HDPCD無料問題集「Hortonworks Data Platform Certified Developer」

質問 1

What are the TWO main components of the YARN ResourceManager process? Choose 2 answers

（A）Scheduler

（B）Job Tracker

（C）Applications Manager

（D）Task Tracker

正解：A、C 解答を投票する

質問 2

Consider the following two relations, A and B.

What is the output of the following Pig commands?
X = GROUP A BY S1; DUMP X;

（A）Option D

（B）Option B

（C）Option C

（D）Option A

正解：A 解答を投票する

質問 3

Examine the following Hive statements:

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

（A）The output of each reducer is only the age column

（B）The output is guaranteed to be a single file with all the data sorted by age

（C）The SORT BY command causes only one reducer to be used

（D）Each reducer generates a file sorted by age

正解：D 解答を投票する

質問 4

Given the following Hive command:

Which one of the following statements is true?

（A）The files in the mydata folder are moved to a subfolder of /apps/hive/wa re house

（B）The files in the mydata folder are copied to a subfolder of /apps/hlve/warehouse

（C）The files in the mydata folder do not move from their current location In HDFS

（D）The files in the mydata folder are copied into Hive's underlying relational database

正解：C 解答を投票する

質問 5

Which HDFS command uploads a local file X into an existing HDFS directory Y?

（A）hadoop fs -get X Y

（B）hadoop fs -localPut X Y

（C）hadoop fs-put X Y

（D）hadoop scp X Y

正解：C 解答を投票する

質問 6

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

正解：F 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 7

A NameNode in Hadoop 2.2 manages ______________.

（A）Two namespaces: an active namespace and a backup namespace

（B）No namespaces

（C）An arbitrary number of namespaces

（D）A single namespace

正解：D 解答を投票する

質問 8

In Hadoop 2.2, which TWO of the following processes work together to provide automatic failover of the NameNode? Choose 2 answers

（A）QuorumManager

（B）ZooKeeper

（C）JournalNode

（D）ZKFailoverController

正解：C、D 解答を投票する

質問 9

The Hadoop framework provides a mechanism for coping with machine issues such as faulty configuration or impending hardware failure. MapReduce detects that one or a number of machines are performing poorly and starts more copies of a map or reduce task. All the tasks run simultaneously and the task finish first are used. This is called:

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 10

You are developing a combiner that takes as input Text keys, IntWritable values, and emits Text keys, IntWritable values. Which interface should your class implement?

（A）Reducer <Text, IntWritable, Text, IntWritable>

（B）Combiner <Text, Text, IntWritable, IntWritable>

（C）Mapper <Text, IntWritable, Text, IntWritable>

（D）Combiner <Text, IntWritable, Text, IntWritable>

（E）Reducer <Text, Text, IntWritable, IntWritable>

正解：A 解答を投票する

HDPCD 無料問題集「Hortonworks Data Platform Certified Developer」

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