Hadoop is a framework that allows the distributed processing of:
Large Data Sets
Excellent ! Your Answer is Correct.
Semi-Large Data Sets
Small Data Sets
Large and Small Data sets
Category: Hadoop Basics
DUMP Statement writes the output in a file.
DUMP Statement writes the output in a file.
FALSE
Excellent ! Your Answer is Correct.
TRUE
None of the Option is Correct
Which of the following is not a valid Hadoop config file?
Which of the following is not a valid Hadoop config file?
hadoop-site.xml
Excellent ! Your Answer is Correct.
mapred-site.xml
core-site.xml
Masters
Point out the wrong statement.
Point out the wrong statement.
bfs executes a dfs command from the Hive shell
Excellent ! Your Answer is Correct. Explanation: dfs executes a dfs command from the Hive shell.
source FILE executes a script file inside the CLI
hive is Query language similar to SQL
None of the Option is Correct
_________ stores its metadata on multiple disks that typically include a non-local file server.
_________ stores its metadata on multiple disks that typically include a non-local file server.
NameNode
Excellent ! Your Answer is Correct. Explanation: HDFS tolerates failures of storage servers (called DataNodes) and its disks.
DataNode
ActionNode
None of the Option is Correct
Which of the following phases occur simultaneously?
Which of the following phases occur simultaneously?
Shuffle and Sort
Excellent ! Your Answer is Correct. Explanation: The shuffle and sort phases occur simultaneously; while map-outputs are being fetched they are merged.
Reduce and Sort
Shuffle and Map
All Options are Correct
Hadoop achieves reliability by replicating the data across multiple hosts, and hence does not require ________ storage on hosts.
Hadoop achieves reliability by replicating the data across multiple hosts, and hence does not require ________ storage on hosts.
RAID
Excellent ! Your Answer is Correct. With the default replication value, 3, data is stored on three nodes: two on the same rack, and one on a different rack.
Standard RAID levels
ZFS
Operating system
Which of the following platforms does Hadoop run on ?
Which of the following platforms does Hadoop run on ?
Cross-platform
Excellent ! Your Answer is Correct. Hadoop has support for cross platform operating system.
Bare metal
Debian
Unix-like
What was Hadoop written in ?
What was Hadoop written in ?
Java (programming language)
Excellent ! Your Answer is Correct. The Hadoop framework itself is mostly written in the Java programming language, with some native code in C and command line utilities written as shell-scripts.
Java (software platform)
Perl
Lua (programming language)
Which of the following genres does Hadoop produce ?
Which of the following genres does Hadoop produce ?
Distributed file system
Excellent ! Your Answer is Correct. The Hadoop Distributed File System (HDFS) is designed to store very large data sets reliably, and to stream those data sets at high bandwidth to user.
JAX-RS
Java Message Service
Relational Database Management System