Working of MapReduce

This set of MCQs helps students to learn about working of MapReduce which assigns fragments of data across the nodes in a Hadoop cluster. The goal is to split a dataset into chunks and use an algorithm to process those chunks at the same time. The parallel processing on multiple machines greatly increases the speed of handling even petabytes of data.

Start Quiz

Which of the following class provides access to configuration parameters?

Config Configuration OutputConfig None of the mentioned

Which of the following adds a configuration resource?

addDeprecation setDeprecatedProperties addDefaultResource addResource

For running hadoop service daemons in Hadoop in secure mode ___________ principals are required.

SSL Kerberos SSH None of the mentioned

The __________ provides a proxy between the web applications exported by an application and an end user.

ProxyServer WebAppProxy WebProxy None of the mentioned

___________ used by YARN framework which defines how any container launched and controlled.

Container ContainerExecutor Executor All of the mentioned

The ____________ requires that paths including and leading up to the directories specified in yarn.nodemanager.local-dirs.

TaskController LinuxTaskController LinuxController None of the mentioned

The configuration file must be owned by the user running _________

DataManager NodeManager ValidationManager None of the mentioned

Data transfer between Web-console and clients are protected by using _________

SSL Kerberos SSH None of the mentioned

___________ gives site-specific configuration for a given hadoop installation.

core-default.xml

core-site.xml

coredefault.xml

All of the mentioned

Administrators typically define parameters as final in __________ for values that user applications may not alter.

core-default.xml

core-site.xml

coredefault.xml

All of the mentioned

_________ method clears all keys from the configuration.

Clear

addResource

getClass

None of the mentioned

________ method adds the deprecated key to the global deprecation map.

addDeprecits

addDeprecation

keyDeprecation

None of the mentioned

________ checks whether the given key is deprecated.

isDeprecated

setDeprecated

isDeprecatedif

All of the mentioned

_________ is useful for iterating the properties when all deprecated properties for currently set properties need to be present.

addResource

setDeprecatedProperties

addDefaultResource

None of the mentioned

The simplest way to do authentication is using _________ command of Kerberos.

Auth

Kinit

Authorize

All of the mentioned

Quiz/Test Summary

Title: Working of MapReduce

Questions: 15

Contributed by:

Steve Thu, Apr 07, 2022 08:40 AM UTC

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