EPAM Systems Interview Questions, Process, and Tips

Q1. What is closure?
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Closure is a function that captures the environment in which it was created, allowing it to access variables from its outer scope even after the outer function has finished executing.
• Closure allows a function to access variables from its outer scope even after the outer function has finished executing.

• It 'closes over' the variables in its lexical scope, preserving their values.

• Closure is commonly used in event handlers...read more
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Q2. What is execution context?
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Execution context refers to the environment in which a piece of code is executed, including variables, scope, and this keyword.
• Execution context includes variables, scope chain, and the value of the this keyword.

• There are three types of execution contexts: global, function, and eval.

• Each function call creates a new execution context, which is pushed onto the call stack.

• Lexical environment and variable environment are p
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Q1. Java springboot questions
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Q2. Java stream questions
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Q1. Terraform related questions
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Q2. Kubernetes architecture
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Q1. Generic Discussion with recruiter and some basic questionnaire on location details, my work culture, my roles and responsibilities, interview process, my current and expected CTC, company culture and its p...read more
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Q1. Write a program to check if a string or integer is palindrome or not? write the output For a Given multiple inheritance program? write the output for a given method overriding program?
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Programs to check palindrome and output for multiple inheritance and method overriding
• Palindrome program can be implemented using string or integer reversal and comparison

• Output for multiple inheritance program depends on the specific implementation

• Output for method overriding program depends on the specific implementation
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Q2. OOPS Concepts : what is abstraction? what is encapsulation? How do you achieve abstraction in python? what are private and protected access specifiers ?
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Abstraction and encapsulation are OOPS concepts. Achieving abstraction in Python is through abstract classes and interfaces. Private and protected access specifiers restrict access to class members.
• Abstraction is the process of hiding implementation details and showing only the necessary information to the user.

• Encapsulation is the process of wrapping data and methods into a single unit and restricting access to them f...read more
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Q3. What is generator ? what are the advantages of generators over iterators? what is lambda function? give an example? what is the difference between list and tuple?
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Questions on Python concepts - generators, iterators, lambda functions, lists, and tuples.
• Generators are functions that return an iterator and can be paused and resumed. They save memory and improve performance.

• Iterators are objects that can be iterated upon and return data one at a time. They are less memory-efficient than generators.

• Lambda functions are anonymous functions that can take any number of arguments and re...read more
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Q4. What is implicit wait and explicit wait ? write a xpath for a given element on a page? what are the different exceptions in selenium? How will you handle multiple windows in Selenium? what is stale element...read more
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Explaining implicit and explicit waits, handling multiple windows and exceptions in Selenium
• Implicit wait: Wait for a certain amount of time before throwing an exception if the element is not found

• Explicit wait: Wait for a certain condition to be met before proceeding with the next step

• XPath example: //input[@id='username']

• Exceptions in Selenium: NoSuchElementException, TimeoutException, ElementNotVisibleException, Sta...read more
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Q5. How do you post a request in API automation? How do you get its response? How do you perform authentication in API automation? what is page object model?
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To post a request in API automation, we use tools like Postman or RestAssured. Authentication is performed using tokens or API keys. Page Object Model is a design pattern used in automation testing.
• To post a request, we need to specify the endpoint URL, request method, headers, and body parameters.

• We can use tools like Postman or RestAssured to post requests and get responses.

• Authentication can be performed using token...read more
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Q6. What are fixtures in pytest? what are markers in pytest? what is the robotframework architecture? How do you write a test case in robotframework? how do you generate reports in robotframework
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Answers to questions related to pytest and robotframework
• Fixtures in pytest are functions that provide a fixed baseline for tests to run on

• Markers in pytest are used to mark tests with metadata such as priority or category

• Robotframework architecture consists of test libraries, test cases, and keywords

• Test cases in robotframework are written in a tabular format using keywords and arguments

• Reports in robotframework can b...read more
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Q7. Difference between get fetch and git pull? what is git stash? What is git rebase? Tell the branching flow in your project? what is your Software model ? Explain your day to day activities and your sprint c...read more
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Questions related to Git, software model, Docker, and CI/CD for Senior QA Automation Engineer position.
• get fetch retrieves changes from the remote repository without merging them into the local branch

• git pull retrieves changes from the remote repository and merges them into the local branch

• git stash temporarily saves changes that are not ready to be committed

• git rebase integrates changes from one branch into another by...read more
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Q8. What Is The SQL Query Used To Find The 2nd Highest rated movie? what are joins in SQL? Difference between inner join and outer join? WHat is self join?
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SQL query to find the 2nd highest rated movie and explanation of joins and self join.
• To find the 2nd highest rated movie, use the following SQL query: SELECT TOP 1 rating FROM (SELECT DISTINCT TOP 2 rating FROM movies ORDER BY rating DESC) ORDER BY rating ASC

• Joins are used to combine data from two or more tables based on a related column.

• Inner join returns only the matching rows from both tables, while outer join retur...read more
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Q9. How do you give all rwx permissions to a file ? How do you search for a specific text in a file ?
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To give all rwx permissions to a file, use chmod 777 filename. To search for specific text in a file, use grep 'text' filename.
• To give all rwx permissions to a file, use the chmod command followed by 777 and the filename.

• Example: chmod 777 myfile.txt

• To search for specific text in a file, use the grep command followed by the text and the filename.

• Example: grep 'hello' myfile.txt
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Q10. What is smoke testing, sanity testing and regression testing? what is bug life cycle? what is traceability matrix?
Ans. 
Smoke testing, sanity testing and regression testing are types of software testing. Bug life cycle is the process of a bug from discovery to resolution. Traceability matrix is a document that links requirements to test cases.
• Smoke testing is a quick test to check if the basic functionalities of the software are working after a new build.

• Sanity testing is a quick test to check if the major functionalities of the softwar...read more
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Q1. What is the difference between testing and quality assurance?
Ans. 
Testing is the process of identifying defects while quality assurance is the process of preventing defects.
• Testing is a reactive process while quality assurance is a proactive process.

• Testing is focused on finding defects while quality assurance is focused on preventing defects.

• Testing is a subset of quality assurance.

• Quality assurance involves the entire software development process while testing is limited to the tes...read more
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Q2. What is smoke testing ? what is regression testing?
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Smoke testing is a quick and shallow test to ensure the basic functionality of an application. Regression testing is a comprehensive test to ensure that changes made to the application do not affect its existing functionality.
• Smoke testing is performed after a new build is received and before regression testing.

• Smoke testing is a subset of regression testing.

• Regression testing is performed after changes are made to the...read more
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Q3. What is CI/CD? Xtreme Programming and Kanban
Ans. 
CI/CD is a software development approach that emphasizes continuous integration, testing, and delivery.
• CI/CD stands for Continuous Integration/Continuous Delivery

• It involves automating the software development process to ensure that code changes are frequently and consistently tested and deployed

• Xtreme Programming (XP) is an Agile software development methodology that emphasizes teamwork, communication, and feedback

• Kan...read more
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Q4. What are the challenges you've faced so far and how did u try to resolve them?
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As a Senior QA Automation Engineer, I have faced various challenges and have successfully resolved them.
• One challenge I faced was ensuring compatibility across different browsers and devices. I resolved this by implementing a robust cross-browser testing strategy using tools like Selenium Grid and BrowserStack.

• Another challenge was dealing with complex test scenarios and data dependencies. To overcome this, I developed...read more
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Q5. What have you learnt from your failures?
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I have learned the importance of thorough testing, communication, and continuous improvement from my failures.
• Thorough testing: I have learned that skipping or rushing through testing can lead to overlooked bugs and issues.

• Communication: I have learned the importance of clear and effective communication with team members and stakeholders to ensure everyone is on the same page and expectations are aligned.

• Continuous imp...read more
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Q1. Why do you want to switch your current job?
Ans. 
I am seeking new challenges and opportunities for growth in my career.
• Looking for a more challenging role

• Seeking opportunities for professional development

• Wanting to work with new technologies or tools

• Desire for a better work-life balance

• Seeking a more supportive or collaborative work environment
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Q2. What role you're looking for? what are your expectations from EPAM?
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I am looking for the role of Senior QA Automation Engineer and my expectations from EPAM are...
• I am looking for a challenging role where I can utilize my skills and experience in QA automation

• I expect EPAM to provide a supportive and collaborative work environment

• I hope to work on cutting-edge technologies and projects

• I am looking for opportunities for professional growth and advancement

• I expect EPAM to value work-life...read more
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Q3. About Company's Culture
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