Proof of Stake Trivia Night

Which of the following is a key feature of Proof of Stake (PoS) blockchains?

• Use of computational power to validate transactions

• Use of stakes or ownership of cryptocurrencies to validate transactions

• Use of centralized authorities to validate transactions

• Use of transaction fees to validate transactions

In PoS, what is the purpose of staking?

• To earn interest on one's cryptocurrency holdings

• To participate in validating transactions on the network

• To mine new coins and earn rewards

• To trade cryptocurrencies with other users

What is the main advantage of PoS over Proof of Work (PoW) blockchains?

• Lower energy consumption and environmental impact

• Faster transaction confirmation times

• More secure network against attacks

• Greater decentralization and user participation

Which of the following cryptocurrencies currently uses a PoS consensus mechanism?

• Bitcoin

• Ethereum

• Ripple

• Litecoin

What is the term used to describe the process of selecting a validator in a PoS blockchain?

• Mining

• Staking

• Voting

• Nominating

What is the name of the first PoS blockchain, created in 2012?

• Bitcoin

• Ripple

• Peercoin

• Litecoin

What is the name of the algorithm used to randomly select validators in a PoS blockchain?

• SHA-256

• Scrypt

• Ethereum Virtual Machine (EVM)

• Proof of Stake Velocity (PoSV)

How does a validator's stake affect their chances of being selected to validate transactions in a PoS blockchain?

• The larger the stake, the greater the chance of being selected

• The smaller the stake, the greater the chance of being selected

• The stake has no effect on the selection process

• The selection process is completely random and not affected by the stake size

Which of the following is a disadvantage of PoS compared to PoW blockchains?

• Greater energy consumption and environmental impact

• Slower transaction confirmation times

• Less secure network against attacks

• Centralization of power among a small group of validators

What is the name of the cryptocurrency used as the native token in the Cardano blockchain?

• Ether

• Ripple

• Bitcoin

• ADA