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Basic Concepts of Cryptocurrencies

Total questions: 10

Worksheet time: 10mins

Name
Class
Date
1.

What is the main purpose of cryptocurrencies?

a)

To allow people to have direct control over their savings, without relying on financial intermediaries.

b)

To provide a speculative and profitable investment opportunity.

c)

To create a decentralized economy, controlled by governments and banks.

d)

To increase the supply of currency in the market.

2.

Who introduced the concept of "blind signature" in 1982?

a)

Wei Dai.

b)

Cyberpunk movement.

c)

David Chaum.

d)

Crypto-Anarchists.

3.

What are some examples of types of tokens?

a)

Bitcoin and Ethereum.

b)

ERC-20 and BEP-20.

c)

ICO and STO.

d)

Solana and Cardano.

4.

When were cryptocurrencies born?

a)

2004.

b)

2000.

c)

2010.

d)

2008.

5.

What is the purpose of blockchain technology in cryptocurrencies?

a)

To secure financial transactions.

b)

To prove ownership of currency.

c)

To prevent retroactive changes to records.

d)

All of the above.

6.

Why is blind signature system useful for anonymous payments?

a)

It requires the use of intermediaries such as banks to verify transactions.

b)

It allows parties to exchange information without revealing confidential information.

c)

It encrypts all transaction details, making them untraceable.

d)

It eliminates the need for traditional payment methods like credit cards.

7.

What is a hard fork in the context of cryptocurrencies?

a)

A temporary fork of the blockchain.

b)

A change in the software of an existing cryptocurrency.

c)

A permanent fork of the blockchain

d)

A process of increasing the block size limit.

8.

Which type of cryptocurrency operates on its own blockchain network?

a)

Coins.

b)

Tokens.

c)

Both coins and tokens.

d)

None of the above.

9.

What is the role of cryptocurrency exchanges?

a)

To buy, sell and trade cryptocurrencies.

b)

To regulate security and trading fees.

c)

To create new cryptocurrencies.

d)

To mine new units of currency.

10.

What is the dining cryptographers problem?

a)

A classic example of multi-party cryptography.

b)

An encryption algorithm used in b-money system.

c)

A type of encryption used by cyberpunk activists.

d)

A protocol for anonymous voting.