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Big Data Analytics Unit-3

Authored by SravanKumarReddy M

Computers

University

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Big Data Analytics Unit-3
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22 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary purpose of using Hadoop in data analysis?

To run data analysis on a single machine

To provide parallel processing capabilities

To visualize data using charts

To store data in a relational database

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which tool is commonly used for processing line-oriented data in Unix?

grep

cut

awk

sed

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the Map function in MapReduce primarily do?

Processes input data and emits key-value pairs

Combines results from multiple mappers

Sorts the output data

Runs the final output to the user

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the context of MapReduce, what is a combiner function used for?

To reduce the number of output records

To combine input data from different sources

To visualize the output data

To manage configuration settings

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of the JobTracker in Hadoop?

To execute map tasks

To manage the overall job execution process

To store the output data

To monitor the health of the cluster

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which class is used to define the Mapper in a Java MapReduce job?

MaxTemperatureMapper

Mapper

MapDriver

Job

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the output format of the Map function in MapReduce?

Data frames

Key-value pairs

Sorted lists

Single values

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