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Microsoft Implementing Data Engineering Solutions Using Azure Databricks Sample Questions:

1. Hotspot Question
You have an Azure Databricks workspace that contains an all-purpose cluster named Cluster1.
You discover that out-of-memory (OOM) errors intermittently cause jobs running on Cluster1 to fail.
You need to identify the root cause of the failures by analyzing the runtime execution behavior.
What should you do? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

2. Which tool is best for continuous ingestion of files landing in Azure Data Lake?

A) Databricks Jobs
B) Auto Loader
C) Azure Data Factory Copy Activity
D) Azure Logic Apps

3. You have an Azure Databricks workspace that contains a Delta table named Table1.
Table1 has accumulated obsolete files.
You need to reduce storage costs. The solution must preserve 30 days of time travel history.
Which two actions should you perform? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.

A) Set the delta.deletedFileRetentionDuration table property to 30 days.
B) Reduce the deleted file retention period to one day.
C) Run the OPTIMIZE command on Table1.
D) Set the delta.logRetentionDuration table property to 30 days.
E) Run the vacuum command on Table1.

4. Hotspot Question
You have an Azure Databricks workspace.
You have an Azure key vault named kv-secure that stores a secret named storageKey. The value of storageKey is managed and updated by the cloud security team at your company.
You need to enable a Databricks notebook named Notebook1 to retrieve the value of storageKey securely at runtime. The solution must follow the principle of least privilege and always retrieve the latest value.
What should you do? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

5. You have an Azure Databricks workspace named Workspace1.
You create a compute cluster named Cluster1 that will be used to ingest data.
You need to install the required libraries on Cluster1. The solution must use Unity Catalog for access control.
What should you do?

A) Upload the libraries to Workspace1 and install the libraries on Cluster1.
B) Create a custom dependency management script and run the script from a Databricks notebook.
C) Install the libraries on Cluster1 and manually restart the cluster.
D) Install the libraries by using pip3.

Solutions: