Question 1

Which of the following are key components of a data governance strategy?

Options :

A : Data access and usage policies

B : Data ownership and stewardship

C : Data encryption only

D : Data quality and accuracy standards

Answer: A,B,D

Question 2

Which technique can optimize PySpark performance for large datasets?

Options :

A : Increasing the number of shuffle partitions

B : Using broadcast joins

C : Reducing executor memory

D : Disabling caching

Answer: B

Question 3

Which of the following is the most important consideration for ensuring data privacy in a cloud-based system?

Options :

A : Using unlimited data storage in the cloud

B : Storing data in a public cloud environment

C : Implementing strong encryption and access control measures

D : Allowing unrestricted data access by all users

Answer: C

Question 4

Which of the following statements about Spark's `reduceByKey()` transformation is correct?

Options :

A : It maps values to new key-value pairs

B : It filters data based on a given condition

C : It reduces data by performing an aggregation on key-value pairs

D : It splits data into multiple partitions

Answer: C

Question 5

Which feature of Azure Data Factory helps to monitor and manage long-running data pipelines?

Options :

A : Pipeline Monitoring

B : Error Handling

C : Azure Monitor

D : Data Flow Debugging

Answer: A

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