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Blockchain allows for which of the following?A . Anonymous CryptographyB . Trust in central authoritiesC . A fast and efficient ledgerD . A peer to peer ledger without the need of a third partyView AnswerAnswer: D Explanation: Reference: https://intellipaat.com/blog/what-is-blockchain-technology/

Blockchain is always decentralized.A . TrueB . FalseView AnswerAnswer: A

What does P2P stand for?A . Person to PersonB . Public to PersonC . Peer to PeerD . Product to PersonE . None of the aboveView AnswerAnswer: C

Why is a private Blockchain used instead of a public one?A . To limit user access and permissionsB . It is less expensive to developC . It requires less mining power than a public BlockchainD . It requires fewer administrators to manage itView AnswerAnswer: A Explanation: Reference: https://medium.com/coinmonks/public-vs-private-blockchain-in-a-nutshell-c9fe284fa39f

Which of the following are practical use cases for Blockchain?A . VotingB . A video sharing websiteC . Medical recordsD . Identity managementE . All of the aboveView AnswerAnswer: E Explanation: Reference: https://www.mycryptopedia.com/16-promising-blockchain-use-cases/

A distributed network is always decentralized.A . TrueB . FalseView AnswerAnswer: B Explanation: Reference: https://stackoverflow.com/questions/49195562/difference-between-a-distributed-and-a­decentralized-network

A Blockchain does NOT provide which attribute?A . Security through distributionB . Anonymity through cryptographyC . Fault Tolerance through distributionD . Immutability through hashingView AnswerAnswer: B

What is a hash function?A . A one-way function that converts input to a unique string outputB . A function that stores data behind a keyC . A two-way function used for condensing informationD . The block-ID of the blockE . All the aboveView AnswerAnswer: D