Blockchain and Cryptocurrency Knowledge

What is a smart contract?

• A self-executing contract with terms written into code.

• A physical document signed by parties.

• A verbal agreement between parties.

• A type of cryptocurrency.

What is the primary focus of decentralized finance (DeFi)?

• DeFi primarily focuses on utilizing traditional financial institutions.

• Decentralized finance (DeFi) aims to provide financial services without relying on centralized intermediaries.

• Decentralized finance (DeFi) has no specific focus and operates in a random manner.

• Traditional financial institutions are the main focus of DeFi operations.

What are Non-Fungible Tokens (NFTs) and how do they differ from cryptocurrencies?

• NFTs are unique digital assets representing ownership of specific items, while cryptocurrencies are fungible digital currencies.

• NFTs are interchangeable digital assets like cryptocurrencies.

• NFTs are physical assets, while cryptocurrencies are digital assets.

How does blockchain technology ensure security and transparency in transactions?

• Blockchain technology relies on a single centralized authority to verify transactions

• Blockchain technology allows any user to modify past transactions without detection

• Blockchain technology uses cryptographic techniques to create a decentralized and immutable ledger, where transactions are verified by multiple nodes in the network, ensuring security and transparency.

• Blockchain technology encrypts all transaction data, making it impossible to verify

What is the role of cryptocurrency in the blockchain ecosystem?

• Cryptocurrency facilitates transactions and incentivizes network participants within the blockchain ecosystem.

• Cryptocurrency is used for data storage in the blockchain ecosystem.

• Cryptocurrency is responsible for maintaining physical servers in the blockchain ecosystem.

• Cryptocurrency is used for marketing purposes within the blockchain ecosystem.

Real-world use case of blockchain technology

• Supply chain management

• Cryptocurrency mining

• Weather forecasting

• Online shopping

What programming language is commonly used to write smart contracts?

• Solidity

• Java

• C++

• Python

What are the benefits of using decentralized finance platforms?

• Benefits include increased financial inclusion, lower fees, enhanced privacy, improved security, and permissionless access to financial services.

• Decreased financial inclusion and higher fees

• Reduced privacy and compromised security

• Limited access to financial services with permissioned entry

How are NFTs created and what makes them unique?

• NFTs are created by drawing on a whiteboard and taking a picture. Each NFT is unique due to its hand-drawn design and background.

• NFTs are created by printing physical assets on paper, typically using ink. Each NFT is unique due to its distinct color and texture.

• NFTs are created by sending emails with attached files. Each NFT is unique due to its different file format and size.

• NFTs are created by minting digital assets on a blockchain, typically using smart contracts. Each NFT is unique due to its distinct metadata and ownership recorded on the blockchain.

What is the difference between a public blockchain and a private blockchain?

• Public blockchains are open to anyone, while private blockchains restrict access to a specific group.

• Public blockchains have faster transaction speeds compared to private blockchains.

• Private blockchains are decentralized, while public blockchains are centralized.