Question 1

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 2

Which Kubernetes resource is most commonly used to deploy a Spark application in a Cloudera environment?

Options :

A : Deployment

B : Pod

C : SparkApplication

D : ConfigMap

Answer: C

Question 3

Which Spark configuration parameter controls the size of shuffle partitions?

Options :

A : spark.sql.shuffle.partitions

B : spark.task.cpus

C : spark.driver.memory

D : spark.executor.memory

Answer: A

Question 4

What is a key method for improving join performance in Cloudera's Hadoop ecosystem?

Options :

A : Use hash joins

B : Increase cluster size

C : Use nested loops

D : Increase network bandwidth

Answer: A

Question 5

What is the purpose of the retry parameter in an Apache Airflow DAG task?

Options :

A : To determine task dependencies

B : To control the number of retries after a failure

C : To manage task scheduling

D : To define the task-s execution time

Answer: B

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