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在談到 HADOOP-PR000007 最新考古題，很難忽視的是可靠性。我們是一個為考生提供準確的考試材料的專業網站，擁有多年的培訓經驗，Hortonworks HADOOP-PR000007 題庫資料是個值得信賴的產品，我們的IT精英團隊不斷為廣大考生提供最新版的 Hortonworks HADOOP-PR000007 認證考試培訓資料，我們的工作人員作出了巨大努力，以確保考生在 HADOOP-PR000007 考試中總是取得好成績，可以肯定的是，Hortonworks HADOOP-PR000007 學習指南是為你提供最實際的認證考試資料，值得信賴。

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最新的 HDP Certified Developer HADOOP-PR000007 免費考試真題:

1. Which best describes how TextInputFormat processes input files and line breaks?

A) Input file splits may cross line breaks. A line that crosses file splits is read by the RecordReader of the
split that contains the beginning of the broken line.
B) Input file splits may cross line breaks. A line that crosses file splits is read by the RecordReaders of
both splits containing the broken line.
C) The input file is split exactly at the line breaks, so each RecordReader will read a series of complete
lines.
D) Input file splits may cross line breaks. A line that crosses file splits is read by the RecordReader of the
split that contains the end of the broken line.
E) Input file splits may cross line breaks. A line that crosses file splits is ignored.

2. You have written a Mapper which invokes the following five calls to the OutputColletor.collect method:
output.collect (new Text ("Apple"), new Text ("Red") ) ;
output.collect (new Text ("Banana"), new Text ("Yellow") ) ;
output.collect (new Text ("Apple"), new Text ("Yellow") ) ;
output.collect (new Text ("Cherry"), new Text ("Red") ) ;
output.collect (new Text ("Apple"), new Text ("Green") ) ;
How many times will the Reducer's reduce method be invoked?

A) 0
B) 1
C) 6
D) 3
E) 5

3. Which describes how a client reads a file from HDFS?

A) The client contacts the NameNode for the block location(s). The NameNode then queries the
DataNodes for block locations. The DataNodes respond to the NameNode, and the NameNode redirects
the client to the DataNode that holds the requested data block(s). The client then reads the data directly
off the DataNode.
B) The client queries the NameNode for the block location(s). The NameNode returns the block location(s)
to the client. The client reads the data directory off the DataNode(s).
C) The client queries all DataNodes in parallel. The DataNode that contains the requested data responds
directly to the client. The client reads the data directly off the DataNode.
D) The client contacts the NameNode for the block location(s). The NameNode contacts the DataNode
that holds the requested data block. Data is transferred from the DataNode to the NameNode, and then
from the NameNode to the client.

4. In a large MapReduce job with m mappers and n reducers, how many distinct copy operations will there
be in the sort/shuffle phase?

A) m
B) n
C) mXn (i.e., m multiplied by n)
D) mn (i.e., m to the power of n)
E) m+n (i.e., m plus n)

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

A) The NodeManager creates an instance of the ApplicationMaster
B) The ApplicationMaster starts the NodeManager in a Container
C) The NodeManager requests resources from the ApplicationMaster
D) The ApplicationMaster starts the NodeManager outside of a Container

問題與答案：