Hortonworks Hadoop-PR000007 HDPCD Exam Questions Instant Access

Question 1

Given the following Hive command:

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

Answer : D

Question 2

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

Answer : A, B

Question 3

Which one of the following is NOT a valid Oozie action?

Amapreduce

Bpig

Chive

Dmrunit

Answer : D

Question 4

Examine the following Hive statements:

Assuming the statements above execute successfully, which one of the following statements is true?

AEach reducer generates a file sorted by age

BThe SORT BY command causes only one reducer to be used

CThe output of each reducer is only the age column

DThe output is guaranteed to be a single file with all the data sorted by age

Answer : A

Question 5

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 6

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 7

What does the following WebHDFS command do?

Curl -1 -L ''http://host:port/webhdfs/v1/foo/bar?op=OPEN''

AMake a directory /foo/bar

BRead a file /foo/bar

CList a directory /foo

DDelete a directory /foo/bar

Answer : B

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