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Hortonworks Data Platform Certified Developer Questions and Answers

Question 13

Which project gives you a distributed, Scalable, data store that allows you random, realtime read/write access to hundreds of terabytes of data?

HBase

Hue

Pig

Hive

Oozie

Flume

Sqoop

Question 14

To process input key-value pairs, your mapper needs to lead a 512 MB data file in memory. What is the best way to accomplish this?

Serialize the data file, insert in it the JobConf object, and read the data into memory in the configure method of the mapper.

Place the data file in the DistributedCache and read the data into memory in the map method of the mapper.

Place the data file in the DataCache and read the data into memory in the configure method of the mapper.

Place the data file in the DistributedCache and read the data into memory in the configure method of the mapper.

Question 15

For each intermediate key, each reducer task can emit:

As many final key-value pairs as desired. There are no restrictions on the types of those key-value pairs (i.e., they can be heterogeneous).

As many final key-value pairs as desired, but they must have the same type as the intermediate key-value pairs.

As many final key-value pairs as desired, as long as all the keys have the same type and all the values have the same type.

One final key-value pair per value associated with the key; no restrictions on the type.

One final key-value pair per key; no restrictions on the type.

Question 16

Which of the following tool was designed to import data from a relational database into HDFS?

HCatalog

Sqoop

Flume

Ambari