Real questions from top companies · easy
What is Azure Data Factory (ADF), and what are its main components?
What is the role of the Integration Runtime (IR) in ADF?
Explain Common Table Expressions (CTEs) and their benefits.
Explain the difference between UNION and UNION ALL.
What is the difference between a clustered and non-clustered index?
What is the difference between DELETE and TRUNCATE?
What is a CTE (Common Table Expression)? What are its uses?
When would you architecturally choose Dataset[T] over DataFrame in a Scala Spark pipeline, and what are the scalability and portability trade-offs? Include type-safety benefits vs. operational constraints.
Write a Python function to find the first non-repeating character in a string.
What is the difference between Managed and External Tables in Databricks?
Explain the difference between a list and a tuple in Python.
How do you handle exceptions in Python? Provide an example.
What is the difference between shallow copy and deep copy in Python?
Write a Python function to find the first non-repeating character in a string.
What are decorators in Python, and how do they work?
Explain the difference between args and kwargs in Python.
What is the difference between a set and a list in Python?
How do you handle memory management in Python?
Write a Python function to find the maximum value in a list without using the built-in max() function.
Can you describe a situation where you had to work with a difficult stakeholder? How did you manage the situation and what was the outcome?
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