Exponentia.ai Associate Data Engineer Interview Questions and Answers

Q1. Spark and airflow related questions
Add your answer
Q2. AWS services and it's related questions
Add your answer

Q1. NLP based question
Add your answer

Q1. Components of Databricks
Ans. 
Databricks is a unified data analytics platform that includes components like Databricks Workspace, Databricks Runtime, and Databricks Delta.
• Databricks Workspace: Collaborative environment for data science and engineering teams.

• Databricks Runtime: Optimized Apache Spark cluster for data processing.

• Databricks Delta: Unified data management system for data lakes.
Answered by AI
Add your answer
Q2. How to read a json file
Ans. 
To read a JSON file, use a programming language's built-in functions or libraries to parse the file and extract the data.
• Use a programming language like Python, Java, or JavaScript to read the JSON file.

• Import libraries like json in Python or json-simple in Java to parse the JSON data.

• Use functions like json.load() in Python to load the JSON file and convert it into a dictionary or object.

• Access the data in the JSON fi...read more
Answered by AI
Add your answer
Q3. Second highest salary SQL
Ans. 
To find the second highest salary in SQL, use the MAX function with a subquery or the LIMIT clause.
• Use the MAX function with a subquery to find the highest salary first, then use a WHERE clause to exclude it and find the second highest salary.

• Alternatively, use the LIMIT clause to select the second highest salary directly.

• Make sure to handle cases where there may be ties for the highest salary.
Answered by AI
Add your answer
Q4. How to configure the spark while creating the cluster
Ans. 
Spark cluster configuration involves setting up memory, cores, and other parameters for optimal performance.
• Specify the number of executors and executor memory

• Set the number of cores per executor

• Adjust the driver memory based on the application requirements

• Configure shuffle partitions for efficient data processing

• Enable dynamic allocation for better resource utilization
Answered by AI
Add your answer

I cannot recall the platform, but it featured a combination of Python and SQL questions, with the majority being focused on SQL.

Q1. SQL basics like Indexes, Clustering, Keys, Data warehousing concepts, Normalization and Denormalization etc..
Add your answer
Q2. SQL coding questions
Add your answer

Q1. SQL questions to solve using different types of joins
Add your answer
Q2. Questions based on project and data quality checks
Add your answer

Q1. Behavioral questions
Add your answer
Q2. Culture fit
Add your answer

MCQ SQL round coding easy questions

Q1. Resume based questions mostly on SQL, Python, Cloud basic to medium level
Add your answer

Q1. It was both mangerial and technical round similar to round 1 but more deep
Add your answer