Types of Consensus Mechanisms BFC Practice Questions (Page 5)

Questions 21–23

1. 21foundation · easy

   What is a primary advantage of Delegated Proof of Stake (DPoS) over traditional Proof of Stake (PoS)?

   • AIt achieves higher transaction throughput by limiting the number of block producers
   • BIt provides stronger security against 51% attacks
   • CIt makes the network completely permissionless and open to all
   • DIt eliminates the need for any cryptocurrency ownership
   Reveal Solution Discussion Select an answer first
2. 22expert · hard

   A new blockchain project aims to be a decentralized platform for social media, where users are rewarded for content creation. The founders want to maximize transaction throughput and user participation in governance. They are considering Delegated Proof of Stake (DPoS) because of its speed and efficiency. However, a critic argues that DPoS is too centralized and that the elected delegates could collude to censor content. What is the most effective way to address this criticism while still using DPoS?

   • AImplement a DPoS system with a large number of delegates and frequent elections, along with mechanisms for users to easily vote out malicious delegates.
   • BUse a single, trusted delegate to produce all blocks, ensuring maximum efficiency and consistency.
   • CAbandon DPoS and use Proof of Work (PoW) to ensure true decentralization and prevent censorship.
   • DUse a pure Proof of Stake (PoS) system where all token holders can directly validate transactions, eliminating the need for delegates.
   Reveal Solution Discussion Select an answer first
3. 23foundation · easy

   In Proof of Work (PoW), what does a miner need to do to add a new block to the blockchain?

   • AProve ownership of a digital certificate issued by a central authority
   • BLock up a large amount of cryptocurrency as collateral
   • CReceive votes from other network participants to become the block producer
   • DSolve a computationally difficult puzzle by finding a nonce that produces a hash below a target value
   Reveal Solution Discussion Select an answer first