1. What is the primary mechanism for achieving consensus in Bitcoin?1 pointA) Proof of Authority (PoA)B) Proof of Work (PoW)C) Byzantine Fault Tolerance (BFT)D) Delegated Proof of Stake (DPoS)Clear selection

Which consensus mechanism is commonly associated with permissioned blockchains and relies on a predetermined set of trusted nodes to validate transactions and achieve consensus?1 pointA) Proof of Work (PoW)B) Practical Byzantine Fault Tolerance (PBFT)C) Proof of Stake (PoS)D) Delegated Proof of Authority (DPoA)

Which consensus mechanism relies on a voting process among nodes to determine the validity of transactions and achieve agreement on the state of the blockchain?1 pointA) Proof of Work (PoW)B) Delegated Proof of Authority (DPoA)C) Byzantine Fault Tolerance (BFT)D) Practical Byzantine Fault Tolerance (PBFT)

6. Which consensus algorithm aims to tolerate a certain number of faulty or malicious nodes in a distributed network?1 pointA) RAFT ConsensusB) Practical Byzantine Fault Tolerance (PBFT)C) Proof of Authority (PoA)D) Delegated Proof of Stake (DPoS)

Which consensus mechanism does Ethereum currently use? (as of early 2023)AProof of Work (PoW)BProof of Stake (PoS)CProof of Authority (PoA)DDelegated Proof of Stake (DPoS)

Which consensus mechanism is commonly associated with permissioned blockchains and is based on a leader-follower model?1 pointA) Proof of Work (PoW)B) Proof of Stake (PoS)C) RAFT ConsensusD) Delegated Byzantine Fault Tolerance (dBFT)