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databricks CERTIFIED_ASSOCIATE_DEVELOPER_FOR_APACHE_SPARK

Exam contains 187 questions

Page 1 of 32

Question 1 🔥

Which of the following describes the Spark driver?

Which database solution meets these requirements?

A. The Spark driver is responsible for performing all execution in all execution modes – it is the entire Spark application.

Highly voted

B. The Spare driver is fault tolerant – if it fails, it will recover the entire Spark application.

Highly voted

C. The Spark driver is the coarsest level of the Spark execution hierarchy – it is synonymous with the Spark application.

Highly voted

D. The Spark driver is the program space in which the Spark application’s main method runs coordinating the Spark entire application.

Highly voted

E. The Spark driver is horizontally scaled to increase overall processing throughput of a Spark application.

Highly voted

Discussion of the question

Question 2 🔥

The default value of spark.sql.shuffle.partitions is 200. Which of the following describes what that means?

Which database solution meets these requirements?

A. By default, all DataFrames in Spark will be spit to perfectly fill the memory of 200 executors.

Highly voted

B. By default, new DataFrames created by Spark will be split to perfectly fill the memory of 200 executors.

Highly voted

C. By default, Spark will only read the first 200 partitions of DataFrames to improve speed.

Highly voted

D. By default, all DataFrames in Spark, including existing DataFrames, will be split into 200 unique segments for parallelization.

Highly voted

E. By default, DataFrames will be split into 200 unique partitions when data is being shuffled.

Highly voted

Discussion of the question

Question 3 🔥

Which of the following describes the relationship between nodes and executors?

Which database solution meets these requirements?

A. Executors and nodes are not related.

Highly voted

B. Anode is a processing engine running on an executor.

Highly voted

C. An executor is a processing engine running on a node.

Highly voted

D. There are always the same number of executors and nodes.

Highly voted

E. There are always more nodes than executors.

Highly voted

Discussion of the question

Question 4 🔥

Which of the following statements about Spark jobs is incorrect?

Which database solution meets these requirements?

A. Jobs are broken down into stages.

Highly voted

B. There are multiple tasks within a single job when a DataFrame has more than one partition.

Highly voted

C. Jobs are collections of tasks that are divided up based on when an action is called.

Highly voted

D. There is no way to monitor the progress of a job.

Highly voted

E. Jobs are collections of tasks that are divided based on when language variables are defined.

Highly voted

Discussion of the question

Question 5 🔥

Which of the following will occur if there are more slots than there are tasks?

Which database solution meets these requirements?

A. The Spark job will likely not run as efficiently as possible.

Highly voted

B. The Spark application will fail – there must be at least as many tasks as there are slots.

Highly voted

C. Some executors will shut down and allocate all slots on larger executors first.

Highly voted

D. More tasks will be automatically generated to ensure all slots are being used.

Highly voted

E. The Spark job will use just one single slot to perform all tasks.

Highly voted

Discussion of the question

Question 6 🔥

Which of the following is the most complete description of lazy evaluation?

Which database solution meets these requirements?

A. None of these options describe lazy evaluation

Highly voted

B. A process is lazily evaluated if its execution does not start until it is put into action by some type of trigger

Highly voted

C. A process is lazily evaluated if its execution does not start until it is forced to display a result to the user

Highly voted

D. A process is lazily evaluated if its execution does not start until it reaches a specified date and time

Highly voted

E. A process is lazily evaluated if its execution does not start until it is finished compiling

Highly voted

Discussion of the question

Ready to Pass Your Certification Test

databricks CERTIFIED_ASSOCIATE_DEVELOPER_FOR_APACHE_SPARK

Exam contains 187 questions

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