Hadoop Online Quiz

Q 1 - Which of these provides a Stream processing system used in Hadoop ecosystem?

A - Solr

B - Tez

C - Spark

D - Hive

Q 2 - For the frequently accessed HDFS files the blocks are cached in

A - the memory of the datanode

B - in the memory of the namenode

C - Both A&B

D - In the memory of the client application which requested the access to these files.

Q 3 - Which of this is not a scheduler options available with YARN?

A - Optimal Scheduler

B - FIFO scheduler

C - Capacity scheduler

D - Fair scheduler

Q 4 - The file in Namenode which stores the information mapping the data block location with file name is −

A - dfsimage

B - nameimage

C - fsimage

D - image

Q 5 - Which of the below apache system deals with ingesting streaming data to hadoop

A - Ozie

B - Kafka

C - Flume

D - Hive

Q 6 - The fully distributed mode of installation(without virtualization) needs a minimum of

A - 2 physical mashines

B - 3 Physical machines

C - 4 Physical machines

D - 1 Physical machine

Q 7 - When you increase the number of files stored in HDFS, The memory required by namenode

A - Increases

B - Decreases

C - Remains unchanged

D - May increase or decrease

Q 8 - When a jobTracker schedules a task is first looks for

A - A node with empty slot in the same rack as datanode

B - Any node on the same rack as the datanode

C - Any node on the rack adjacent to rack of the datanode

D - Just any node in the cluster

Q 9 - What is HBASE?

A - Hbase is separate set of the Java API for Hadoop cluster.

B - Hbase is a part of the Apache Hadoop project that provides interface for scanning large amount of data using Hadoop infrastructure.

C - Hbase is a "database" like interface to Hadoop cluster data.

D - HBase is a part of the Apache Hadoop project that provides a SQL like interface for data processing.

Q 10 - Keys from the output of shuffle and sort implement which of the following interface?

A - Writable.

B - WritableComparable.

C - Configurable.

D - ComparableWritable.

E - Comparable.