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 - Zookeeper ensures that
A - All the namenodes are actively serving the client requests
B - Only one namenode is actively serving the client requests
Answer : B
Q 3 - The property used to set the default filesystem for Hadoop in core-site.xml is-
Answer : B
Q 4 - When the namenode finds that some blocks are over replicated, it
A - Stops the replication job in the entire hdfs file system.
B - It slows down the replication process for those blocks
Answer : C
Q 5 - In the secondary namenode the amount of memory needed is
A - Similar to that of primary node
B - Should be at least half of the primary node
C - Must be double of that of primary node
D - Depends only on the number of data nodes it is going to handle
Answer : A
Q 6 - Rack awareness in name node means
A - It is aware how many racks are available in the cluster
B - It is aware of the mapping between the node and the rack
C - It is aware of the number of nodes in each of the rack
D - It is aware which data nodes are unavailable in the cluster.
Answer : B
Q 8 - In a HDFS system with block size 64MB we store a file which is less than 64MB. Which of the following is true?
A - The file will consume 64MB
B - The file will consume more than 64MB
Answer : C
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 is false about RawComparator ?
B - Performance can be improved in sort and suffle phase by using RawComparator.
C - Intermediary keys are deserialized to perform a comparison.