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Hortonworks HADOOP-PR000007 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Hadoop Ecosystem Integration | - HDFS interaction - Data ingestion and ETL workflows - MapReduce basics |
| Data Processing with Pig | - Advanced Pig processing
|
| Data Warehousing with Hive | - Advanced Hive features
|
Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) Sample Questions:
Review the following 'data' file and Pig code.
Which one of the following statements is true?
- A. The Output Of the DUMP D command IS (M,{(M,62.95102),(M,38,95111)})
- B. The output of the dump d command is (M, {(38,95in),(62,95i02)})
- C. The code executes successfully but there is not output because the D relation is empty
- D. The code does not execute successfully because D is not a valid relation
Correct Answer: A 🗳️
What does the following command do? register '/piggyban):/pig-files.jar';
- A. Invokes the user-defined functions contained in the jar file
- B. Assigns a name to a user-defined function or streaming command
- C. Transforms Pig user-defined functions into a format that Hive can accept
- D. Specifies the location of the JAR file containing the user-defined functions
Correct Answer: D 🗳️
Which describes how a client reads a file from HDFS?
- A. The client queries all DataNodes in parallel. The DataNode that contains the requested data responds
directly to the client. The client reads the data directly off the DataNode. - B. The client contacts the NameNode for the block location(s). The NameNode contacts the DataNode
that holds the requested data block. Data is transferred from the DataNode to the NameNode, and then
from the NameNode to the client. - C. The client contacts the NameNode for the block location(s). The NameNode then queries the
DataNodes for block locations. The DataNodes respond to the NameNode, and the NameNode redirects
the client to the DataNode that holds the requested data block(s). The client then reads the data directly
off the DataNode. - D. The client queries the NameNode for the block location(s). The NameNode returns the block location(s)
to the client. The client reads the data directory off the DataNode(s).
Correct Answer: D 🗳️
Which one of the following statements describes a Hive user-defined aggregate function?
- A. Operates on multiple input rows and produces a table as output
- B. Operates on a single input row and produces a single row as output
- C. Operates on multiple input rows and creates a single row as output
- D. Operates on a single input row and produces a table as output
Correct Answer: C 🗳️
Review the following data and Pig code.
M,38,95111 F,29,95060 F,45,95192 M,62,95102 F,56,95102
A = LOAD 'data' USING PigStorage('.') as (gender:Chararray, age:int,
zlp:chararray);
B = FOREACH A GENERATE age;
Which one of the following commands would save the results of B to a folder in hdfs named myoutput?
- A. DUMP B using PigStorage('myoutput');
- B. STORE B INTO 'myoutput';
- C. DUMP B INTO 'myoutput';
- D. STORE A INTO 'myoutput' USING PigStorage(',');
Correct Answer: B 🗳️
Louis 
Merlin 
Bernie 
Bart 
Poppy 
Cleveland 
Moore 
Kennedy 
Athena 
Bernard 
Randolph 
Vera 
Ashbur 
Zebulon 
Joseph 
Wilbur 
Yetta 
