1) RDD partitions provide Spark the ability to split the work to parallelize computation on partitions across executors.

True or False

2) Select all the benefits of assigning data types when creating DataFrames.

A) Relieves Spark from the onus of inferring data types

B) Prevent Spark from creating a separate job just to read a large portion of your file to ascertain the schema, which for a large data file can be expensive and time-consuming

C) Allows to detect errors early if data doesn t match the schema

D) There is no advantage to assign schemas while creating DataFrames

3) An ______ is an immutable distributed collection of elements of your data, partitioned across nodes in your cluster.