Big data and the cloud quiz

Question 1

What does the term "big data" mean?

Accepted Answer

Extremely large, complex datasets too big for ordinary tools

Answer

Any file larger than one megabyte

Answer

Data that is printed on big paper

Answer

A single very long spreadsheet

Question 2

The "three V's" are often used to describe big data. What are they?

Accepted Answer

Volume, Velocity, Variety

Answer

Voltage, Volume, Value

Answer

Vision, Voice, Video

Answer

Variety, Vacuum, Velocity

Question 3

What is "the cloud" in computing?

Accepted Answer

Remote computers and storage you use over the internet

Answer

Water vapor that powers computers

Answer

A type of computer screen

Answer

Software that only works offline

Question 4

Where is your data actually stored when you save it "to the cloud"?

Accepted Answer

On servers in large data centers

Answer

Inside the clouds in the sky

Answer

Only on your own phone

Answer

On paper in a library

Question 5

What is a data center?

Accepted Answer

A building full of servers that store and process data

Answer

A shop that sells data plans

Answer

A single home computer

Answer

A place where books are stored

Question 6

Why is big data important for training AI and machine learning models?

Accepted Answer

More good examples help models learn better patterns

Answer

Big data is not needed for AI at all

Answer

It only makes models slower

Answer

It replaces the need for any computers

Question 7

What is one major benefit of storing data and running programs in the cloud instead of on one personal computer?

Accepted Answer

You can access data from anywhere and scale power easily

Answer

It works without electricity

Answer

It never needs the internet

Answer

It deletes your data automatically

Question 8

What does "scalability" mean for cloud computing?

Accepted Answer

Easily adding or removing computing power as needed

Answer

Making computers physically bigger

Answer

Weighing how much data costs

Answer

Drawing scales on a screen

Question 9

Streaming services like YouTube or Netflix use the cloud. How does this help them?

Accepted Answer

It stores huge libraries and serves many users at once

Answer

It lets them mail DVDs faster

Answer

It makes videos play without screens

Answer

It removes the need for internet

Question 10

What is a "server" in the context of the cloud?

Accepted Answer

A powerful computer that provides services to other computers

Answer

A waiter in a restaurant

Answer

A type of internet cable

Answer

A mobile phone app

Question 11

What kinds of devices and sources create big data every day?

Accepted Answer

Phones, sensors, social media, and many connected devices

Answer

Only old library books

Answer

Only one computer in a school

Answer

Just printed newspapers

Question 12

What is the Internet of Things (IoT), and how is it related to big data?

Accepted Answer

Everyday objects connected to the internet that share data

Answer

A type of board game

Answer

A single website

Answer

A brand of computer

Question 13

Why can't a single ordinary laptop usually process big data on its own?

Accepted Answer

The data is too large and slow for one machine alone

Answer

Laptops cannot connect to the internet

Answer

Laptops are not allowed to store data

Answer

Big data is actually very small

Question 14

What does "distributed computing" mean?

Accepted Answer

Splitting a task across many computers working together

Answer

Using one computer very slowly

Answer

Sharing your computer with friends physically

Answer

Distributing free computers to people

Question 15

What is the difference between "structured" and "unstructured" data?

Accepted Answer

Structured is organized in rows/columns, unstructured has no fixed format

Answer

Structured is colorful, unstructured is black and white

Answer

They are exactly the same

Answer

Structured data is always smaller in size

Question 16

A weather service collects readings from thousands of sensors every second. Which "V" of big data does this fast, constant arrival describe?

Accepted Answer

Velocity

Answer

Volume

Answer

Variety

Answer

Vacuum

Question 17

How do online stores use big data to suggest products you might like?

Accepted Answer

They find patterns in your and others' shopping behavior

Answer

They guess randomly with no data

Answer

They ask a human to watch each customer

Answer

They only show the cheapest item

Question 18

What is a privacy concern related to companies collecting big data about people?

Accepted Answer

Personal information could be misused, sold, or stolen

Answer

Data takes up too much room in the sky

Answer

Computers get too cold

Answer

Data makes the internet slower for fun

Question 19

Why is it important to keep big data secure in the cloud?

Accepted Answer

Because stolen data can harm people's privacy and safety

Answer

Because servers might float away

Answer

Because data centers run out of paper

Answer

Security is not actually important

Question 20

What is encryption, and how does it help protect data in the cloud?

Accepted Answer

Scrambling data into a secret code only a key can unlock

Answer

Deleting data permanently

Answer

Making data files smaller

Answer

Copying data to many places

Question 21

What does "data analytics" mean?

Accepted Answer

Examining data to find useful patterns and insights

Answer

Deleting old data

Answer

Building computer hardware

Answer

Painting charts for fun only

Question 22

How does the cloud help students and schools?

Accepted Answer

It lets students store and access work from any device and collaborate

Answer

It prints worksheets automatically

Answer

It replaces teachers entirely

Answer

It only works inside the school building

Question 23

What is a "backup," and why is cloud storage useful for backups?

Accepted Answer

An extra copy of data kept safe in case the original is lost

Answer

A way to slow down your computer

Answer

A type of computer virus

Answer

A program that deletes files

Question 24

How is the amount of data storage measured, from small to large?

Accepted Answer

Byte, kilobyte, megabyte, gigabyte, terabyte

Answer

Meter, liter, gram, second

Answer

Inch, foot, yard, mile

Answer

Pixel, frame, scene, movie

Question 25

Why might the quality of data matter as much as the quantity when training AI?

Accepted Answer

Bad or biased data makes models learn the wrong things

Answer

Quality never matters, only size

Answer

Small data is always better than big data

Answer

Quality only matters for games

Question 26

How can big data contain bias, and why is that a problem?

Accepted Answer

Unbalanced data can make AI unfair to some groups

Answer

Biased data is faster to download

Answer

Bias makes data colorful

Answer

Bias only affects the weather

Question 27

What does it mean to process data "in real time"?

Accepted Answer

Analyzing data almost instantly as it arrives

Answer

Storing data for many years before using it

Answer

Processing data only at night

Answer

Processing data by hand on paper

Question 28

A school stores all student photos online and notices it is using gigabytes of space. If 1 gigabyte is about 1000 megabytes, about how many megabytes are in 5 gigabytes?

Accepted Answer

About 5000 megabytes

Answer

About 500 megabytes

Answer

About 50 megabytes

Answer

About 5 megabytes

Question 29

What is "cloud computing" as a service, and what is one common example?

Accepted Answer

Renting computing power and software over the internet

Answer

Building your own computer from parts

Answer

Using only offline programs

Answer

Storing files only on a USB drive

Question 30

How does a hospital use big data and the cloud to help patients?

Accepted Answer

By storing and analyzing medical data to improve care

Answer

By replacing all doctors with robots

Answer

By deleting patient records to save space

Answer

By only using paper files

Test yourself