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

1. Which HDFS command copies an HDFS file named foo to the local filesystem as localFoo?

A) hadoop fs -put foo LocalFoo
B) hadoop fs -Is foo
C) hadoop -cp foo LocalFoo
D) hadoop fs -get foo LocalFoo

2. A NameNode in Hadoop 2.0 manages ______________.

A) A single namespace
B) No namespaces
C) An arbitrary number of namespaces
D) Two namespaces: an active namespace and a backup namespace

3. You have a directory named jobdata in HDFS that contains four files: _first.txt, second.txt, .third.txt and
# data.txt. How many files will be processed by the FileInputFormat.setInputPaths () command when it's
given a path object representing this directory?

A) One, no special characters can prefix the name of an input file
B) Three, the pound sign is an invalid character for HDFS file names
C) Two, file names with a leading period or underscore are ignored
D) Four, all files will be processed
E) None, the directory cannot be named jobdata

4. You are developing a MapReduce job for sales reporting. The mapper will process input keys
representing the year (IntWritable) and input values representing product indentifies (Text).
Indentify what determines the data types used by the Mapper for a given job.

A) The InputFormat used by the job determines the mapper's input key and value types.
B) The mapper-specification.xml file submitted with the job determine the mapper's input key and value
types.
C) The data types specified in HADOOP_MAP_DATATYPES environment variable
D) The key and value types specified in the JobConf.setMapInputKeyClass and
JobConf.setMapInputValuesClass methods

5. Which project gives you a distributed, Scalable, data store that allows you random, realtime read/write
access to hundreds of terabytes of data?

A) Pig
B) Hue
C) HBase
D) Hive
E) Oozie
F) Flume
G) Sqoop

Solutions: