MapReduce Types and Formats

This set of MCQs helps students to learn about MapReduce types and formats in which Hadoop uses the MapReduce programming model for the data processing of input and output for the map and to reduce functions represented as key-value pairs. They are subject to parallel execution of datasets situated in a wide array of machines in a distributed architecture.

Start Quiz

HDFS supports the ____________ command to fetch Delegation Token and store it in a file on the local system.

fetdt fetchdt fsk rec

_________ command is used to copy file or directories recursively.

dtcp distcp dcp distc

__________ mode is a Namenode state in which it does not accept changes to the name space.

Recover Safe Rollback None of the mentioned

Which of the following is a common hadoop maintenance issue?

Lack of tools Lack of configuration management Lack of web interface None of the mentioned

___________ mode allows you to suppress alerts for a host, service, role, or even the entire cluster.

Safe Maintenance Secure All of the mentioned

Which of the following is a configuration management system?

Alex Puppet Acem None of the mentioned

Which of the following is a common reason to restart hadoop process?

Upgrade Hadoop React to incidents Remove worker nodes All of the mentioned

__________ Manager’s Service feature monitors dozens of service health and performance metrics about the services and role instances running on your cluster.

Microsoft Cloudera Amazon None of the mentioned

Which of the tab shows all the role instances that have been instantiated for this service?

Service Status Instance All of the mentioned

__________ is a standard Java API for monitoring and managing applications.

JVX JVM JMX None of the mentioned

Which hdfs command is used to check for various inconsistencies?

fsk

fsck

fetchdt

None of the mentioned

In ___________ mode, the NameNode will interactively prompt you at the command line about possible courses of action you can take to recover your data.

Full

Partial

Recovery

Commit

__________ command is used to interact and view Job Queue information in HDFS.

Queue

Priority

Dist

All of the mentioned

Which of the following is used for the MapReduce job Tracker node?

Mradmin

Tasktracker