Bitcoin Mining, Forking, and Scalability Solutions BDC Practice Questions (Page 4)

Questions 16–20

1. 16expert · hard

   A developer is evaluating scalability solutions for a Bitcoin-based application. They need to increase throughput while maintaining the security of the main chain. Which solution best balances these requirements?

   • AImplement sharding to split the blockchain into multiple shards.
   • BIncrease the block size to 8 MB to double throughput.
   • CAdopt a proof-of-stake consensus to increase speed.
   • DUse a sidechain with a two-way peg and periodic checkpoints to the main chain.
   Reveal Solution Discussion Select an answer first
2. 17foundation · easy

   How are rewards typically distributed among participants in a mining pool?

   • AEqually among all miners regardless of contribution
   • BBased on the order in which miners joined the pool
   • CProportionally to the amount of hash power each miner contributes
   • DOnly to the miner who found the block
   Reveal Solution Discussion Select an answer first
4. 18foundation · easy

   What is a potential drawback of increasing the block size to improve Bitcoin scalability?

   • AIt increases the storage and bandwidth requirements for full nodes, potentially reducing decentralization
   • BIt reduces the security of the SHA-256 algorithm
   • CIt increases the block reward for miners
   • DIt makes the difficulty adjustment more frequent
   Reveal Solution Discussion Select an answer first
5. 19application · medium

   A mining farm is comparing hardware options to maximize profitability. They have access to cheap electricity but limited space. Which hardware type offers the best hash rate per unit of space, despite higher energy consumption?

   • AGPU miners, because they are more energy-efficient and can be stacked in small spaces.
   • BFPGA miners, because they offer a balance of performance and energy efficiency.
   • CASIC miners, because they are specialized for SHA-256 and provide the highest hash rate per device.
   • DCPU miners, because they consume less power and are easier to deploy.
   Reveal Solution Discussion Select an answer first
6. 20foundation · easy

   How does SegWit fix transaction malleability?

   • ABy removing signature data from the transaction ID calculation
   • BBy using a different hashing algorithm
   • CBy requiring all transactions to be signed by multiple parties
   • DBy encrypting all transaction data
   Reveal Solution Discussion Select an answer first