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 - Under HDFS federation

A - Each namenode manages metadata of the entire filesystem.

B - Each namenode manages metadata of a portion of the filesystem.

C - Failure of one namenode causes loss of some metadata availability from the entire filesystem.

D - Each datanode registers with each namenode.

Q 3 - For a HDFS directory the replication factor(RF) is

A - same as the RF of the files in that directory

B - Zero

C - 3

D - Does not apply.

Q 4 - Which of the below property gets configured on hdfs-site.xml ?

A - Replication factor

B - Directory names to store hdfs files.

C - Host and port where MapReduce task runs.

D - Java Environment variables.

Q 5 - The Hadoop tool used for uniformly spreading the data across the data nodes is named −

A - Scheduler

B - Balancer

C - Spreader

D - Reporter

Q 6 - When a file in HDFS is deleted by a user

A - it is lost forever

B - It goes to trash if configured.

C - It becomes hidden from the user but stays in the file system

D - File sin HDFS cannot be deleted

Q 7 - The data from a remote hadoop cluster can

A - not be read by another hadoop cluster

B - be read using http

C - be read using hhtp

D - be read suing hftp

Q 8 - Which of the following is not a scheduling option available in YARN

A - Balanced scheduler

B - Fair scheduler

C - Capacity scheduler

D - FiFO schesduler.

Q 9 - Which of the following technologies is a document store database?

A - HBase

B - Hive

C - Cassandra

D - CouchDB

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.