KLA Senior Software Engineer Interview Questions and Answers

Q1. Invert bits of a number
Ans. 
Invert the bits of a given number
• Use bitwise XOR operator (^) with 1 to flip each bit

• Repeat the process for all bits in the number

• Return the inverted number
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Q2. How do you support backward compatibility whiel designing a system
Ans. 
Backward compatibility can be supported by using versioning, deprecation strategies, and maintaining clear communication with users.
• Use versioning to clearly distinguish between different versions of the system

• Implement deprecation strategies to phase out old features gradually

• Maintain clear communication with users about upcoming changes and provide migration paths

• Consider using compatibility layers or adapters to bri...read more
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Q1. Dsa questions , angular , .net core and SQL
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Major questions were around problem solving, strings

Q1. Reserve Binary Search Tree
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Q1. Selenium xpath and dynamic loading of elements
Ans. 
Selenium xpath is used to locate elements on a web page, especially useful for dynamic loading scenarios.
• Use xpath to locate elements based on their attributes or position on the page

• For dynamic loading, use explicit waits to ensure elements are present before interacting with them

• Consider using relative xpath expressions to make your tests more robust and maintainable
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Q2. Java programs on strings
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Q3. Test Ng architecture explain
Ans. 
TestNG is a testing framework inspired by JUnit and NUnit, with more advanced features for test automation.
• TestNG uses annotations to define test methods and test configurations.

• It supports parameterized tests, test dependencies, and test groups.

• TestNG allows parallel execution of tests, making it faster than other testing frameworks.

• It provides detailed test reports and supports data-driven testing.

• TestNG can be integ...read more
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Q1. Basic questions around testing.
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Here they asked lots of logical reasoning questions and checked on how you approached different situations

Q1. Explained package and other details
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1 easy, 1 medium and 1 hard LC

Q1. 1. How will access files in a different server? 2. There are several files all containing similar key value pairs. The values differ in all files. How will you identify all the values that are same and ot...read more
Ans. 
To access files in a different server, use protocols like FTP or SSH. To identify similar key value pairs in multiple files, compare values using a script or tool.
• Use FTP or SSH protocols to access files in a different server

• Write a script or use a tool to compare key value pairs in multiple files

• Identify values that are the same and different across files

• Example: Use Python script to read files and compare key value p
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Q1. Tell me about your Protect?
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Q2. Questions on C++
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Q1. Day to day tasks
Ans. 
Day to day tasks involve coding, debugging, testing, and collaborating with team members.
• Writing code for new features or fixing bugs

• Debugging and troubleshooting issues

• Testing code to ensure quality and functionality

• Collaborating with team members on projects

• Participating in code reviews and providing feedback
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Q2. Team management questions
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Q1. Salary negotiations
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Q2. Bahaviour questions
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