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.

Questions and Answers

Q 1 - Which utility is used for checking the health of a HDFS file system?

A - fchk

B - fsck

C - fsch

D - fcks

Answer : B

Answer : B

Q 3 - The following is not permitted on HDFS files

A - Deleting

B - Renaming

C - Moving

D - Executing.

Answer : D

Q 4 - The command to check if Hadoop is up and running is −

A - Jsp

B - Jps

C - Hadoop fs –test

D - None

Answer : B

Answer : A

Answer : A

Q 8 - The namenode loses its only copy of fsimage file. We can recover this from

A - Datanodes

B - Secondary namenode

C - Checkpoint node

D - Never

Answer : C

Q 9 - Which of the following technologies is a document store database?

A - HBase

B - Hive

C - Cassandra

D - CouchDB

Answer : D

Q 10 - When writing data to HDFS what is true if the replication factor is three? (Choose 2 answers)

  1. Data is written to DataNodes on three separate racks (if Rack Aware).

  2. The Data is stored on each DataNode with a separate file which contains a checksum value.

  3. Data is written to blocks on three different DataNodes.

  4. The Client is returned with a success upon the successful writing of the first block and checksum check.

A - 1 & 3

B - 2 & 3

C - 3 & 4

D - 1 & 4

Answer : C


hadoop_questions_answers.htm

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