Question 1

What configuration is essential for optimizing Spark performance on Kubernetes?

Options :

A : Kubernetes resource limits

B : Spark shuffle partitions

C : Spark application log levels

D : Kubernetes networking settings

Answer: A

Question 2

Which method allows you to debug a DAG in Apache Airflow?

Options :

A : By using the Airflow CLI

B : By restarting the Airflow server

C : By checking the Airflow Web UI logs

D : By editing the DAG file directly

Answer: C

Question 3

What does the catchup parameter control in an Apache Airflow DAG?

Options :

A : Whether tasks are retried on failure

B : The execution of tasks in parallel

C : The number of task retries

D : The scheduling of past missed runs

Answer: D

Question 4

What is a key feature of Airflow’s scheduler in handling ETL jobs?

Options :

A : Periodic scheduling

B : Real-time job execution

C : Immediate job execution

D : Manual job execution

Answer: A

Question 5

What is the impact of using custom operators in Airflow for data quality checks?

Options :

A : They handle task retries automatically

B : They allow for specialized quality check implementations

C : They simplify DAG creation

D : They improve scheduling efficiency

Answer: B

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