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Free Hortonworks HDPCD Questions

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  Total 108 Questions
Question No 1

A NameNode in Hadoop 2.2 manages ______________.

Choose the Choices:

Two namespaces: an active namespace and a backup namespace

A single namespace

An arbitrary number of namespaces

No namespaces

B
Question No 2

Which Two of the following statements are true about hdfs? Choose 2 answers

Choose the Choices:

An HDFS file that is larger than dfs.block.size is split into blocks

Blocks are replicated to multiple datanodes

HDFS works best when storing a large number of relatively small files

Block sizes for all files must be the same size

A,B
Question No 3

In Hadoop 2.2, which one of the following statements is true about a standby NameNode? The Standby NameNode:

Choose the Choices:

Communicates directly with the active NameNode to maintain the state of the active NameNode.

Receives the same block reports as the active NameNode.

Runs on the same machine and shares the memory of the active NameNode.

Processes all client requests and block reports from the appropriate DataNodes. Answer: B
Question No 4

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

Choose the Choices:

hadoop scp X Y

hadoop fs - localPut X Y

hadoop fs - put X Y

hadoop fs - get X Y

C
Question No 5

What does the following WebHDFS command do? Curl - 1 - L “http://host:port/webhdfs/v1/foo/bar?op=OPEN”

Choose the Choices:

Make a directory /foo/bar

Read a file /foo/bar

List a directory /foo

Delete a directory /foo/bar

B
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