Data Analyst Interview Questions
Databricks
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12 questions available
Statistics
Total
12
Easy
4
Medium
4
Hard
4
hard
6
Question: You have a Delta table that's frequently updated. You need to perform an analytical query that requires a consistent snapshot of the data. You use df = spark.read.table("my_delta_table"). Are you guaranteed to get a consistent snapshot? What are the alternatives to ensure consistency?
Delta Table
Scenario Based
easy
4
Question: What is a Databricks cluster?
Clusters
medium
2
Question: Thanos notices a long-running query against a Delta table in their Databricks SQL endpoint. The query plan suggests a full table scan. What Databricks-specific configurations or data organization techniques (beyond basic partitioning) should be investigated to improve query performance?
Streaming
Scenario Based
Delta Table
+1 morehard
2
Question: How would you use Databricks to collaborate with other analysts on a data analysis project?
Notebook
Scenario Based
medium
1
Question: A dataset loaded into a Databricks notebook seems to have incorrect date formatting when queried using SQL. How can Ronan leverage Databricks utilities or SQL functions within the notebook environment to efficiently correct the date format for analysis?
Notebook
hard
2
Question: Darkseid wants to quickly visualize the distribution of a categorical variable within a large Delta table directly within a Databricks notebook. What are the most efficient ways to achieve this without resorting to external visualization libraries or downloading the data?
Notebook
Delta Table
Scenario Based