Hortonworks Hadoop-PR000007 HDPCD Exam Practice Test Instant Access

Question 1

Which one of the following files is required in every Oozie Workflow application?

Ajob.properties

BConfig-default.xml

CWorkflow.xml

DOozie.xml

Answer : C

Question 2

Which two of the following are true about this trivial Pig program' (choose Two)

AThe contents of myfile appear on stdout

BPig assumes the contents of myfile are comma delimited

CABC has a schema associated with it

Dmyfile is read from the user's home directory in HDFS

Answer : A, D

Question 3

Given the following Hive command:

INSERT OVERWRITE TABLE mytable SELECT * FROM myothertable;

Which one of the following statements is true?

AThe contents of myothertable are appended to mytable

BAny existing data in mytable will be overwritten

CA new table named mytable is created, and the contents of myothertable are copied into mytable

DThe statement is not a valid Hive command

Answer : B

Question 4

Examine the following Pig commands:

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

Answer : D

Question 5

To use a lava user-defined function (UDF) with Pig what must you do?

ADefine an alias to shorten the function name

BPass arguments to the constructor of UDFs implementation class

CRegister the JAR file containing the UDF

DPut the JAR file into the user's home folder in HDFS

Answer : C

Question 6

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

AThe ApplicationMaster starts the NodeManager in a Container

BThe NodeManager requests resources from the ApplicationMaster

CThe ApplicationMaster starts the NodeManager outside of a Container

DThe NodeManager creates an instance of the ApplicationMaster

Answer : D

Question 7

Which one of the following statements describes a Pig bag. tuple, and map, respectively?

AUnordered collection of maps, ordered collection of tuples, ordered set of key/value pairs

BUnordered collection of tuples, ordered set of fields, set of key value pairs

COrdered set of fields, ordered collection of tuples, ordered collection of maps

DOrdered collection of maps, ordered collection of bags, and unordered set of key/value pairs

Answer : B

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