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

1. Which one of the following statements describes a Pig bag. tuple, and map, respectively?

A) Ordered set of fields, ordered collection of tuples, ordered collection of maps
B) Unordered collection of maps, ordered collection of tuples, ordered set of key/value pairs
C) Ordered collection of maps, ordered collection of bags, and unordered set of key/value pairs
D) Unordered collection of tuples, ordered set of fields, set of key value pairs

2. 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) SequenceFileAsTextInputFormat
C) SequenceFileInputFormat
D) KeyValueFileInputFormat

3. What is a SequenceFile?

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

4. What are the TWO main components of the YARN ResourceManager process? Choose 2 answers

A) Job Tracker
B) Applications Manager
C) Scheduler
D) Task Tracker

5. On a cluster running MapReduce v1 (MRv1), a TaskTracker heartbeats into the JobTracker on your
cluster, and alerts the JobTracker it has an open map task slot.
What determines how the JobTracker assigns each map task to a TaskTracker?

A) The average system load on the TaskTracker node over the past fifteen (15) minutes.
B) The amount of RAM installed on the TaskTracker node.
C) The amount of free disk space on the TaskTracker node.
D) The location of the InsputSplit to be processed in relation to the location of the node.
E) The number and speed of CPU cores on the TaskTracker node.

Solutions: