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Hortonworks HADOOP-PR000007 Exam Syllabus Topics:

Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) Sample Questions:

Question 1

In Hadoop 2.0, which one of the following statements is true about a standby NameNode?
The Standby NameNode:

A. Communicates directly with the active NameNode to maintain the state of the active NameNode.
B. Runs on the same machine and shares the memory of the active NameNode.
C. Receives the same block reports as the active NameNode.
D. Processes all client requests and block reports from the appropriate DataNodes.

Question 2

Which one of the following Hive commands uses an HCatalog table named x?

A. SELECT x.-FROM org.apache.hcatalog.hive.HCatLoader('x');
B. Hive commands cannot reference an HCatalog table
C. SELECT * FROM org.apache.hcatalog.hive.HCatLoader('x');
D. SELECT * FROM x;

Question 3

You need to create a job that does frequency analysis on input data. You will do this by writing a Mapper
that uses TextInputFormat and splits each value (a line of text from an input file) into individual characters.
For each one of these characters, you will emit the character as a key and an InputWritable as the value.
As this will produce proportionally more intermediate data than input data, which two resources should
you expect to be bottlenecks?

A. Processor and RAM
B. Disk I/O and network I/O
C. Processor and network I/O
D. Processor and disk I/O

Question 4

Which one of the following classes would a Pig command use to store data in a table defined in
HCatalog?

A. No special class is needed for a Pig script to store data in an HCatalog table
B. org.apache.hcatalog.pig.HCatOutputFormat
C. org.apache.hcatalog.pig.HCatStorer
D. Pig scripts cannot use an HCatalog table

Question 5

Given a directory of files with the following structure:
line number, tab character, string:
Example:
1 abialkjfjkaoasdfjksdlkjhqweroij
2 kadfjhuwqounahagtnbvaswslmnbfgy
3 kjfteiomndscxeqalkzhtopedkfsikj
You want to send each line as one record to your Mapper. Which InputFormat should you use to complete
the line: conf.setInputFormat (____.class) ; ?

A. BDBInputFormat
B. KeyValueFileInputFormat
C. SequenceFileInputFormat
D. SequenceFileAsTextInputFormat

Solutions: