Consensus Mechanism Quiz

What is Proof of Work?

• A process for validating the accuracy of data in a database

• A type of mathematical puzzle used to encrypt data

• A method for verifying the authenticity of digital signatures

• A consensus mechanism used in blockchain technology to confirm transactions and produce new blocks in the chain.

How does Proof of Work secure a blockchain?

• By requiring participants to share personal information

• By requiring participants to solve complex mathematical puzzles

• By allowing unlimited access to the blockchain

• By using a centralized authority to validate transactions

What is the role of miners in Proof of Work?

• Validating and adding new blocks to the blockchain

• Selling cryptocurrency to investors

• Creating new digital wallets

• Writing and updating smart contracts

What is the main drawback of Proof of Work?

• Fast transaction speed

• Low energy consumption

• Easy to manipulate

• High energy consumption

Give an example of a cryptocurrency that uses Proof of Work.

• Litecoin

• Ripple

• Ethereum

• Bitcoin

What is Proof of Stake?

• Proof of Stake

• Proof of Work

• Proof of Authority

• Proof of Burn

How does Proof of Stake differ from Proof of Work?

• Proof of Stake relies on miners solving complex mathematical problems to validate transactions.

• Proof of Stake is the same as Proof of Work.

• Proof of Stake requires a central authority to validate transactions.

• Proof of Stake relies on validators staking their own cryptocurrency to validate transactions.

What is the role of validators in Proof of Stake?

• Validators are in charge of marketing and promoting the blockchain.

• Validators validate transactions and create new blocks on the blockchain.

• Validators are tasked with developing new software for the blockchain.

• Validators are responsible for maintaining the network's hardware infrastructure.

What is the main advantage of Proof of Stake over Proof of Work?

• Slower transaction speed

• More energy consumption

• Less energy consumption

• Higher security risk

Give an example of a cryptocurrency that uses Proof of Stake.

• Litecoin

• Ripple

• Bitcoin

• Ethereum 2.0