How are blockchains used?

1. 1. What is a key factor for innovation in the blockchain space?

• • a) Cryptocurrency mining

• • b) Smart contracts

• • c) Digital assets

• • d) Blockchain hacking

2. 2. Which industry was mentioned as making blockchain a household term?

• • a) Healthcare

• • b) Supply chain

• • c) Cryptocurrency

• • d) Energy

3. 3. What are smart contracts in the context of blockchain?

• • a) Physical contracts stored on paper

• • b) Blockchain-based computer programs

• • c) Traditional financial agreements

• • d) Cryptocurrency exchanges

4. 4. In what field might a 51% attack pose a risk in blockchain applications?

• • a) Healthcare

• • b) Cryptocurrency

• • c) Media

• • d) Government operations

5. 5. What is mentioned as a potential consequence of a 51% attack?

• • a) Altering previous blocks on the chain

• • b) Mining new cryptocurrency

• • c) Ensuring blockchain security

• • d) Enhancing smart contracts

6. 6. For large networks like Bitcoin and Ethereum, a 51% attack is deemed:

• • a) Likely

• • b) Costly and difficult

• • c) Preventable

• • d) Inevitable

7. 7. What is a regulated way to invest in blockchain technology directly?

• • a) Purchasing NFTs

• • b) Investing in decentralized finance

• • c) Investing in stocks of blockchain companies

• • d) Mining cryptocurrencies

8. 8. What is mentioned as a potential risk when investing in the crypto world?

• • a) Stable prices

• • b) Regulated environment

• • c) Fraudulent activity

• • d) Predictable market trends