Blockchain Consensus Mechanisms and Their Applications BBLC Practice Questions (Page 12)

Questions 56–60

1. 56expert · hard

   A DPoS blockchain is facing criticism that the top 21 delegates control the network. The community wants to increase decentralization without sacrificing transaction speed. Which change is most likely to achieve this goal?

   • AReduce the number of delegates to 11 to make block production faster
   • BSwitch to a PoW consensus mechanism
   • CIncrease the number of delegates and implement a voting mechanism that reduces the influence of large token holders
   • DAllow delegates to be elected for an unlimited term
   Reveal Solution Discussion Select an answer first
2. 57application · medium

   A blockchain developer is explaining the difference between mining in Proof of Work and validation in Proof of Stake to a client. Which statement accurately describes the key difference?

   • APoW mining is used in permissioned blockchains, while PoS validation is used in public blockchains
   • BPoW mining is energy-efficient, while PoS validation is energy-intensive
   • CPoW mining provides immediate finality, while PoS validation requires multiple confirmations
   • DPoW mining requires solving computational puzzles, while PoS validation requires locking up tokens as collateral
   Reveal Solution Discussion Select an answer first
4. 58foundation · easy

   What is token burning?

   • AConverting tokens into fiat currency
   • BPermanently removing tokens from circulation, reducing the total supply
   • CCreating new tokens through mining
   • DTransferring tokens to another user
   Reveal Solution Discussion Select an answer first
5. 59foundation · easy

   Why might a supply chain blockchain choose a permissioned consensus mechanism like PBFT?

   • ABecause it needs to be open to anyone to join
   • BBecause it wants to maximize decentralization
   • CBecause the participants are known and the network requires high throughput and low latency
   • DBecause it wants to use energy-intensive mining
   Reveal Solution Discussion Select an answer first
6. 60expert · hard

   A blockchain startup is planning a token sale to fund development. They want to maximize long-term token value and community engagement, but they are concerned about regulatory compliance and the risk of a price dump after the sale. Which token distribution strategy is most likely to achieve these goals?

   • AConduct a private sale to accredited investors with a lock-up period, followed by a public sale with a cap on individual purchases, and allocate a portion for a community treasury
   • BSell tokens only to venture capital firms to secure funding
   • CAirdrop tokens to a large number of users to build a community
   • DConduct a public sale with no restrictions to maximize participation
   Reveal Solution Discussion Select an answer first