Simulacro examen Associate

Which of the following operations can execute a SQLquery on a table?

• spark.query()

• DataFrame.sql()

• spark.sql()

• DataFrame.createOrReplaceTempView()

• DataFrame.createTempView()

Which of the following statements about the Sparkdriver is incorrect?

• The Spark driver is the node in which the Spark application'smain method runs to coordinate the Spark application.

• The Spark driver is horizontally scaled to increaseoverall processing throughput.

• The Spark driver contains the SparkContext object.

• The Spark driver is responsible for scheduling theexecution of data by various worker nodes in cluster mode.

Which of the following statements about slots is true? (Slots = Cores)

• There must be more slots than executors.

• There must be more tasks than slots.

• Slots are resources for parallelization within a Sparkapplication

• Slots are resources for parallelization within a Sparkapplication.

Which of the following is a combination of a blockof data and a set of transformers that will run on a single executor?

• Executor

• Node

• Job

• Task

Which of the following is a group of tasks that can be executed in parallel to compute the same set of operations on potentially multiple machines?

• Job

• Slot

• Executor

• Stage

Which of the following describes a shuffle?

• A shuffle is the process by which data is compared across partitions.

• A shuffle is the proccess by which data is compared across executors

• A shuffle is the process by with tasks are ordered for execution.

Which of the following operations will trigger evaluation?

• DataFrame.filter()

• DataFrame.distinct()

• DataFrame.join()

• DataFrame.count()

Which of the following data structures are Spark DataFramesbuilt on top of?

• Arrays

• Strings

• RDDs

• Vectors