Real questions from top companies
What is the purpose of the Bronze, Silver, and Gold layers in a data pipeline?
What work is done by the executor memory in Spark?
When and how do you use Broadcast Join?
Why is SparkSession used in Spark 2.0 and later versions?
Write a Python script to find the count of each word in a text file using Spark.
Write the PySpark code to find the second highest salary in each department.
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.
Write a Python function to check if a string is a palindrome.
What is the difference between a set and a list in Python?
How do you handle memory management in Python?
What is the difference between a generator and a list in Python?
Write a Python function to find the maximum value in a list without using the built-in max() function.
Briefly introduce yourself and walk us through your journey as a Data Engineer so far.
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?
Describe a time when you had to work with a team to solve a complex problem. What was your role, and how did the team approach the problem?
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