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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 - What is the main problem faced while reading and writing data in parallel from multiple disks?
A - Processing high volume of data faster.
B - Combining data from multiple disks.
C - The software required to do this task is extremely costly.
D - The hardware required to do this task is extremely costly.
Answer : B
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.
Answer : B
Q 3 - The client reading the data from HDFS filesystem in Hadoop
A - gets the data from the namenode
B - gets the block location from the datanode
Answer : C
Q 4 - The file in Namenode which stores the information mapping the data block location with file name is −
Answer : C
Q 5 - In Hadoop, Snappy and LZO are examples of
A - Mechanisms of file transport between data nodes
B - Mechanisms of data compression
Answer : B
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 7 - The data from a remote hadoop cluster can
Answer : D
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.