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

1. Indentify which best defines a SequenceFile?

A) A SequenceFile contains a binary encoding of an arbitrary number key-value pairs. Each key must be
the same type. Each value must be the same type.
B) A SequenceFile contains a binary encoding of an arbitrary number of heterogeneous Writable objects
C) A SequenceFile contains a binary encoding of an arbitrary number of homogeneous Writable objects
D) A SequenceFile contains a binary encoding of an arbitrary number of WritableComparable objects, in
sorted order.

2. Which one of the following is NOT a valid Oozie action?

A) mapreduce
B) mrunit
C) pig
D) hive

3. 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, {(38,95in),(62,95i02)})
B) The code executes successfully but there is not output because the D relation is empty
C) The code does not execute successfully because D is not a valid relation
D) The Output Of the DUMP D command IS (M,{(M,62.95102),(M,38,95111)})

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

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

5. Assuming the following Hive query executes successfully:

Which one of the following statements describes the result set?

A) An 80-value ngram of sentences that contain the words "you" or "are" in the lines column of the
inputdata table.
B) A bigram of the top 80 sentences that contain the substring "you are" in the lines column of the input
data A1 table.
C) A trigram of the top 80 sentences that contain "you are" followed by a null space in the lines column of
the inputdata table.
D) A frequency distribution of the top 80 words that follow the subsequence "you are" in the lines column
of the inputdata table.

Solutions: