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

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

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

2. 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

3. You need to create a job that does frequency analysis on input data. You will do this by writing a Mapper
that uses TextInputFormat and splits each value (a line of text from an input file) into individual characters.
For each one of these characters, you will emit the character as a key and an InputWritable as the value.
As this will produce proportionally more intermediate data than input data, which two resources should
you expect to be bottlenecks?

A) Processor and RAM
B) Processor and network I/O
C) Processor and disk I/O
D) Disk I/O and network I/O

4. In a MapReduce job with 500 map tasks, how many map task attempts will there be?

A) Exactly 500.
B) It depends on the number of reduces in the job.
C) At least 500.
D) At most 500.
E) Between 500 and 1000.

5. Which one of the following statements describes the relationship between the ResourceManager and the
ApplicationMaster?

A) The ResourceManager monitors and restarts any failed Containers of the ApplicationMaster
B) The ApplicationMaster starts an instance of the ResourceManager within each Container
C) The ApplicationMaster starts a single instance of the ResourceManager
D) The ApplicationMaster requests resources from the ResourceManager

Solutions: