Hadoop and NoSQL Quiz

Which of the following is not a Hadoop ecosystem component?

• HDFS

• Hive

• Spark

• MySQL

What is the main function of the NameNode in Hadoop?

• Processing data

• Storing block data

• Managing metadata and file system namespace

• Managing MapReduce tasks

Which scheduler allows each job to get a fair share of cluster resources?

• FIFO

• Capacity Scheduler

• Fair Scheduler

• YARN Scheduler

Which of the following is true about YARN?

• It replaces HDFS

• It improves NameNode high availability

• It manages cluster resources and job scheduling

• It is part of the HiveQL language

What does MRv2 stand for in Hadoop 2.x?

• MapReduce version 2

• Managed Resources version 2

• Massive Reduction version 2

• MapRegistry version 2

Which feature of Hadoop 2.0 ensures fault tolerance for NameNode?

• YARN

• MRv2

• Federation

• High Availability

Which allows running multiple NameNodes in Hadoop?

• MapReduce

• Yarn

• HDFS Federation

• Pig

Which component breaks MR jobs into stages and tasks in Hadoop?

• YARN

• ResourceManager

• NodeManager

• JobTracker

Which is the default scheduler in YARN?

• FIFO

• Fair

• Capacity

• Random

Can MapReduce v1 jobs run on YARN?

• No

• Yes, without changes

• Only with Hive

• Only on HDFS Federation