Free Cloudera CDP-4001 Exam Questions

Become Cloudera Certified with updated CDP-4001 exam questions and correct answers

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Total 300 Questions | Updated On: Jun 06, 2025

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Question 1

What is the purpose of using mapjoin in Hive queries?

A : perform joins in parallel

B : sort the data before joining

C : improve data compression during joins

D : optimize joins by loading small tables into memory

Answer: D

Question 2

Which function converts a string to an integer in Impala?

A : R_TO_INT

B : T

C : _INT

D : NVERT_TO_INT

Answer: B

Question 3

When would you use the COUNT(DISTINCT column_name) function in Apache Hive?

A : count all non-NULL values in a column

B : sum up the values in a column

C : count the total number of rows

D : count the number of unique values in a column

Answer: D

Question 4

What is the advantage of using INSERT OVERWRITE DIRECTORY over INSERT INTO in Hive?

A : appends results to the existing data.

B : overwrites existing data in the specified directory.

C : creates a backup of the query results.

D : creates a new table for results.

Answer: B

Question 5

How does HDFS handle data write operations?

A : ta is replicated after initial write

B : ta is written directly to DataNodes

C : ta is written to a central write buffer

D : ta is first written to the NameNode

Answer: B

Page: 1 / 60

Total 300 Questions | Updated On: Jun 06, 2025

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