WorksheetsIGCSE Computer Science Digital Currency
Total questions: 96
Worksheet time: 48mins
What is the definition of Digital Currency?
A form of currency that is available only in digital or electronic form, and not in physical form.
A type of currency that is only used in physical transactions.
A traditional form of currency used in ancient times.
A currency that is only used in barter systems.
The difference between physical money and digital money is:
Physical money is tangible, while digital money is intangible.
Physical money is intangible, while digital money is tangible.
Both are tangible.
Both are intangible.
Digital currencies work by using a technology called blockchain, which is a decentralized ledger that records all transactions across a network. What is the technology used by digital currencies to record transactions?
Blockchain
Cryptocurrency
Digital Wallet
Smart Contract
Which of the following is a type of digital currency?
Cryptocurrency
Paper Money
Gold
Silver
An example of a Central Bank Digital Currency (CBDC) is:
Bitcoin
Ethereum
Digital Yuan
Litecoin
Which of the following is an example of E-wallets & Mobile Payments?
PayPal
Bitcoin
Ethereum
USDT
What are Stablecoins?
A type of cryptocurrency designed to have a stable value
A type of stock with fluctuating value
A type of bond with fixed interest
A type of commodity with variable price
What is Blockchain?
A type of cryptocurrency
A digital ledger technology
A programming language
A type of database management system
How does blockchain secure transactions?
By using cryptographic techniques to ensure data integrity and authenticity
By storing data in a centralized database
By allowing anyone to edit transaction records
By relying on a single point of control
What is the difference between Public and Private Blockchains?
Public blockchains are decentralized and open to anyone, while private blockchains are restricted and require permission to join.
Public blockchains are faster and more efficient than private blockchains.
Public blockchains are used for financial transactions, while private blockchains are used for data storage.
Public blockchains are more secure than private blockchains.
The role of miners and validators in blockchain is to:
Create new blocks and validate transactions
Design the blockchain architecture
Provide user interfaces for blockchain applications
Manage blockchain marketing strategies
The introduction to Bitcoin and Ethereum is about:
The history and development of cryptocurrencies
The technical specifications of Bitcoin and Ethereum
The impact of cryptocurrencies on global economy
The comparison between Bitcoin and Ethereum
What are Mining and Transactions in the context of cryptocurrencies?
Mining is the process of creating new coins, and transactions are the transfer of coins between users.
Mining is the transfer of coins between users, and transactions are the creation of new coins.
Mining and transactions are both processes of transferring coins between users.
Mining and transactions are unrelated to cryptocurrencies.
Cryptocurrency wallets work by:
Storing physical currency
Managing private and public keys
Printing cryptocurrency
Exchanging cryptocurrency for cash
What is decentralization in cryptocurrency?
A process of centralizing control over cryptocurrency networks
A method of distributing control and decision-making away from a central authority
A technique for increasing the value of cryptocurrencies
A strategy for reducing the number of cryptocurrency users
What are the advantages of Digital Currency?
Increased transaction speed and lower costs
Decreased security and privacy
Limited accessibility and usage
Higher inflation rates
Which of the following is an advantage of digital currency?
Slower transactions
Higher transaction costs
Borderless payments
Less security
What are some risks and disadvantages of digital currency?
Lack of regulation and potential for fraud
Unlimited supply leading to inflation
Physical damage to currency
Increased transaction times
Which of the following is a risk associated with digital currency?
Stability in prices
Hacking and Cybersecurity Risks
Strong regulation in all countries
No fraud in digital payments
Fill in the blank: Digital wallets help to ______ and send digital currency.
store
transfer
withdraw
exchange
Which of the following is an example of a digital wallet?
PayPal
Google Pay
Apple Pay
All of the above
The role of QR codes and NFC in digital payments is to:
facilitate secure and convenient transactions
provide entertainment content
enhance social media interactions
improve battery life of devices
Fill in the blank: ______ and Hashing are used in transactions for security in digital currency.
Encryption
Decryption
Compression
Encoding
What is Two-Factor Authentication (2FA) used for in digital wallets?
To enhance security by requiring two forms of verification
To simplify the login process
To store digital currencies
To connect multiple devices
What are some legal and ethical issues related to digital currency?
Privacy concerns and regulatory compliance
Environmental impact and energy consumption
Security risks and fraud
All of the above
Fill in the blank: The adoption of Central Bank Digital Currency (CBDC) is part of the ______ of digital currency.
adoption
rejection
neglect
abandonment
True or False: Blockchain technology provides security, but there are risks like hacking and fraud.
True
False
What is one advantage of digital currency in terms of security?
A) Risk of hacking & cyber attacks
B) Uses encryption & blockchain for security
C) Used in illegal activities
D) Some networks can have delays
Which of the following is a disadvantage of digital currency related to transaction speed?
A) Faster payments compared to banks
B) Some networks can have delays
C) Allows privacy in transactions
D) Lower transaction fees compared to banks
How does digital currency provide anonymity?
Used in illegal activities
Allows privacy in transactions
Can be used worldwide
Not accepted everywhere
What is a cost efficiency advantage of digital currency?
Some crypto exchanges charge high fees
Lower transaction fees compared to banks
Risk of hacking & cyber attacks
Not accepted everywhere
What is a disadvantage of digital currency in terms of global transactions?
Can be used worldwide, no currency exchange needed
Not accepted everywhere
Faster payments compared to banks
Uses encryption & blockchain for security
Scenario 1: Buying Coffee with Cryptocurrency Situation: David uses Bitcoin to pay for his morning coffee. However, the transaction takes longer than expected, and he is late for work. Pros & Cons ✅ Pros: Fast, contactless payment, secure. ❌ Cons: High transaction fees, slow processing time for some blockchains. Question: Why did the transaction take so long?
Bitcoin transactions depend on network congestion.
David used the wrong wallet.
The coffee shop's internet was down.
David didn't have enough Bitcoin.
Using digital currency is cheaper than traditional remittance services.
True
False
Can John get his money back?
Yes, John can get his money back.
No, John cannot get his money back.
It depends on the situation.
John has already received his money back.
What should Jake do to manage the risk of price volatility?
Invest in a diversified portfolio
Ignore market trends
Rely solely on one type of investment
Avoid investing altogether
How can Jake prevent loss due to price drops?
By investing in fixed assets
By using stop-loss orders
By diversifying his portfolio
By increasing his savings
Which of the following are signs of a crypto scam?
Guaranteed high returns with little risk
Lack of transparency and unclear business model
Pressure to invest quickly without time to research
All of the above
Scenario 1: Can he automate crypto payments? Situation: Sam wants to automate crypto payments. Answer: Yes, using a crypto payment service that allows subscriptions. Resolution: Sam should use BitPay or similar services that allow recurring payments.
Yes, using a crypto payment service that allows subscriptions.
No, it's not possible to automate crypto payments.
Only with manual intervention each time.
Only for one-time payments.
Buying property with crypto has both pros and cons. Which of the following is a pro of using crypto for property purchase?
Lower transaction fees
Higher transaction fees
Increased regulation
Limited market acceptance
Is it legal to buy real estate with Bitcoin?
Yes, it is legal to buy real estate with Bitcoin.
No, it is illegal to buy real estate with Bitcoin.
It depends on the country's regulations.
Bitcoin cannot be used for real estate transactions.
Lily can use crypto safely by:
Using strong, unique passwords for her crypto accounts
Sharing her private keys with trusted friends
Ignoring software updates for her crypto wallet
Using public Wi-Fi to access her crypto accounts
Can Tom get a tax deduction?
Yes, if he meets the eligibility criteria.
No, he cannot get a tax deduction.
It depends on his income level.
Only if he has dependents.
Are crypto ATMs worth it?
Yes, they offer convenience and accessibility.
No, they have high fees and limited functionality.
It depends on individual needs and circumstances.
They are a scam and should be avoided.
Is crypto cashback better than regular rewards?
Yes
No
It can be if prices rise, but it’s risky.
What should Anna do to ensure she doesn't lose access to her crypto wallet?
Store her private keys securely
Share her private keys with friends
Ignore security updates
Use a weak password
What is Cryptocurrency?
A) A digital or virtual currency secured by cryptography.
B) A physical currency used in traditional banking.
C) A type of stock market investment.
D) A government-issued currency.
What is Blockchain?
A centralized ledger controlled by a single entity.
A decentralized, distributed ledger that records transactions across a network of computers.
A type of cryptocurrency.
A physical chain used for security.
Fill in the blank: _______ (BTC) is the first and most well-known cryptocurrency.
Bitcoin
Ethereum
Ripple
Litecoin
Fill in the blank: _______ refers to any cryptocurrency other than Bitcoin.
Altcoin
Bitcoin
Cryptocurrency
Blockchain
Fill in the blank: _______ Currency is traditional government-issued money.
Fiat
Cryptocurrency
Digital
Virtual
Fill in the blank: _______ is a system where no single entity controls the network.
Decentralization
Centralization
Monopoly
Hierarchy
Fill in the blank: A _______ Ledger is a record of all cryptocurrency transactions that is publicly accessible.
Public
Private
Secure
Encrypted
Fill in the blank: A _______ is a digital tool that stores cryptocurrency.
wallet
key
account
ledger
Fill in the blank: A _______ Key is a cryptographic key that is shared publicly to receive funds.
Public
Private
Secret
Symmetric
Fill in the blank: A _______ Key is a secret key that gives access to a cryptocurrency wallet.
Private
Public
Shared
Master
Fill in the blank: A _______ Phrase is a series of words that can be used to recover a lost wallet.
Seed
Recovery
Mnemonic
Passphrase
A _______ Wallet is not connected to the internet.
Cold
Hot
Warm
Digital
A _______ Wallet is connected to the internet.
Hot
Cold
Hardware
Paper
Fill in the blank: A _______ Fee is a small fee paid to miners or validators for processing transactions.
Transaction
Service
Membership
Subscription
Fill in the blank: A _______ Fee is required to execute transactions on Ethereum.
Gas
Transaction
Service
Network
Fill in the blank: _______ is the process of verifying and adding transactions to the blockchain.
Mining
Staking
Hashing
Forking
Fill in the blank: _______ of Work is a consensus mechanism where miners solve complex puzzles to validate transactions.
Proof
Power
Piece
Part
Fill in the blank: _______ of Stake is a consensus mechanism where validators are chosen based on the amount of cryptocurrency they hold.
Proof
Power
Piece
Part
Fill in the blank: _______ is the process of locking up cryptocurrency to help secure a network and earn rewards.
Staking
Mining
Trading
Lending
Fill in the blank: A _______ Contract is a self-executing contract with the terms directly written into code.
Smart
Dumb
Traditional
Paper
Fill in the blank: An _______ is a platform where users buy, sell, and trade cryptocurrencies.
Exchange
Marketplace
Wallet
Bank
Fill in the blank: _______ is the ease with which an asset can be converted into cash without affecting its price.
Liquidity
Volatility
Profitability
Stability
Fill in the blank: _______ Cap is the total value of a cryptocurrency.
Market
Capital
Equity
Asset
Fill in the blank: _______ is a slang term for holding onto cryptocurrency for the long term.
HODL
SELL
TRADE
FLIP
Fill in the blank: _______ is the fear that causes investors to buy into a trend to avoid missing potential gains.
FOMO (Fear of Missing Out)
YOLO (You Only Live Once)
HODL (Hold On for Dear Life)
BTFD (Buy The Dip)
FUD (Fear, Uncertainty, and Doubt) in cryptocurrency refers to:
A strategy to influence perception by spreading negative information.
A type of cryptocurrency.
A blockchain technology.
A government regulation.
The term 'Pump and Dump' in the context of cryptocurrency refers to:
A strategy where investors buy a cryptocurrency to increase its price and then sell it off quickly.
A method of long-term investment in cryptocurrencies.
A technique used to stabilize the price of a cryptocurrency.
A legal practice of trading cryptocurrencies.
A Bull Market in cryptocurrency is characterized by:
a period of declining prices
a period of rising prices
a period of stable prices
a period of high volatility
Define Bear Market in the context of cryptocurrency.
A market condition where prices are rising or are expected to rise.
A market condition where prices are falling or are expected to fall.
A market condition where prices remain stable over a long period.
A market condition characterized by high volatility and rapid price changes.
In cryptocurrency markets, a 'Whale' is referred to as:
A small investor
A large investor
A type of cryptocurrency
A trading platform
A Rug Pull in the context of cryptocurrency scams is:
a legitimate investment strategy.
a type of scam where developers abandon a project and run away with investors' funds.
a method of increasing the value of a cryptocurrency.
a government regulation on cryptocurrencies.
Phishing in cryptocurrency security refers to:
A type of scam where attackers impersonate legitimate entities to steal sensitive information.
A method of mining cryptocurrency using phishing techniques.
A legal process of acquiring cryptocurrency through phishing.
A security protocol to protect against phishing attacks.
A 51% Attack in blockchain technology is:
a situation where a single miner or group of miners control more than 50% of the network's mining power, allowing them to manipulate transactions.
a method of encrypting data to ensure privacy and security.
a type of consensus algorithm used to validate transactions.
a process of creating new blocks in the blockchain.
Double Spending in cryptocurrency refers to:
The ability to spend the same cryptocurrency more than once.
The process of mining new cryptocurrency.
The act of exchanging cryptocurrency for goods and services.
The method of securing cryptocurrency transactions.
A Dusting Attack in cryptocurrency is:
a method to clean up old transactions.
a type of cyber attack where small amounts of cryptocurrency are sent to wallets to break the privacy of users.
a way to increase the value of a cryptocurrency by reducing its supply.
a technique to improve the speed of blockchain transactions.
DeFi (Decentralized Finance) refers to:
A traditional banking system
A centralized financial system
A decentralized financial system
A government-regulated financial system
NFT (Non-Fungible Token) is defined as:
A type of cryptocurrency used for transactions on the blockchain.
A unique digital asset verified using blockchain technology.
A fungible token that can be exchanged for goods and services.
A physical token that represents ownership of a real-world asset.
A DAO (Decentralized Autonomous Organization) is:
A centralized organization controlled by a single entity
A decentralized organization governed by smart contracts
An organization that operates without any rules or regulations
A traditional company with a board of directors
Stablecoin in cryptocurrency is a type of digital currency that:
is highly volatile and fluctuates in value.
is pegged to a stable asset like fiat currency.
operates without any underlying asset.
is used exclusively for illegal transactions.
What are Layer 2 Solutions in blockchain technology?
Layer 2 solutions are protocols built on top of a blockchain to improve its scalability and efficiency.
Layer 2 solutions are the base layer of blockchain technology.
Layer 2 solutions are unrelated to blockchain technology.
Layer 2 solutions are used to decrease the security of blockchain networks.
Tokenomics in the context of cryptocurrency is defined as:
The study of the economic model and monetary policy of a cryptocurrency.
The process of mining new tokens in a blockchain network.
The technology behind blockchain and its security features.
The legal regulations governing cryptocurrency exchanges.
An Airdrop in cryptocurrency is:
a method of distributing tokens to a large number of wallet addresses for free or as a reward.
a type of cryptocurrency exchange platform.
a security measure to protect digital assets.
a process of mining new cryptocurrencies.
A Liquidity Pool in decentralized trading is:
a collection of funds locked in a smart contract to facilitate trading
a type of cryptocurrency wallet
a centralized exchange platform
a method for mining new cryptocurrencies
What is Yield Farming in DeFi platforms?
A method to earn rewards by providing liquidity to DeFi platforms
A type of traditional farming using blockchain technology
A process of mining cryptocurrencies using renewable energy
A way to trade stocks on decentralized exchanges
The function of a Cross-Chain Bridge in cryptocurrency is to:
facilitate transactions between different blockchain networks
mine new cryptocurrencies
provide security for blockchain networks
create new blockchain networks
What does KYC stand for in cryptocurrency regulations?
Know Your Customer
Keep Your Coins
Know Your Coin
Keep Your Customer
What is the purpose of AML in the context of cryptocurrency?
To prevent money laundering through crypto.
To increase the value of cryptocurrencies.
To facilitate faster transactions.
To ensure anonymity in transactions.
What does CBDC stand for?
Central Bank Digital Currency
Central Bank Direct Credit
Central Bureau of Digital Commerce
Currency Banking Digital Code
What is the role of the SEC in cryptocurrency?
The U.S. regulatory body overseeing crypto securities.
A global organization that sets cryptocurrency prices.
A private company that invests in cryptocurrencies.
A non-profit organization promoting blockchain technology.
What is an ICO in the context of cryptocurrency?
A fundraising method for new cryptocurrency projects.
A type of cryptocurrency wallet.
A blockchain consensus algorithm.
A cryptocurrency exchange platform.
