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Hortonworks Hadoop 2.0 Certification exam for Pig and Hive Developer Sample Questions:

1. Which HDFS command displays the contents of the file x in the user's HDFS home directory?

A) hadoop fs -Is x
B) hadoop fs -cat x
C) hdfs fs -get x
D) hadoop fs -cp x

2. Which one of the following statements is false about HCatalog?

A) Provides a shared schema mechanism
B) Designed to be used by other programs such as Pig, Hive and MapReduce
C) Stores HDFS data in a database for performing SQL-like ad-hoc queries
D) Exists as a subproject of Hive

3. You are developing a combiner that takes as input Text keys, IntWritable values, and emits Text keys, IntWritable values. Which interface should your class implement?

A) Reducer <Text, Text, IntWritable, IntWritable>
B) Mapper <Text, IntWritable, Text, IntWritable>
C) Reducer <Text, IntWritable, Text, IntWritable>
D) Combiner <Text, IntWritable, Text, IntWritable>
E) Combiner <Text, Text, IntWritable, IntWritable>

4. A NameNode in Hadoop 2.0 manages ______________.

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

5. Indentify the utility that allows you to create and run MapReduce jobs with any executable
or script as the mapper and/or the reducer?

A) Hadoop Streaming
B) mapred
C) Sqoop
D) Flume
E) Oozie

Solutions: