Question 1

How does HDFS handle data write operations?

Options :

A : Data is replicated after initial write

B : Data is written directly to DataNodes

C : Data is written to a central write buffer

D : Data is first written to the NameNode

Answer: B

Question 2

How can you enforce data security policies at the file level in HDFS using Apache Ranger?

Options :

A : By configuring HDFS policies in Cloudera Manager

B : By configuring HDFS policies in HDFS Admin

C : By configuring HDFS policies in Atlas Admin

D : By configuring HDFS policies in Ranger Admin

Answer: D

Question 3

What is the purpose of using the INSERT OVERWRITE statement in Hive?

Options :

A : To delete data from a table

B : To create a new table

C : To append data to an existing table

D : To update existing records

Answer: C

Question 4

Which command is used to invalidate metadata in Impala when changes are made to underlying data files in Cloudera?

Options :

A : REFRESH

B : LOAD DATA INPATH

C : ALTER TABLE

D : INVALIDATE METADATA

Answer: D

Question 5

Which function is used to cast a column to a different data type in Impala?

Options :

A : TRANSFORM

B : CHANGE

C : CAST

D : CONVERT

Answer: C

Higher Test Marks with Free Online CDP-4001 Exam Practice