Hortonworks Hadoop-PR000007 HDPCD Exam Practice Test Instant Access

Question 1

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

AThe ApplicationMaster requests resources from the ResourceManager

BThe ApplicationMaster starts a single instance of the ResourceManager

CThe ResourceManager monitors and restarts any failed Containers of the ApplicationMaster

DThe ApplicationMaster starts an instance of the ResourceManager within each Container

Answer : A

Question 2

Review the following data and Pig code:

What command to define B would produce the output (M,62,95l02) when invoking the DUMP operator on B?

AB = FILTER A BY (zip = = '95102' AND gender = = M');

BB= FOREACH A BY (gender = = 'M' AND zip = = '95102');

CB = JOIN A BY (gender = = 'M' AND zip = = '95102');

DB= GROUP A BY (zip = = '95102' AND gender = = 'M');

Answer : A

Question 3

Which Hadoop component is responsible for managing the distributed file system metadata?

ANameNode

BMetanode

CDataNode

DNameSpaceManager

Answer : A

Question 4

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

Answer : A

Question 5

Given the following Pig commands:

Which one of the following statements is true?

AThe $1 variable represents the first column of data in 'my.log'

BThe $1 variable represents the second column of data in 'my.log'

CThe severe relation is not valid

DThe grouped relation is not valid

Answer : B

Question 6

Consider the following two relations, A and B .

A2 Jim Chris 2
3 Terry 3
4 Brian 4

B2 cherry
2 cherry
3 orange
4 peach

C2 cherry Jim, Chris
3 orange Terry
4 peach Brian

D2 cherry Jim 2
2 cherry Chris 2
3 orange Terry 3
4 peach Brian 4

Answer : D

Question 7

Consider the following two relations, A and B.

What is the output of the following Pig commands?

X = GROUP A BY S1;

DUMP X;

AOption

BOption

COption

DOption

Answer : D

Hortonworks Hadoop-PR000007 Hortonworks-Certified-Apache-Hadoop-2.0-Developer(Pig and Hive Developer) HDPCD Exam Practice Test