_____ is a utility which users to create and run jobs with any executables as the mapper and/or the reducer.

_____ is a utility which users to create and run jobs with any executables as the mapper and/or the reducer.
Hadoop Streaming
Excellent ! Your Answer is Correct.
Hadoop Strdata
Hadoop Stream
None of the Option is Correct

HDFS provides a command line interface called ____ used to interact with HDFS.

HDFS provides a command line interface called ____ used to interact with HDFS.
“FS Shell”
Excellent ! Your Answer is Correct.
“HDFS Shell”
“DFS Shell”
None of the Option is Correct

During start up, the ___________ loads the file system state from the fsimage and the edits log file.

During start up, the ___________ loads the file system state from the fsimage and the edits log file.
NameNode
Excellent ! Your Answer is Correct. Explanation: HDFS is implemented on any computer which can run Java can host a NameNode/DataNode on it.
DataNode
ActionNode
None of the Option is Correct

For ________ the HBase Master UI provides information about the HBase Master uptime.

For ________ the HBase Master UI provides information about the HBase Master uptime.
Hbase
Excellent ! Your Answer is Correct. Explanation: HBase Master UI provides information about the num­ber of live, dead and transitional servers, logs, ZooKeeper information, debug dumps, and thread stacks.
Oozie
Kafka
All Options are Correct

Point out the correct statement.

Point out the correct statement.
The Hadoop framework publishes the job flow status to an internally running web server on the master nodes of the Hadoop cluster
Excellent ! Your Answer is Correct. Explanation: The web interface for the Hadoop Distributed File System (HDFS) shows information about the NameNode itself.
Each incoming file is broken into 32 MB by default
Data blocks are replicated across different nodes in the cluster to ensure a low degree of fault tolerance
None of the Option is Correct

For YARN, the ___________ Manager UI provides host and port information.

For YARN, the ___________ Manager UI provides host and port information.
Resource
Excellent ! Your Answer is Correct. Explanation: All the metadata related to HDFS including the information about data nodes, files stored on HDFS, and Replication, etc. are stored and maintained on the NameNode.
Replication
NameNode
Data Node

HDFS is implemented in _____________ programming language.

HDFS is implemented in _____________ programming language.
Java
Excellent ! Your Answer is Correct. Explanation: HDFS is implemented in Java and any computer which can run Java can host a NameNode/DataNode on it.
C++
Scala
None of the Option is Correct

HDFS provides a command line interface called __________ used to interact with HDFS.

HDFS provides a command line interface called __________ used to interact with HDFS.
“FS Shell”
Excellent ! Your Answer is Correct. Explanation: The File System (FS) shell includes various shell-like commands that directly interact with the Hadoop Distributed File System (HDFS).
“HDFS Shell”
“DFS Shell”
None of the Option is Correct

________ is the slave/worker node and holds the user data in the form of Data Blocks.

________ is the slave/worker node and holds the user data in the form of Data Blocks.
DataNode
Excellent ! Your Answer is Correct. Explanation: A DataNode stores data in the [HadoopFileSystem]. A functional filesystem has more than one DataNode, with data replicated across them.
NameNode
Data block
Replication

The need for data replication can arise in various scenarios like ____________

The need for data replication can arise in various scenarios like ____________
All Options are Correct
Excellent ! Your Answer is Correct. Explanation: Data is replicated across different DataNodes to ensure a high degree of fault-tolerance.
Replication Factor is changed
DataNode goes down
Data Blocks get corrupted
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