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

1. Can you use MapReduce to perform a relational join on two large tables sharing a key? Assume that the
two tables are formatted as comma-separated files in HDFS.

A) No, but it can be done with either Pig or Hive.
B) Yes.
C) Yes, so long as both tables fit into memory.
D) No, MapReduce cannot perform relational operations.
E) Yes, but only if one of the tables fits into memory

2. Identify the MapReduce v2 (MRv2 / YARN) daemon responsible for launching application containers and
monitoring application resource usage?

A) NodeManager
B) JobTracker
C) ApplicationMasterService
D) ResourceManager
E) ApplicationMaster
F) TaskTracker

3. Which HDFS command uploads a local file X into an existing HDFS directory Y?

A) hadoop fs -localPut X Y
B) hadoop fs-put X Y
C) hadoop scp X Y
D) hadoop fs -get X Y

4. Examine the following Hive statements:

Assuming the statements above execute successfully, which one of the following statements is true?

A) The output is guaranteed to be a single file with all the data sorted by age
B) The SORT BY command causes only one reducer to be used
C) Each reducer generates a file sorted by age
D) The output of each reducer is only the age column

5. You want to Ingest log files Into HDFS, which tool would you use?

A) Ambari
B) Sqoop
C) Flume
D) HCatalog

Solutions: