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 - The concept using multiple machines to process data stored in distributed system is not new.
The High-performance computing (HPC) uses many computing machines to process large volume of data stored in a storage area network (SAN). As compared to HPC, Hadoop
A - Can process a larger volume of data.
B - Can run on a larger number of machines than HPC cluster.
C - Can process data faster under the same network bandwidth as compared to HPC.
Answer : C
Q 2 - The main role of the secondary namenode is to
A - Copy the filesystem metadata from primary namenode.
B - Copy the filesystem metadata from NFS stored by primary namenode
C - Monitor if the primary namenode is up and running.
D - Periodically merge the namespace image with the edit log.
Answer : D
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 hdfs command to create the copy of a file from a local system is
Answer : D
Q 5 - If the IP address or hostname of a datanode changes
A - The namenode updates the mapping between file name and block name
B - The namenode need not update mapping between file name and block name
Answer : B
Q 6 - The inter process communication between different nodes in Hadoop uses
Answer : B
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 - You can reserve the amount of disk usage in a data node by configuring the dfs.datanode.du.reserved in which of the following file
Answer : A
Q 9 - Which one of the following is not true regarding to Hadoop?
A - It is a distributed framework.
B - The main algorithm used in it is Map Reduce
Answer : D
Q 10 - Which of the following components retrieves the input splits directly from HDFS to determine the number of map tasks?
