A) A security breach in the blockchain network. B) A change to the underlying rules of the blockchain. C) A physical tool used to mine cryptocurrency. D) A type of digital wallet.
A) Because blockchain technology encrypts all data. B) Because the government regulates blockchain data. C) Because altering data in one block would require changing all subsequent blocks, which is computationally infeasible. D) Because the data is physically stored on a secure server.
A) 2011. B) 2010. C) 2008. D) 2009.
A) A physical component of a blockchain server. B) A type of cryptocurrency wallet. C) A computer connected to the blockchain network. D) A type of blockchain transaction.
A) A blockchain that allows anyone to join the network and participate. B) A blockchain where only a select few control access. C) A blockchain that doesn't require consensus. D) A blockchain without encryption.
A) Block validation. B) Node synchronization. C) Transaction aggregation. D) Block creation.
A) It encrypts all data on the blockchain. B) It ensures that all nodes in the network agree on the validity of transactions. C) It controls the supply of cryptocurrency. D) It determines the value of a cryptocurrency.
A) Public blockchains have faster transaction times than private blockchains. B) Private blockchains have a higher level of transparency than public blockchains. C) Public blockchains are controlled by a single entity, while private blockchains have multiple validators. D) Public blockchains are open to everyone, while private blockchains restrict access.
A) An attack that steals cryptocurrency from multiple accounts. B) An attack where a single entity controls the majority of the network's mining power. C) An attack on a forked blockchain. D) An attack that targets a specific block in the blockchain.
A) A type of blockchain fork. B) An exchange for cryptocurrencies. C) A digital asset that can represent ownership in a project or network. D) A physical object used to mine cryptocurrency.
A) The process of limiting access to blockchain data. B) The ability to alter past transactions on the blockchain. C) The concentration of control in a single entity. D) The distribution of control across multiple nodes in the network.
A) Encryption. B) Mining. C) Lock-in. D) Signing.
A) To create new cryptocurrency tokens. B) To synchronize nodes in the blockchain network. C) To establish consensus among miners. D) To efficiently store and verify the integrity of all transactions in a block.
A) A method of creating new blocks in the blockchain. B) The process of validating blockchain transactions. C) The act of spending the same cryptocurrency twice. D) A type of consensus algorithm.
A) Sports B) Finance C) Fashion D) Agriculture
A) Centralization B) Intermediaries C) Government regulation D) Decentralization
A) Litecoin B) Ethereum C) Ripple D) Bitcoin
A) By adding complex regulations B) By slowing down transaction speeds C) By increasing the number of parties involved D) By eliminating intermediaries
A) Music production B) Supply chain management C) Fitness tracking D) Artificial intelligence
A) Air pollution B) Deforestation C) High energy consumption D) Water pollution |