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 - Which of the following is true for disk drives over a period of time?
A - Data Seek time is improving faster than data transfer rate.
B - Data Seek time is improving more slowly than data transfer rate.
C - Data Seek time and data transfer rate are both increasing proportionately.
D - Only the storage capacity is increasing without increase in data transfer rate.
Answer : B
Q 2 - What mechanisms Hadoop uses to make namenode resilient to failure.
A - Take backup of filesystem metadata to a local disk and a remote NFS mount.
B - Store the filesystem metadata in cloud.
Answer : A
Q 3 - Which of the following is not a Hadoop operation mode?
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 - The output of a mapper task is
A - The Key-value pair of all the records of the dataset.
B - The Key-value pair of all the records from the input split processed by the mapper
Answer : B
Q 6 - The source of HDFS architecture in Hadoop originated as
A - Google distributed filesystem
B - Yahoo distributed filesystem
Answer : A
Q 7 - The archive file created in Hadoop always has the extension of
Answer : B
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 - When using HDFS, what occurs when a file is deleted from the command line?
A - It is permanently deleted if trash is enabled.
B - It is placed into a trash directory common to all users for that cluster.
C - It is permanently deleted and the file attributes are recorded in a log file.
D - It is moved into the trash directory of the user who deleted it if trash is enabled.
Answer : C
Q 10 - Which one of the following is not a main component of HBase?
