Question 1

When is it beneficial to turn off schema inference in a Spark job?

Options :

A : When using a predefined schema to improve performance

B : When you need to perform data validation

C : When working with small datasets

D : When automatic type detection is needed

Answer: A

Question 2

When is it beneficial to turn off schema inference in a Spark job?

Options :

A : When using a predefined schema to improve performance

B : When you need to perform data validation

C : When working with small datasets

D : When automatic type detection is needed

Answer: A

Question 3

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 4

How can you filter rows in a Spark DataFrame based on a condition?

Options :

A : orderBy()

B : groupBy()

C : filter()

D : select()

Answer: C

Question 5

When is it beneficial to turn off schema inference in a Spark job?

Options :

A : When using a predefined schema to improve performance

B : When you need to perform data validation

C : When working with small datasets

D : When automatic type detection is needed

Answer: A