organizing test code and data

• It defines the tools and technologies to be used for automation

• It helps in reducing maintenance efforts and increasing test coverage

• Examples include Selenium WebDriver, TestNG, and Cucumber

• Frameworks can be data-driven, keyword-driven, or hybrid

Implicit wait is a time delay applied globally in Selenium, while explicit wait is a time delay applied to a specific element.

• Implicit wait is used to wait for a certain amount of time before throwing an exception if the element is not found.

• Explicit wait is used to wait for a certain condition to occur before proceeding with the next step.

• Implicit wait is applied globally and is set once for the entire test script.

• Exp...read more

Defect life cycle refers to the stages a defect goes through from discovery to resolution.

• Defect is identified and logged

• Defect is assigned to a developer

• Developer fixes the defect

• Defect is retested by the tester

• If the defect is still present, it is reopened and assigned back to the developer

• If the defect is fixed, it is closed

Some popular automation tools are Selenium, Appium, TestComplete, UFT, and Robot Framework.

• Selenium is a widely used open-source tool for web automation testing.

• Appium is used for mobile automation testing on both Android and iOS platforms.

• TestComplete is a commercial tool for desktop, web, and mobile automation testing.

• UFT (formerly known as QTP) is a commercial tool for functional and regression testing.

• Robot Framewo...read more