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

1. You need to perform statistical analysis in your MapReduce job and would like to call methods in the
Apache Commons Math library, which is distributed as a 1.3 megabyte Java archive (JAR) file. Which is
the best way to make this library available to your MapReducer job at runtime?

A) Have your system administrator copy the JAR to all nodes in the cluster and set its location in the
HADOOP_CLASSPATH environment variable before you submit your job.
B) When submitting the job on the command line, specify the -libjars option followed by the JAR file path.
C) Have your system administrator place the JAR file on a Web server accessible to all cluster nodes and
then set the HTTP_JAR_URL environment variable to its location.
D) Package your code and the Apache Commands Math library into a zip file named JobJar.zip

2. What types of algorithms are difficult to express in MapReduce v1 (MRv1)?

A) Algorithms that require applying the same mathematical function to large numbers of individual binary
records.
B) Text analysis algorithms on large collections of unstructured text (e.g, Web crawls).
C) Relational operations on large amounts of structured and semi-structured data.
D) Algorithms that require global, sharing states.
E) Large-scale graph algorithms that require one-step link traversal.

3. Which one of the following statements describes the relationship between the NodeManager and the
ApplicationMaster?

A) The ApplicationMaster starts the NodeManager outside of a Container
B) The ApplicationMaster starts the NodeManager in a Container
C) The NodeManager requests resources from the ApplicationMaster
D) The NodeManager creates an instance of the ApplicationMaster

4. Which YARN component is responsible for monitoring the success or failure of a Container?

A) NodeManager
B) ResourceManager
C) JobTracker
D) ApplicationMaster

5. Consider the following two relations, A and B.

What is the output of the following Pig commands?
X = GROUP A BY S1; DUMP X;

A) Option B
B) Option D
C) Option C
D) Option A

Solutions: