Which among the following is a consensus mechanism used in blockchains.
A. Proof of Elapsed Time(PoET)
B. Proof of Work(PoW)
C. Proof of Stake(PoS)
D. All the above
Answer:D
Which among the following is a consensus mechanism used in blockchains.
A. Proof of Elapsed Time(PoET) B. Proof of Work(PoW) C. Proof of Stake(PoS) D. All the above
Explanation: All the above are different types of consensus mechanisms. A consensus mechanism for example the PoW mechanism requires the exertion of computational power to solve a puzzle to keep all nodes in the network honest. This secures the blockchain. The PoS keep the network honest by having miners keep a stake in the network such that if they try to misbehave, their stake acts as the penalty for their misbehavior.