Leapwork India Senior Automation Engineer Interview Questions and Answers

Q1. About previous projects
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Q1. Based on your skill sets mentioned in your Resume
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Q1. Based on your skilllsets
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Q1. Discussion on salary
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Building selection system using best practices in C# dot net, SOLID principle, Design Patterns.
It was above average difficult question and time was less. But they were ok to give more time to complete the system. lasted around 4 hours

Asked questions about previous experience and my aptitude. they were keep to know if I am ok to work in fast pace environment. lasted around 40 mins.

Q1. What are you current roles , responsibilities?
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Q2. Experience and projects that you did?
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Q3. What did you know about Epam Anywhere?
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Epam Anywhere is a platform that connects remote tech professionals with global companies for project-based work.
• Epam Anywhere is a platform created by Epam Systems, a global IT services company.

• It allows remote tech professionals to work on project-based assignments for global companies.

• Professionals can choose projects based on their skills and availability.

• Companies can access a pool of talented professionals from a...read more
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Q4. Do you have any other questions?
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Q1. Difference between git merge and git rebase?
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Git merge combines changes from different branches, while git rebase moves the current branch to the tip of another branch.
• Git merge creates a new commit with the combined changes of the branches being merged.

• Git rebase moves the current branch to the tip of another branch by replaying each commit on top of the other branch.

• Git merge preserves the commit history of both branches, while git rebase rewrites the commit hi
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Q2. How to set up version control system?
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Setting up a version control system involves choosing a system, creating a repository, adding files, committing changes, and collaborating with team members.
• Choose a version control system like Git, SVN, or Mercurial.

• Create a repository to store your project files.

• Add files to the repository using commands like 'git add' or 'svn add'.

• Commit changes to the repository with a message describing the changes using commands ...read more
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Q3. What is difference between Working tree, staging/index and HEAD?
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Working tree, staging/index, and HEAD are different states in Git representing different versions of files.
• Working tree is the current state of files in the project directory

• Staging/index is the area where changes are prepared to be committed

• HEAD points to the last commit on the current branch
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Q4. What are Authentication mechanism that you are aware of?
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Various authentication mechanisms include password-based, biometric, multi-factor, and OAuth.
• Password-based authentication

• Biometric authentication (e.g. fingerprint, facial recognition)

• Multi-factor authentication (e.g. SMS code, token generator)

• OAuth (Open Authorization) for third-party authentication
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Q5. What is BDD? what difference between BDD and cucumber? Are you aware of specflow?
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BDD stands for Behavior Driven Development. Cucumber is a BDD tool that uses Gherkin syntax. SpecFlow is a BDD tool for .NET.
• BDD (Behavior Driven Development) is a software development approach that focuses on the behavior of the system.

• Cucumber is a BDD tool that uses Gherkin syntax to write test scenarios in a human-readable format.

• SpecFlow is a BDD tool specifically designed for .NET projects, allowing developers to...read more
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Q6. What is UpCasting? and why we can't use downCasting in OOPS?
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Upcasting is casting a subclass object to a superclass reference. Downcasting is the opposite.
• Upcasting is safe and implicit in OOP, as it involves casting a subclass object to a superclass reference.

• Downcasting is not safe and requires explicit casting, as it involves casting a superclass reference to a subclass object.

• Example: Animal animal = new Dog(); // Upcasting

• Example: Dog dog = (Dog) animal; // Downcasting, req
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Q7. Which one is recommended between HashTable and HashMap?
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HashMap is recommended due to better performance and allows null values, while HashTable is synchronized.
• HashMap is not synchronized, so it is faster than HashTable for single-threaded applications.

• HashMap allows null values and null keys, while HashTable does not.

• HashMap is part of the Java Collections Framework, while HashTable is a legacy class.

• Example: HashMap map = new HashMap<>();

• Example: HashTab
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Q8. Explain about your Automation project architecture?
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Q9. What are five basic items to jumpstart API Automation?
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Five basic items to jumpstart API Automation
• Understand the API documentation

• Select a suitable automation tool (e.g. Postman, SoapUI)

• Set up a testing environment

• Write test cases for API endpoints

• Implement continuous integration for automated testing
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Q10. How to run the TCs in parallel?
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Running test cases in parallel can be achieved by using tools like TestNG or JUnit.
• Use TestNG or JUnit to create test suites that can run test cases in parallel

• Configure the test suite to run test cases concurrently by setting the parallel attribute in the testng.xml file

• Ensure that the test cases are independent of each other to avoid any conflicts during parallel execution
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Q11. Serialization & Deserialization?
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Q12. What are log levels and what log library do you use in your project?
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Log levels are used to categorize log messages based on their severity. Common levels include DEBUG, INFO, WARN, ERROR, and FATAL.
• Log levels help in filtering and managing log messages based on their importance and severity.

• Different log levels include DEBUG, INFO, WARN, ERROR, and FATAL, each indicating the severity of the message.

• Log libraries like Log4j, Logback, and SLF4J are commonly used in projects to handle log...read more
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Q13. What are the design patterns that you are aware of?
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Some common design patterns include Singleton, Factory, Observer, and Strategy patterns.
• Singleton pattern ensures a class has only one instance and provides a global point of access to it.

• Factory pattern creates objects without specifying the exact class of object that will be created.

• Observer pattern defines a one-to-many dependency between objects so that when one object changes state, all its dependents are notified...read more
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Q14. Can you explain SOLID principles?
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SOLID principles are a set of five design principles that help make software designs more understandable, flexible, and maintainable.
• Single Responsibility Principle (SRP) - A class should have only one reason to change.

• Open/Closed Principle (OCP) - Software entities should be open for extension but closed for modification.

• Liskov Substitution Principle (LSP) - Objects of a superclass should be replaceable with objects o...read more
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Q15. What are types of testing that you are aware of?
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Types of testing include functional testing, non-functional testing, manual testing, automated testing, regression testing, and performance testing.
• Functional testing: Testing the functionality of the software against the requirements.

• Non-functional testing: Testing aspects like performance, usability, and security.

• Manual testing: Testing performed manually by testers without the use of automation tools.

• Automated testi...read more
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Q16. Use only LinQ expressions? Given List lst=new List{"adfa","agdasg"}; How do you filter names that start with "a"?
Ans. 
Filter names starting with 'a' using LinQ expressions on a List.
• Use LinQ Where method with a lambda expression to filter names starting with 'a'.

• Example: var filteredNames = lst.Where(name => name.StartsWith('a')).ToArray();
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Q17. What is jenkins? Do you have experience in setting up pipeline in jenkins? Are you aware of how to setup pipeline job in jenkins?
Ans. 
Jenkins is a popular open-source automation server used for continuous integration and continuous delivery of software projects.
• Jenkins is used to automate the non-human part of the software development process, with continuous integration and facilitating technical aspects of continuous delivery.

• It allows for easy configuration of pipelines to automate the build, test, and deployment processes.

• Setting up a pipeline in...read more
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Q1. Write piece of code? How to create interface, Abstract class? Create a new class which implements interface and Abstract class? If there is common method exist in interface & Abstract class
Ans. 
Creating interface, abstract class, and implementing them in a new class with a common method
• To create an interface in Java, use the 'interface' keyword and define the methods without implementation

• To create an abstract class in Java, use the 'abstract' keyword before the class definition and can have both abstract and concrete methods

• To implement an interface in a class, use the 'implements' keyword and provide implem...read more
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Q2. How to override any method in child class?
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To override a method in a child class, use the 'override' keyword in the child class method definition.
• Use the 'override' keyword before the method signature in the child class.

• The method in the child class must have the same name, return type, and parameters as the method in the parent class.

• The overridden method in the child class can call the parent class method using 'base.MethodName()'.
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Q3. String str="My name is xyz and i am from abc organization"; Create a dictionary as output which stores the words as key and frequency as values?
Ans. 
Create a dictionary to store word frequency from a given string.
• Split the string into words using space as delimiter

• Iterate through the words and update the frequency in the dictionary

• Handle case sensitivity and punctuation marks appropriately
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Q4. Difference between .Select and .SelectMany
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Select projects a sequence of values into a new form, while SelectMany projects each element of a sequence to a sequence and flattens the resulting sequences into one sequence.
• Select is used to transform each element of a sequence into a new form.

• SelectMany is used to transform each element of a sequence into a sequence of values and then flattens those sequences into one sequence.

• SelectMany is often used when working ...read more
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Q5. List lst={"name1","name2","name3"}; Use only Linq expression and create dictionary which stores element in the above list as key and length of the element as value
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Use Linq to create a dictionary with elements from a list as keys and their lengths as values.
• Use ToDictionary method with element as key and element length as value

• Use Select method to project each element to a KeyValuePair
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Q6. Attributes used in Nunit and for Parallel execution?
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Attributes used in Nunit for parallel execution include Parallelizable and MaxDegreeOfParallelism.
• Parallelizable attribute is used to specify that a test fixture can be run in parallel with others

• MaxDegreeOfParallelism attribute is used to specify the maximum number of threads to use for parallel execution
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Q7. How to handle stale element exception?
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Stale element exception occurs when an element is no longer attached to the DOM.
• Refresh the page and try to locate the element again

• Use explicit wait to ensure the element is present and interactable before performing actions

• Handle the exception using try-catch block to retry the operation

• Avoid storing web elements in variables for a long time as they may become stale
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Medium leetcode question related to dp.

LLD round to create a cache library

Q1. Design Paytm like system
Ans. 
Design a system similar to Paytm for online payments and transactions.
• Implement user authentication and authorization for secure transactions

• Develop a user-friendly interface for easy navigation and transactions

• Integrate various payment options like credit/debit cards, net banking, UPI, and wallets

• Implement a robust backend system to handle transactions and store user data securely
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Q2. Design Url Shortner
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Design a URL shortener service to generate short URLs for long URLs.
• Use a unique identifier for each long URL to generate a short URL.

• Implement a mapping system to map short URLs to long URLs.

• Consider implementing features like custom short URLs, expiration dates, and analytics.

• Ensure the short URLs are unique and not easily guessable.

• Optimize the service for performance and scalability.
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Q1. Basic beaviour question.
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Q2. Design Notification Service.
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Design a Notification Service for sending alerts to users.
• Define types of notifications (email, SMS, push notifications)

• Implement a system for users to subscribe/unsubscribe from notifications

• Include a scheduling system for sending notifications at specific times

• Consider implementing a notification history for users to view past alerts
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1h, HackRank, 3 algo problem

Q1. It was in English. He ask me about company, my experience and my wishes.
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Q1. Logical and algo question
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SQL Questions based on subqueries.

Q1. Java basics and coding question.
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