Hadoop Quiz Set #3

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Hadoop Quiz Set #3

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As compared to RDBMS, Hadoop?

Has higher data Integrity.

Does ACID transactions

IS suitable for read and write many times

Works better on unstructured and semi-structured data.

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HDFS can be accessed over HTTP using

viewfs URI scheme

webhdfs URI scheme

wasb URI scheme

HDFS ftp

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The inter process communication between different nodes in Hadoop uses

REST API

RPC

RMI

IP Exchange

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The comman used to copy a directory form one node to another in HDFS is

rcp

dcp

drcp

distcp

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Which technology is used to import and export data in Hadoop?

HBase

Avro

Sqoop

Zookeeper

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The property used to set the default filesystem for Hadoop in core-site.xml is-

filesystem.default

fs.default

fs.defaultFS

hdfs.default

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Which of the below property gets configured on hadoop-env.sh?

Replication factor

Directory names to store hdfs files

Host and port where MapReduce task runs

Java Environment variables.

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Which utility is used for checking the health of a HDFS file system?

fchk

fsck

fsch

fcks

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