MCQ Bank
MapReduce is devised at _______________.
- A) Google
- B) Facebook
- C) Yahoo
- D) Amazon
Hadoop Distributed File System (HDFS) is a distributed file system which is designed to run on:
- A) Powerful hardware
- B) Costly hardware
- C) Commodity hardware
- D) Special hardware
Which of the following command will start the namenode as well as the data nodes as cluster?
- A) $ start-dfs.sh
- B) $ start-dfs.hh
- C) $ start-dfs.sn
- D) $ start-dfs.hs
Which of the following is known as a Complex type in Hive?
- A) STRING
- B) FLOAT
- C) INT
- D) STRUCT
HDFS follows the __________ architecture.
- A) Node-node
- B) Worker-slave
- C) Master-slave
- D) Master-worker
The minimum amount of data that HDFS can read or write is called a __________________.
- A) WORD
- B) Block
- C) Bit
- D) Byte
In Hbase, which of the following command deletes all the cells in a given row?
- A) delete
- B) drop
- C) truncate
- D) deleteall
Which of the following is not related to Hadoop file system?
- A) Hbase
- B) Hive
- C) Oracle
- D) HDFS
Hbase provides data replication across ____________.
- A) Tables
- B) Servers
- C) Clients
- D) Clusters
Sqoop Import is used to transfer data:
- A) From Hadoop file system to Relational Database Management System.
- B) From Relational Database Management System to Hadoop file system
- C) From Relational Database Management System to Relational Database Management System.
- D) From Hadoop file system to Hadoop file system.
________ is the slave/worker node and holds the user data in the form of Data Blocks.
- A) NameNode
- B) Data block
- C) DataNode
- D) Replication
In Sqoop, the import tool imports _________from RDBMS to HDFS.
- A) Individual Tables
- B) Individual Columns
- C) Individual Rows
- D) Individual record
Sqoop Export is used to transfer data:
- A) From Hadoop file system to Hadoop file system.
- B) From Relational Database Management System to Relational Database Management System.
- C) From Hadoop file system to Relational Database Management System.
- D) From Relational Database Management System to Hadoop file system.
Data consumer reads/accesses the data in HDFS ________ using HBase.
- A) Parallel
- B) Sequentially
- C) Directly
- D) Randomly
Which of the following is not belongs to RDBMS?
- A) DB2
- B) Postgresql
- C) HDFS
- D) Mysql
exists is a _______________, while truncate is a __________ command in Hbase.
- A) General , DML
- B) DDL , DML
- C) DML , DDL
- D) DDL , General
Put and Get commands belong to ___________ in Hbase.
- A) General Commands
- B) Basic Commands
- C) DDL
- D) DML
Hadoop streaming is a utility comes with Hadoop distribution that allows to:
- A) Write and execute MapReduce code in C++ only
- B) Write and execute MapReduce code in JAVA only
- C) Write and execute MapReduce code in Python only
- D) Write and execute MapReduce code in languages other than JAVA
MapReduce is a ________________ programming model for writing distributed applications.
- A) Serial
- B) Linear
- C) Sequential
- D) Parallel
The Hadoop Distributed File System has the following elements except _____.
- A) Datanode
- B) Block
- C) Namenode
- D) Slavenode