1.Hadoop is a framework that works with a variety of related tools. Common cohorts include:
a)MapReduce, Hive and HBase
b)MapReduce, MySQL and Google Apps
c)MapReduce, Hummer and Iguana
dMapReduce, Heron and Trumpet
a)MapReduce, Hive and HBase
Explanation: To use Hive with HBase you’ll typically want to launch two clusters, one to run HBase and the other to run Hive
2. What does commodity Hardware in Hadoop world mean?
a)Very cheap hardware
b)Industry standard hardware
c)Discarded hardware
d)Low specifications Industry grade hardware
d)Low specifications Industry grade hardware
Explanation: The Hadoop Distributed File System (HDFS) is a distributed file system designed to run on hardware based on open standards or what is called commodity hardware.
3.During Safemode Hadoop cluster is in:
a)Read-only
b)Write-only
c)Read-Write
d)None of the above
a)Read-only
Explanation: During Safe Mode, HDFS cluster is read-only and doesn't replicate or delete blocks.
4.Which of the following is advantage of 3x replication schema in Hadoop?
a)High availability
b)Fault tolerance
c)Reliability
d)All of the above
d) All of the above
Explanation:High availability, Fault tolerance, Reliabilityis advantage of 3x replication schema in Hadoop.
5.Which of the following statement is incorrect about Hadoop?.
a)It runs with commodity hard ware
b)It is best for live streaming of data
c)It is a part of the Apache project sponsored by the ASF
d)All of the above
b)It is best for live streaming of databr /> Explanation: Hadoop is not best for processing data in a live streaming environment.
5.Which of the following option is used for Machine Learning in Hadoop?
a)Hive
b)HBase
c)Pig
d)Mahoot
d)Mahootbr /> Explanation: : Mahoot is used for machine learning in Hadoop.
5.Which of the following is the most popular NoSql database for scalable big data stores with Hadoop?
a)MongoDB
b)Hbase
c)Cassandra
d)None of the above
b)Hbasebr /> Explanation: Hadoop is not best for processing data in a live streaming environment.
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