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Big Data Quiz 2

Total questions: 80

Worksheet time: 2hrs 8mins

Name
Class
Date
1.

A ________ serves as the master and there is only one NameNode per cluster.

a)

Data Node

b)

NameNode

c)

Data block

d)

Replication

2.

HDFS works in a __________ fashion

a)

master-worker

b)

master-slave

c)

worker/slave

d)

worker/master

3.

________ NameNode is used when the Primary NameNode goes down.

a)

Rack

b)

Data

c)

Secondary

d)

Name

4.

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

a)

Replication Factor is changed

b)

DataNode goes down

c)

Data Blocks get corrupted

d)

All of the mentioned

5.

HDFS is implemented in _____________ programming language.

a)

Scala

b)

C++

c)

Java

d)

C

6.

5.Who created the hadoop?

a)

dennis ritchie

b)

james goasling

c)

Doug Cutting

d)

Carlo strozzi

7.

11.HDFS can be deployed on____________

a)

high cost hardware

b)

low cost software

c)

high cost software

d)

low cost hardware

8.

16. RDBMS supports _____ data formats.

a)

unstructured

b)

structured

c)

semi structured

d)

All th above

9.

17. DataNode is responsible for ________ file operation

a)

Read only

b)

Write only

c)

Read / Write

d)

View only

10.

18. ______ is the bookkeepper of HDFS.

a)

NameNode

b)

DataNode

c)

SecondaryNode

d)

None of the above

11.

Big data is the massive amount of rapidly moving and freely ..................

a)

Available data

b)

Unavailable data

c)

Structured Data

d)

Unstructured Data

12.

Which of the following are examples of how people give up some of their privacy in order to gain something in return (utility)?

a)

Students make sure to use the “Incognito” tab in a web browser so that none of the browsing history is saved and all cache is cleared at the end of the browsing session.

b)

People only use cash to pay for products since they do not have any credit cards.

c)

Customers sign up for “rewards” programs for different grocery stores so that they can get discounts on different items throughout the store.

d)

People enable GPS on their phone so that Apps can locate nearby stores, restaurants and hotels.

13.

What should you look for when you want to control who sees your content on social media?

a)

cookies

b)

target

c)

privacy settings

d)

not possible

14.

What do criminals do when they try to steal information or services from people on the internet?

a)

target

b)

internet use

c)

hack

d)

data analysis

15.

What do companies collect that can identify you on the internet?

a)

consumer

b)

cookies

c)

privacy policy

d)

personal information

16.

Where can you find information about what a website collects and shares when you sign up for their site??

a)

identity theft

b)

cookies

c)

personal information

d)

privacy policy

17.

What is the tiny piece of data that allows google to remember our password?

a)

identity theft

b)

cookie

c)

personal information

d)

privacy policy

18.

Who are people who purchase products or services either online or in a store?

a)

identity theft

b)

cookie

c)

consumer

d)

privacy settings

19.

What is the true definition of big data

a)

huge amount of space

b)

large, diverse sets of information

c)

unlimited speed data internet connection

d)

small, undiverse sets of information

20.

What is NOT a characteristic of big data?

a)

Volume

b)

Variety

c)

Vision

d)

Velocity

21.

Variety is a characteristic of big data. Which type of formats does Variety comes from?

a)

Structured

b)

Unstructured

c)

Semi-structured

d)

All of the above

22.

What does Velocity refers to?

a)

processing speed of a data

b)

speed of an internet

c)

the volume to the city

23.

Variety comes from structured or unstructured format. What is the difference between them?

a)

Handwritten / Computer-typed

b)

Numerical format / Natural Language

c)

Clean / Dirty

d)

Subjective / Objective

24.

Which of the following would NOT use big data analysis?

a)

Healthcare companies

b)

Public agencies

c)

Retail companies

d)

High school students doing homework

25.

We call it big data because...

a)

the information is as large as a dinosaur.

b)

there is a lot of information.

c)

it is a very important date.

d)

the dinosaurs knows lots of information.

26.

Select all the places where big data can come from. There can be more than 1 answer.

a)

Business Transaction Systems

b)

Customer Databases

c)

Clickstream Logs

d)

Social Networks

e)

Medical Records

27.

The volume of data describes

a)

how much data there is.

b)

how loud or quiet the data is.

c)

how puffy the data is.

d)

how much 3 dimensional space the data takes up.

28.

Velocity of data describes how quickly data is

a)

generated, processed, and changed.

b)

sent from one point to another.

c)

generated, processed, and collected.

d)

received by our brains.

29.

Data veracity describes its

a)

trustworthiness

b)

size

c)

importance

d)

type

30.

Big Data is significant because of all of the following except it___________________.

a)

helps us in identifying trends in data

b)

allows us to determine how much data a database can store

c)

can be used to make connections in data

d)

helps us solve questions we might have

31.

Spreadsheets and databases are examples of software tools that allow us to process Big Data.

a)

True

b)

False

32.

Credit card transactions, measurements, sound files, and images that can be classified as Big Data Sets.

a)

True

b)

False

33.

What does SaaS mean?

a)

Software as a Service

b)

Software as a Solution

c)

Software as a System

d)

Software as a Secret

34.

9. What is an advantage of the managing supply chain issues

a)

optimizes usage and ensure the long-term health of farm equipment

b)

tracking and optimizing delivery truck routes

c)

recommending what pesticides to apply, when, and by how much

d)

make smart decisions, such as what crops to plant for better profitability and when to harvest

35.

Sources of Big Data

a)

Social Networks

b)

Excel files

c)

Share Marketing

d)

Normal Documents

36.

Any data that can be stored, accessed and processed in the form of fixed format is called.............

a)

Data format

b)

Structured data

c)

Semi Structured data

d)

Unstructured data

37.

................ is a heterogeneous data source containing a combination of simple text files, images, video etc.

a)

Unstructured data

b)

Semi-Structured data

c)

Structured data

d)

None

38.

XML representation is an example of..............

a)

Unstructured data

b)

Structured data

c)

Semi-Structured data

d)

None

39.

HDFS stands for...........

a)

Hadoop developer file server

b)

Hadoop developer file service

c)

Hadoop distributed file service

d)

Hadoop distributed file system

40.

......... is a primary or major component of Hadoop Eco system and is responsible for storing large data sets of structured or unstructured data.

a)

MapReduce

b)

Zookeeper

c)

Solar

d)

HDFS

41.

What are the two core components of HDFS?

a)

Data Node

b)

Resource manager

c)

Application Manager

d)

Name node

42.

What is the advantages on using big data in education in real life?

a)

A: Cost reduction

b)

B: Higher risk

c)

C: Effective learning

d)

D: A and B only

e)

E: A and C only

43.

An orange grove company has sensors in the trees and on the machines that harvest the oranges. A camera mounted on the harvester takes a close-up picture of the orange every 5 minutes. Live data is sent to the distributor who gets this data from 100 companies. Does the distributor have big data?

a)

Yes

b)

No

44.

Which of the following refers to different types of data?

a)

Volume

b)

Velocity

c)

Variety

45.

An independent t-shirt vendor advertises through Facebook and other social media sites. The vendor receives statistics on the customer demographics. Does the vendor have big data?

a)

Yes

b)

No

46.

Smart parking meters, real-time street traffic video, and crime statistics feed data to an app that shows users recommended and available parking spaces as well as information regarding cost and a safety/security rating. Does the app use big data?

a)

Yes

b)

No

47.

A large European city has sensors installed in ambulances and police cars to verify that the emergency response services are adequate in all areas of the city. This example would generate big data.

a)

True

b)

False

48.

A corporation generates data from their web site, from sensors, and from internal documents. What characteristic of big data does this describe?

a)

Variety

b)

Redundancy

c)

Viscocity

d)

Volume

49.

The one who responsible for build an effective data architecture

a)

Data engineer

b)

Data analyst

c)

Data scientist

50.

Look at this series: 12, 11, 13, 12, 14, 13, … What number should come next?

a)

10

b)

16

c)

13

d)

15

51.

Safe : Secure :: Protect :

a)

Lock

b)

Guard

c)

Sure

d)

Conserve

52.

One day raj left home and walked 5 km northwards, turned right and walked for 10km and turned left and walked 5 km more and finally turned left and walked 10km. How many kilometers will he have to walk to reach his home straight?

a)

15 KM

b)

10 KM

c)

25 KM

d)

5 KM

53.

If ‘-’ means ‘+’, ‘+’ means ‘-’, ‘*’ means ‘÷’ and ‘÷’ means ‘*’ then which of the following will be the correct equation?

a)

10 + 5 - 14 ÷ 10 * 15 = 158

b)

30 + 5 + 14 - 10 * 15 = 122

c)

30 - 5 + 14 ÷ 10 * 15 = 162

d)

30 * 5 - 4 ÷ 10 + 15 = 31

54.

The following equation becomes mathematically correct when you interchange either the sign or the Numbers as indicated in the question. Find the correct alternative.


Given equation;

(16 - 4) x 6 ÷ 2 + 8 = 30

a)

4 and 2

b)

16 and 6

c)

+ and -

d)

-and +

55.

In a row of children, Divya is 7th from the left and Vijay is 9th from the right. When they interchange their places among themselves, Divya becomes 18th From the left. Then what will be Vijay present position from the right ?

a)

6th

b)

16th

c)

26th

d)

20th

56.

Which number would replace the underline mark in the series 20, 40, 100, _, 820?

a)

240

b)

260

c)

280

d)

300

57.

What are the missing numbers in this series, 15, 20, 24, 15, 28, 32 15, _, _, 15?

a)

37,41

b)

36,40

c)

38,42

d)

40,44

58.

12, 24, 14, 28, 18, 36, __

a)

24

b)

25

c)

26

d)

28

59.

Find the missing numbers in the series, 4, 20, 7, 14, 10, 8, 13, _, _.

(a)  

60.

Find the next two numbers in the series 5, 12, 15, 22, 25, 32, _, _.

(a)  

61.

ELFA, GLHA, ILJA,_____,MLNA

a)

OLPA

b)

KLMA

c)

LLMA

d)

KLLA

62.

SCD, TEF, UGH, _____, WKL

a)

CMN

b)

UJI

c)

VIJ

d)

IJT

63.

If A is the brother of B; B is the sister of C; and C is the father of D, how D is related to A ?

a)

Brother

b)

Sister

c)

Nephew

d)

Cannot be determined

64.

Arrange the words given below in a meaningful sequence.

1. Key 2. Door 3. Lock 4. Room 5. Switch on

a)

5,1,2,4,3

b)

4,2,1,5,3

c)

1,3,2,4,5

d)

1,2,3,5,4

65.

A,P,R,X,S and Z are sitting in a row. S and Z are in the centre. A and P are the ends. R is sitting to the left of A. Who is to the right of P ?

a)

A

b)

X

c)

S

d)

Z

66.

Y is in the East of X which is in the North of Z. If P is in the South of Z, then in which direction of Y, is P ?

a)

North

b)

South

c)

South- West

d)

South- East

67.

Introducing a boy, a girl said , " He is the son of the daughter of the father of my Uncle."How is the boy related to the girl ?

a)

Brother

b)

Nephew

c)

Uncle

d)

Son- in- law

68.

0,2,8,14,?,34. Find the missing term.

a)

20

b)

23

c)

24

d)

25

69.

.......... has the world’s largest Hadoop cluster.

a)

Facebook

b)

Apple

c)

Datamatics

d)

None

70.

What was Hadoop written in ?

a)

C

b)

C++

c)

Java

d)

JSP

71.

The Hadoop list includes the HBase database, the Apache Mahout ________ system, and matrix operations

a)

Machine learning

b)

Pattern recognition

c)

Statistical classification

d)

AI

72.

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

a)

NameNode

b)

DataNode

c)

Data block

d)

Replication

73.

________________is a resource management platform responsible for managing compute resources in the cluster and using them in order to schedule users and applications.

a)

Hadoop Common

b)

Hadoop Distributed File System (HDFS)

c)

Hadoop YARN

d)

Hadoop MapReduce

74.

What are the main components of Hadoop Ecosystem?

a)

MapReduce, HDFS, YARN

b)

MLlib, GraphX

c)

Gelly, Table, CEP

d)

None of the mentioned

75.

Consider the following statements:


Statement 1: Volatility refers to the data velocity relative to timescale of event being studied


Statement 2: Viscosity refers to the rate of data loss and stable lifetime of data

a)

Only statement 1 is true

b)

Only statement 2 is true

c)

Both statements are true

d)

Both statements are false

76.

Hadoop is named after

a)

Doug cuttings father

b)

Doug cuttings company

c)

Doug cuttings son toy elephant

d)

Doug cutting

77.

All of the following accurately describes Apache Hadoop except

a)

Distributed processing

b)

Java based

c)

Open source

d)

Best for little amounts of data also

78.

Which of the following are characteristics of a DBMS

a)

Self-Describing

b)

Support Multiple Views

c)

Single user systems

d)

Data Sharing

79.

Who is responsible for authorizing access to the database, coordinating and monitoring its use

a)

Database programmer

b)

System Analyst

c)

DBA

d)

Specialised user

80.

Which command is used to remove all rows from a table ?

a)

Delete

b)

Remove

c)

Truncate

d)

Both [A] and [B]