Hadoop Online Quiz

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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 - HDFS block size is larger as compared to the size of the disk blocks so that

A - Only HDFS files can be stored in the disk used.

B - The seek time is maximum

C - Transfer of a large files made of multiple disk blocks is not possible.

D - A single file larger than the disk size can be stored across many disks in the cluster.

Answer : D

Q 2 - For the frequently accessed HDFS files the blocks are cached in

A - the memory of the datanode

B - in the memory of the namenode

C - Both A&B

D - In the memory of the client application which requested the access to these files.

Answer : A

Q 3 - The following is not permitted on HDFS files

Answer : D

Q 4 - Which of the below property gets configured on hdfs-site.xml ?

A - Replication factor

B - Directory names to store hdfs files.

C - Host and port where MapReduce task runs.

D - Java Environment variables.

Answer : A

Q 5 - The Hadoop tool used for uniformly spreading the data across the data nodes is named −

Answer : B

Q 6 - When a machine is declared as a datanode, the disk space in it

A - Can be used only for HDFS storage

B - Can be used for both HDFS and non-HDFs storage

C - Cannot be accessed by non-hadoop commands

D - cannot store text files.

Answer : B

Q 7 - The comman used to copy a directory form one node to another in HDFS is

Answer : D

Q 8 - When a jobTracker schedules a task is first looks for

A - A node with empty slot in the same rack as datanode

B - Any node on the same rack as the datanode

C - Any node on the rack adjacent to rack of the datanode

D - Just any node in the cluster

Answer : A

Q 9 - Which technology is used to import and export data in Hadoop?

Answer : C

Q 10 - You have loads of data that can be processed by you MRjobs. However you need the data to be available to Analysts and Scients in you organisation. What is the best format to represent the input?

Answer : B

hadoop_questions_answers.htm

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