Cryptomining Concepts BBLC Practice Questions (Page 4)

Questions 16–20

1. 16application · medium

   A developer is explaining to a client how a new PoW blockchain validates transactions. Which statement accurately describes the role of miners in this process?

   • AMiners are randomly selected to propose a block, and other miners validate it.
   • BMiners vote on each transaction, and a majority vote determines which transactions are added.
   • CMiners hold a stake in the network and are chosen to validate transactions based on that stake.
   • DMiners compete to solve a computational puzzle, and the first to solve it adds a block of valid transactions to the chain.
   Reveal Solution Discussion Select an answer first
2. 17foundation · easy

   Why do individual miners join mining pools?

   • ATo reduce the difficulty of the cryptographic puzzle
   • BTo avoid paying transaction fees
   • CTo gain exclusive access to new cryptocurrencies
   • DTo combine computational resources and receive more consistent rewards
   Reveal Solution Discussion Select an answer first
4. 18foundation · easy

   Which of the following best describes cryptomining in a blockchain context?

   • AThe process of storing transaction records on a centralized server for faster access
   • BThe process of distributing new coins to all network participants equally
   • CThe process of encrypting transaction data to ensure privacy on the blockchain
   • DThe process of validating transactions and adding them to the blockchain through computational work
   Reveal Solution Discussion Select an answer first
5. 19expert · hard

   A blockchain consortium is debating whether to switch from PoW to PoS. Their primary concerns are energy consumption, security against a 51% attack, and the risk of centralization. They have a large community of token holders but limited hardware resources. Which option best addresses all three concerns?

   • AAdopt Proof of Stake, which reduces energy use and makes a 51% attack costly due to the need to acquire a large stake
   • BAdopt a delegated Proof of Stake (DPoS) system where a small number of delegates validate transactions
   • CUse a hybrid PoW/PoS system to balance energy and security
   • DKeep Proof of Work but use ASIC-resistant algorithms to prevent hardware centralization
   Reveal Solution Discussion Select an answer first
6. 20foundation · easy

   What is the primary function of mining software in a cryptocurrency mining operation?

   • ATo encrypt the transactions before they are added to the block
   • BTo increase the hash rate of the mining hardware
   • CTo connect the mining hardware to the blockchain network and manage the mining process
   • DTo store the blockchain ledger on the miner's device
   Reveal Solution Discussion Select an answer first