Hortonworks Hadoop-PR000007 Quiz 1 Topic 1 Questions 1-5

Question: 1

Given the following Hive command:

q1_Hadoop-PR000007

Which one of the following statements is true?

AThe files in the mydata folder are copied to a subfolder of /apps/hlve/warehouse

BThe files in the mydata folder are moved to a subfolder of /apps/hive/wa re house

CThe files in the mydata folder are copied into Hive's underlying relational database

DThe files in the mydata folder do not move from their current location In HDFS

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Question: 2

Which one of the following statements describes a Hive user-defined aggregate function?

AOperates on multiple input rows and creates a single row as output

BOperates on a single input row and produces a single row as output

COperates on a single input row and produces a table as output

DOperates on multiple input rows and produces a table as output

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Question: 3

In Hadoop 2.0, which TWO of the following processes work together to provide automatic failover of the NameNode? Choose 2 answers

AZKFailoverController

BZooKeeper

CQuorumManager

DJournalNode

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Question: 4

Which Two of the following statements are true about hdfs? Choose 2 answers

AAn HDFS file that is larger than dfs.block.size is split into blocks

BBlocks are replicated to multiple datanodes

CHDFS works best when storing a large number of relatively small files

DBlock sizes for all files must be the same size

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Question: 5

Examine the following Pig commands:

q5_Hadoop-PR000007

Which one of the following statements is true?

AThe SAMPLE command generates an 'unexpected symbol' error

BEach MapReduce task will terminate after executing for 0.2 minutes

CThe reducers will only output the first 20% of the data passed from the mappers

DA random sample of approximately 20% of the data will be output

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Hortonworks Hadoop-PR000007 Quiz:1 Topic:1 Questions:1-5