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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.
Which of the following class provides access to configuration parameters?
Which of the following adds a configuration resource?
For running hadoop service daemons in Hadoop in secure mode ___________ principals are required.
The __________ provides a proxy between the web applications exported by an application and an end user.
___________ used by YARN framework which defines how any container launched and controlled.
The ____________ requires that paths including and leading up to the directories specified in yarn.nodemanager.local-dirs.
The configuration file must be owned by the user running _________
Data transfer between Web-console and clients are protected by using _________
___________ 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
