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Techno Quiz 9

Total questions: 150

Worksheet time: 1hrs 15mins

Name
Class
Date
1.

A block in a blockchain mainly contains:

a)

Images only

b)

Transaction data, timestamp, and hash

c)

CPU instructions

d)

Antivirus settings

2.

A blockchain hash function primarily:

a)

Encrypts Wi-Fi signals

b)

Creates a unique fingerprint for data

c)

Compresses images

d)

Expands file size

3.

What ensures that past blockchain data cannot be altered?

a)

Paper backups

b)

Hash linking between blocks

c)

USB locks

d)

Router firewalls

4.

Cryptocurrency is powered by:

a)

Magnetic tapes

b)

Blockchain technology

c)

Barcode systems

d)

Wi-Fi extenders

5.

A decentralized system means:

a)

One authority controls everything

b)

Many nodes share control

c)

Only the government manages data

d)

Only satellites store data

6.

Mining in blockchain refers to:

a)

Digging for data

b)

Solving complex mathematical problems

c)

Backing up signals

d)

Shutting down servers

7.

Proof of Work involves:

a)

Manual approval

b)

Solving computational puzzles

c)

Voting

d)

Scanning QR codes

8.

Smart contracts are:

a)

Verbal agreements

b)

Self-executing programs on a blockchain

c)

Notarized documents

d)

Cryptocurrency wallets

9.

Which blockchain is known for smart contracts?

a)

Ethereum

b)

Wi-Fi Alliance

c)

Windows Network

d)

Bluetooth Mesh

10.

A public blockchain allows:

a)

Only one user

b)

Everyone to participate

c)

Only the owner to read

d)

No storage

11.

A private blockchain is controlled by:

a)

Volunteer miners

b)

A specific organization

c)

Random websites

d)

Gamers

12.

A blockchain node is:

a)

A printer

b)

A participant storing and validating transactions

c)

A type of browser

d)

A USB hub

13.

Consensus mechanisms guarantee:

a)

Data inconsistency

b)

Agreement among nodes

c)

Battery protection

d)

Wi-Fi stability

14.

Double spending refers to:

a)

Buying twice

b)

Using the same digital coin more than once

c)

Paying in cash and card

d)

Splitting a wallet in two

15.

One advantage of blockchain is:

a)

Centralized control

b)

Transparency

c)

Unlimited storage

d)

High physical durability

16.

Blockchain is MOST used in:

a)

Manual farming

b)

Financial transactions

c)

Woodcraft

d)

Sewing

17.

Blockchain transactions are verified by:

a)

Password resets

b)

Network nodes

c)

Office clerks

d)

Wi-Fi routers

18.

A wallet in blockchain stores:

a)

Physical coins

b)

Private and public keys

c)

USB data

d)

Router passwords

19.

Private keys must be kept:

a)

Written on walls

b)

Secret and secure

c)

Shared with everyone

d)

Uploaded publicly

20.

The first blockchain was used in:

a)

Google Drive

b)

Bitcoin

c)

Instagram

21.

Blockchain improves security by using:

a)

Firewalls only

b)

Cryptography

c)

Color-coded logs

d)

USB authentication

22.

A fork in blockchain refers to:

a)

Physical tool

b)

Protocol change

c)

File deletion

d)

Node reset

23.

Tokenization means converting assets into:

a)

Coins

b)

Digital tokens

c)

Documents

d)

Flyers

24.

A blockchain explorer allows users to:

a)

Send emails

b)

View blockchain transactions

c)

Upgrade Wi-Fi

d)

Format disks

25.

Cryptographic hashing ensures:

a)

Reversible data

b)

One-way transformation

c)

Adjustable fingerprints

d)

Unlimited storage

26.

A DApp (Decentralized App) runs on:

a)

Blockchain networks

b)

MS Excel

c)

Photo editors

d)

USB drives

27.

Mining difficulty refers to:

a)

Ease of installing apps

b)

Complexity of PoW puzzles

c)

Keyboard speed

d)

Number of monitors

28.

A blockchain block cannot be changed because of:

a)

USB encryption

b)

Linked hashes

c)

Malware protection

d)

Antivirus updates

29.

A private blockchain is MOST used by:

a)

Random people

b)

Companies and organizations

c)

Schools only

d)

Gamers

30.

A blockchain ledger is stored:

a)

In one database

b)

On multiple nodes

c)

On a printer

d)

In a pocket

31.

“Immutable” means:

a)

Editable

b)

Cannot be changed

c)

Read-only until rebooted

d)

Convertible to analog

32.

Blockchain encryption protects:

a)

Cookies

b)

Transactions

c)

Storage bins

d)

Screens

33.

One major challenge in blockchain is:

a)

Too little electricity

b)

High computational requirements

c)

Not enough wires

d)

Lack of colors in UI

34.

Blockchain provides transparency by:

a)

Hiding logs

b)

Allowing anyone to view transactions

c)

Removing timestamps

d)

Deleting old blocks

35.

A hash collision is when:

a)

Two hashes match accidentally

b)

Two nodes shut down

c)

A server crashes

d)

A wallet empties

36.

Mining pools allow miners to:

a)

Swim digitally

b)

Combine computing power

c)

Share cookies

d)

Reset passwords

37.

A “block reward” is given to:

a)

The blockchain creator

b)

The miner who solves the block

c)

Anyone online

d)

Wallet owners

38.

Distributed ledgers are different from standard databases because they:

a)

Work offline only

b)

Are shared among many participants

c)

Store pictures only

d)

Remove timestamps

39.

Blockchain is highly resistant to hacking because:

a)

All data is offline

b)

Data is distributed and cryptographically linked

c)

It uses random passwords only

d)

It has no internet access

40.

Virtual Reality creates:

a)

Physical buildings

b)

A fully immersive digital environment

c)

Hand-drawn animations

d)

Windows for laptops

41.

Augmented Reality overlays:

a)

Sound effects

b)

Digital elements onto real-world views

c)

Paper filters

d)

Clouds on images

42.

A VR headset works primarily through:

a)

Optical immersion

b)

Audio filtering

c)

Solar reflection

d)

Magnetic pulses

43.

AR is commonly used in smartphones through:

a)

Fingerprint sensors

b)

Camera-based overlays

c)

Gyroscope deletion

d)

Air pressure meters

44.

VR is MOST used for:

a)

Immersive simulations

b)

Filing documents

c)

Spreadsheet editing

d)

Radio tuning

45.

A major challenge of VR is:

a)

Motion sickness

b)

Color blindness

c)

Sound lag

d)

RAM freezing

46.

AR technology is commonly seen in:

a)

Google Maps live view

b)

Old telegraphs

c)

Typewriter ribbons

d)

Film projectors

47.

Mixed Reality (MR) combines:

a)

VR and AR

b)

PDF and DOCX

c)

HTML and CSS

d)

RGB and CMYK

48.

VR controllers track:

a)

Smell

b)

Hand motion

c)

Battery status only

d)

Magnetic fields

49.

AR glasses display:

a)

Pure black screens

b)

Digital data on transparent lenses

c)

Only video games

d)

3D movies only

50.

A major use of AR in education is:

a)

3D interactive visualization

b)

Dusting chalkboards

c)

Replacing books with posters

d)

Black-and-white diagrams only

51.

VR is frequently used in medical training because it:

a)

Reduces oxygen use

b)

Simulates surgeries safely

c)

Minimizes Wi‑Fi data

d)

Prevents computer viruses

52.

AR differs from VR because AR:

a)

Replaces reality

b)

Adds digital elements to reality

c)

Uses headsets only

d)

Removes real objects

53.

A key sensor used in VR/AR systems is the:

a)

Gyroscope

b)

Smoke detector

c)

Thermometer

d)

Altimeter

54.

VR content requires:

a)

360° rendering

b)

Quick typing skills

c)

Keyboard passwords

d)

2D blueprint scanning

55.

AR is commonly used in gaming via:

a)

Pokémon GO

b)

Solitaire

c)

Chess boards

d)

Minesweeper

56.

VR immersion is improved by:

a)

Haptic feedback

b)

Keyboard sound

c)

Mouse clicks

d)

Paper texture

57.

A VR-ready computer typically needs:

a)

Strong GPU

b)

Dot-matrix printer

c)

USB fan

d)

DVD drive

58.

AR is useful in navigation because it:

a)

Adds visual guidance on camera view

b)

Removes road signs

c)

Uses Morse code

d)

Prints directions

59.

VR is commonly used for exposure therapy in psychology because:

a)

It simulates safe controlled environments

b)

It blocks all sensory input from patients

c)

It eliminates the need for therapist supervision

d)

It increases exposure to uncontrolled stimuli

60.

One limitation of VR is:

a)

Requires powerful hardware

b)

No visual display

c)

No audio support

d)

Only works underwater

61.

AR glasses require:

a)

Digital projection

b)

Discrete math

c)

Physical ink

d)

Heat sensors

62.

VR headsets track:

a)

Head position and orientation

b)

Air humidity

c)

Touchscreen brightness

d)

Internet latency

63.

VR is helpful in architecture because it:

a)

Allows full 3D walkthroughs

b)

Creates wood models

c)

Draws blueprints automatically

d)

Removes building plans

64.

AR is used in retail for:

a)

Virtual clothing try-ons

b)

Manual fitting rooms

c)

Price guessing

d)

Chalkboard menus

65.

VR environments must minimize:

a)

Latency

b)

Screen size

c)

Pixel colors

d)

Speaker volume

66.

A fully immersive VR experience requires:

a)

Headset + motion tracking

b)

Scanner

c)

Printer

d)

Light bulbs

67.

AR enhances learning by:

a)

Overlaying digital models

b)

Removing textbooks

c)

Stopping memory

d)

Hiding diagrams

68.

VR can simulate hazardous conditions for:

a)

Safety training

b)

Writing essays

c)

Homework

d)

Painting

69.

AR is increasingly used in repairing machinery because it:

a)

Shows real-time instructions

b)

Disconnects tools

c)

Removes user control

d)

Prints manuals

70.

5G stands for:

a)

Fifth Generation wireless technology

b)

Five Gigabytes per second

c)

Fiber-Gated communication

d)

Fast Global network

71.

A major feature of 5G is:

a)

Extremely low latency

b)

High water resistance

c)

Zero data encryption

d)

Unstable speeds

72.

Compared to 4G, 5G provides:

a)

Higher speed and capacity

b)

Lower frequency only

c)

Shorter battery life always

d)

Less connectivity

73.

The fastest part of 5G uses:

a)

Millimeter waves

b)

Ocean currents

c)

Magnetic fields

d)

Light bulbs

74.

A challenge of millimeter-wave 5G is:

a)

Easily blocked by obstacles

b)

Unlimited range

c)

Requires no towers

d)

Works underground

75.

Massive MIMO improves:

a)

Number of antennas at towers

b)

Keyboard speed

c)

Screen resolution

d)

Battery voltage

76.

5G enables the growth of:

a)

IoT devices

b)

Chalkboards

c)

VHS tapes

d)

Paper routers

77.

Edge computing brings:

a)

Processing closer to users

b)

More wires

c)

Fewer networks

d)

Lower battery voltage

78.

5G is crucial for:

a)

Self-driving cars

b)

Typewriters

c)

Vinyl records

79.

Beamforming helps 5G by:

a)

Directing signals more accurately

b)

Lowering frequencies

c)

Decreasing accuracy

d)

Increasing static

80.

Network slicing allows:

a)

Custom virtual networks

b)

Cutting cables

c)

Splitting bandwidth manually

d)

Turning off routers

81.

5G IoT devices benefit from:

a)

Low latency

b)

Manual updates

c)

Wooden cases

d)

Limited signals

82.

A drawback of 5G infrastructure is:

a)

Many small-cell towers needed

b)

High plastic use

c)

Slow CPU

d)

Oversized routers

83.

Future networks aim for:

a)

6G ultra-low latency

b)

Replacing radio waves

c)

Wired-only devices

d)

More analog tools

84.

5G improves online gaming by:

a)

Reducing lag

b)

Increasing shadows

c)

Lowering resolution

d)

Blocking signals

85.

Autonomous drones rely on 5G for:

a)

Real-time control

b)

Storing water

c)

Growing crops

d)

Faster charging

86.

5G improves VR by:

a)

Higher bandwidth for streaming

b)

Lowering brightness

c)

Removing 3D graphics

d)

Slowing apps

87.

Spectrum refers to:

a)

Range of radio frequencies

b)

Color palettes

c)

Screen sizes

d)

Battery power

88.

Massive device connections in 5G help:

a)

Smart cities

b)

Stone bridges

c)

Paper logs

d)

Fax machines

89.

5G networks require:

a)

Dense cell deployment

b)

No towers

c)

Large satellites only

d)

Manual wiring

90.

Low-latency 5G supports:

a)

Remote surgery

b)

Slow downloads

c)

Analog photos

d)

Paper transmissions

91.

Future 6G networks may include:

a)

Terahertz communications

b)

Manual switches

c)

Wood antennas

d)

No connectivity

92.

5G speeds enable:

a)

Instant cloud file access

b)

Slower uploads

c)

Only SMS

d)

Text-only browsing

93.

IoT smart grids rely on:

a)

Real-time 5G updates

b)

Coal engines

c)

Paper meters

d)

Water clocks

94.

A major security concern in 5G is:

a)

Increased entry points for cyberattacks

b)

Too few users

c)

No internet use

d)

Lack of applications

95.

5G bandwidth allows streaming of:

a)

4K/8K videos

b)

Only audio

c)

Only text

d)

Only images

96.

Latency in 5G can be as low as:

a)

1 millisecond

b)

5 seconds

c)

10 minutes

d)

1 hour

97.

Network slicing separates networks based on:

a)

Specific service requirements

b)

Cable colors

c)

Router brands

d)

User age

98.

Future networks aim for ubiquitous:

a)

AI-driven connectivity

b)

Manual calculations

c)

Telegraph lines

99.

5G is critical for future innovations such as:

a)

Smart transportation and robotics

b)

Candle-powered machines

c)

Typing pools

d)

Fax automation

100.

Who is widely credited with inventing the telephone (1876 patent)?

a)

Elisha Gray

b)

Alexander Graham Bell

c)

Antonio Meucci

d)

Guglielmo Marconi

101.

Who developed the first practical incandescent light bulb?

a)

Nikola Tesla

b)

Hiram Maxim

c)

Thomas Edison

d)

Joseph Swan

102.

The alternating current (AC) induction motor was pioneered by:

a)

Michael Faraday

b)

Nikola Tesla

c)

James Clerk Maxwell

d)

Charles Steinmetz

103.

The first successful airplane flight (1903) is credited to:

a)

Glenn Curtiss

b)

Otto Lilienthal

c)

Wright brothers

d)

Igor Sikorsky

104.

Who invented the World Wide Web (1989–1991)?

a)

Marc Andreessen

b)

Tim Berners-Lee

c)

Vint Cerf

d)

Robert Kahn

105.

The smallpox vaccine was first developed by:

a)

Edward Jenner

b)

Louis Pasteur

c)

Alexander Fleming

d)

Jonas Salk

106.

Penicillin was discovered by:

a)

Robert Koch

b)

Alexander Fleming

c)

Joseph Lister

d)

Paul Ehrlich

107.

The first practical steam engine improvements (Newcomen’s engine redesigned) were made by:

a)

Denis Papin

b)

James Watt

c)

Richard Trevithick

d)

George Stephenson

108.

The moving assembly line for automobiles was perfected by:

a)

Ransom Olds

b)

Henry Ford

c)

Karl Benz

d)

Gottlieb Daimler

109.

The transistor (1947) was invented at Bell Labs by:

a)

Shockley, Bardeen, Brattain

b)

Noyce, Kilby, Grove

c)

Terman, Moore, Hoerni

d)

Atanasoff, Berry, Neumann

110.

The integrated circuit was independently invented by:

a)

Shannon & Turing

b)

Kilby & Noyce

c)

Ritchie & Thompson

d)

Wozniak & Jobs

111.

The programmable loom using punch cards was designed by:

a)

Charles Babbage

b)

Joseph-Marie Jacquard

c)

Herman Hollerith

d)

Ada Lovelace

112.

Who created the first practical telephone microphone (carbon transmitter) used in early telephony?

a)

Emile Berliner

b)

Thomas Edison

c)

Alexander Graham Bell

d)

Reginald Fessenden

113.

The first commercially successful photographic process (daguerreotype) was invented by:

a)

Louis Daguerre

b)

George Eastman

c)

Nicéphore Niépce

d)

John Herschel

114.

The first mechanical computer designs (Difference & Analytical Engines) were proposed by:

a)

George Boole

b)

Charles Babbage

c)

Alan Turing

d)

Konrad Zuse

115.

The concept of a stored-program computer was formalized by:

a)

Claude Shannon

b)

John von Neumann

c)

Norbert Wiener

d)

Grace Hopper

116.

Who pioneered packet switching (core concept of the internet)?

a)

Robert Kahn

b)

Vint Cerf

c)

Paul Baran

d)

Tim Berners-Lee

117.

The first electronic general-purpose computer in the U.S., ENIAC, was built by:

a)

Mauchly & Eckert

b)

Atanasoff & Berry

c)

Zuse & Schreyer

d)

Aiken & Hopper

118.

The first working programmable computer (Z3, 1941) was built by:

a)

John von Neumann

b)

Konrad Zuse

c)

Alan Turing

d)

John Atanasoff

119.

The first practical photograph (heliography) is credited to:

a)

Eadweard Muybridge

b)

Nicéphore Niépce

c)

Louis Daguerre

d)

William Fox Talbot

120.

The polio vaccine (1950s) was developed by:

a)

Robert Koch

b)

Jonas Salk

c)

Albert Sabin

d)

Elie Metchnikoff

121.

The telephone exchange switch (Strowger switch) was invented by:

a)

Almon Brown Strowger

b)

Guglielmo Marconi

c)

Hedy Lamarr

d)

Lee De Forest

122.

The vacuum tube triode (amplifier) was invented by:

a)

John Ambrose Fleming

b)

Lee De Forest

c)

Edwin Armstrong

d)

Philo Farnsworth

123.

The first electronic television image transmission is credited to:

a)

John Logie Baird

b)

Philo Farnsworth

c)

Vladimir Zworykin

d)

Paul Nipkow

124.

The first practical refrigerator using vapor compression was pioneered by:

a)

Willis Carrier

b)

Jacob Perkins

c)

Ferdinand Carré

d)

Carl von Linde

125.

Air conditioning (modern electrical AC system) was designed by:

a)

Nikola Tesla

b)

Willis Carrier

c)

James Watt

d)

George Westinghouse

126.

The safety elevator with a braking system was introduced by:

a)

Elisha Otis

b)

Isambard Kingdom Brunel

c)

John Roebling

d)

Alexander Lyman Holley

127.

The first practical motion picture camera & projector (Kinetoscope/Kinetograph work) is tied to:

a)

Lumière brothers

b)

Eadweard Muybridge

c)

Thomas Edison & W.K.L. Dickson

d)

Georges Méliès

128.

The first successful helicopter (VS-300) pioneer was:

a)

Igor Sikorsky

b)

Juan de la Cierva

c)

Glenn Curtiss

d)

Otto Lilienthal

129.

The first commercially successful typewriter was patented by:

a)

Christopher Latham Sholes

b)

Remington & Sons

c)

William Austin Burt

d)

James Hammond

130.

Modern radar system principles were developed significantly by:

a)

Karl Jansky

b)

Robert Watson-Watt

c)

Edwin Armstrong

d)

Fritz Zwicky

131.

The first practical nylon (synthetic polymer) was created by:

a)

Wallace Carothers

b)

Leo Baekeland

c)

Roy Plunkett

d)

John Wesley Hyatt

132.

Bakelite, an early plastic, was invented by:

a)

Leo Baekeland

b)

Wallace Carothers

c)

Charles Goodyear

d)

Alexander Parkes

133.

The first successful integrated email system "@" addressing convention was popularized by:

a)

Vint Cerf

b)

Ray Tomlinson

c)

Jon Postel

d)

Bob Metcalfe

134.

Ethernet networking was co-invented by:

a)

Bob Metcalfe & David Boggs

b)

Cerf & Kahn

c)

Ritchie & Thompson

d)

Knuth & Dijkstra

135.

The first successful photographic roll film and Kodak camera came from:

a)

George Eastman

b)

Edwin Land

c)

Louis Daguerre

d)

Étienne-Jules Marey

136.

Instant photography (Polaroid) was invented by:

a)

Harold Edgerton

b)

Edwin Land

c)

Ansel Adams

d)

George Eastman

137.

The first practical mechanical television (semaphoric scanning) was demonstrated by:

a)

Vladimir Zworykin

b)

John Logie Baird

c)

Philo Farnsworth

d)

Charles Francis Jenkins

138.

The first rechargeable lithium-ion battery (commercialized) is associated with:

a)

Akira Yoshino

b)

John Goodenough

c)

Stanley Whittingham

139.

The periodic table organizer and chemical classification pioneer was:

a)

John Dalton

b)

Dmitri Mendeleev

c)

Antoine Lavoisier

d)

J.J. Thomson

140.

The first practical sewing machine is credited to:

a)

Elias Howe

b)

Isaac Singer

c)

Walter Hunt

d)

Thimonnier

141.

The first practical telegraph was developed by:

a)

Samuel Morse

b)

Charles Wheatstone

c)

Joseph Henry

d)

Michael Faraday

142.

The dynamo (electrical generator) pioneering work is linked to:

a)

Hippolyte Pixii & Werner von Siemens

b)

Tesla & Westinghouse

c)

Ampère & Ørsted

d)

Faraday & Coulomb

143.

The geostationary communications satellite concept was publicized by:

a)

Arthur C. Clarke

b)

Robert Goddard

c)

Konstantin Tsiolkovsky

d)

Hermann Oberth

144.

The first practical safety razor was invented by:

a)

King C. Gillette

b)

Jacob Schick

c)

Alexandre Grellet

d)

Benjamin Huntsman

145.

The first practical ballpoint pen patent (1938) belongs to:

a)

John Loud

b)

László Bíró

c)

Parker & Waterman

d)

Marcel Bich

146.

The discovery of X-rays is credited to:

a)

Wilhelm Röntgen

b)

Henri Becquerel

c)

Marie Curie

d)

Niels Bohr

147.

The first practical digital camera prototype is associated with:

a)

George Smith

b)

Steven Sasson

c)

James Dyson

d)

Alan Sugar

148.

The invention of the modern vacuum cleaner (cyclone separation design) is tied to:

a)

Hubert Cecil Booth

b)

James Dyson

c)

William Hoover

d)

Daniel Hess

149.

Significant Inventions (51–100): UNIX (1969–1971), foundational to modern OSes, was created by:

a)

Larry Page & Sergey Brin

b)

Ken Thompson & Dennis Ritchie

c)

Bill Gates & Paul Allen

d)

Linus Torvalds & Guido van Rossum

150.

Significant Inventions (51–100): The C programming language was developed primarily by:

a)

Dennis Ritchie

b)

Bjarne Stroustrup

c)

James Gosling

d)

John Backus

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