Hadoop Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to Hadoop Framework. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - In a Hadoop cluster, what is true for a HDFS block that is no longer available due to disk corruption or machine failure?
B - It can be replicated form its alternative locations to other live machines.
C - The namenode allows new client request to keep trying to read it.
D - The Mapreduce job process runs ignoring the block and the data stored in it.
Answer : B
Q 2 - In Hadoop 2.x release HDFS federation means
A - Allowing namenodes to communicate with each other.
B - Allow a cluster to scale by adding more datanodes under one namenode.
C - Allow a cluster to scale by adding more namenodes.
D - Adding more physical memory to both namenode and datanode.
Answer : C
Q 3 - Which of the following is not a fencing mechanism for a previously active namenode?
A - Disabling its network port via a remote management command.
B - Revoking its access to shared storage directory.
Answer : C
Q 4 - The command to check if Hadoop is up and running is −
Answer : B
Q 5 - HDFS stands for
A - Highly distributed file system.
B - Hadoop directed file system
Answer : D
Q 6 - The purpose of checkpoint node in a Hadoop cluster is to
A - Check if the namenode is active
B - Check if the fsimage file is in sync between namenode and secondary namenode
C - Merges the fsimage and edit log and uploads it back to active namenode.
Answer : C
Q 7 - The current limiting factor to the size of a hadoop cluster is
A - Excess heat generated in data center
B - Upper limit of the network bandwidth
Answer : C
Q 8 - The namenode loses its only copy of fsimage file. We can recover this from
Answer : C
Q 9 - What is HBASE?
A - Hbase is separate set of the Java API for Hadoop cluster.
C - Hbase is a "database" like interface to Hadoop cluster data.
Answer : B
Q 10 - Which one of the following is not a main component of HBase?