Litle surprise

What is a blockchain?

• A decentralized digital ledger

• A type of cryptocurrency

• A new social media platform

• A type of computer virus

What is a smart contract?

• A self-executing contract with the terms of the agreement between buyer and seller being directly written into lines of code

• A legal document signed by both parties

• An agreement made verbally

• A type of computer program

What is the role of a miner in a blockchain network?

• To validate transactions and add them to the blockchain

• To create new cryptocurrencies

• To regulate the value of existing cryptocurrencies

• To design new blockchain algorithms

What is the purpose of a consensus algorithm in blockchain technology?

• To achieve agreement among network participants on which block is added next to the chain

• To keep the blockchain private and inaccessible to others

• To increase the complexity of mining

• To prevent the use of smart contracts

What is the significance of a public key in blockchain technology?

• It is used to encrypt data and ensure secure transactions

• It is a unique identifier for each block in the chain

• It is a type of consensus algorithm

• It is used to create new cryptocurrencies

How does a blockchain ensure immutability of data?

• By linking each block to the previous one using cryptographic hashes

• By allowing miners to modify the data in each block

• By encrypting the entire blockchain network

• By periodically deleting old data from the chain

What is the role of a node in a blockchain network?

• To maintain a copy of the blockchain and validate transactions

• To create new blocks and add them to the chain

• To regulate the value of cryptocurrencies

• To design new consensus algorithms

What is the role of a validator in a blockchain network?

• To verify transactions and ensure their accuracy

• To create new cryptocurrencies

• To regulate the value of existing cryptocurrencies

• To design new blockchain algorithms

How does a blockchain achieve decentralization?

• By distributing copies of the ledger across multiple nodes

• By centralizing all data on a single server

• By encrypting the entire blockchain network

• By allowing only one node to validate transactions