Blockchain Scaling Solutions BDC Practice Questions (Page 10)

Questions 46–50

1. 46application · medium

   A financial application must process a large volume of transactions but cannot reveal transaction details to the public main chain. The team wants fast finality and does not want a dispute window. Which scaling solution should they implement?

   • AZK-rollup that posts a zero-knowledge validity proof for each batch.
   • BState channel with off-chain settlement.
   • COptimistic rollup that posts transaction data and assumes validity.
   • DSidechain with its own consensus and periodic checkpoints.
   Reveal Solution Discussion Select an answer first
2. 47foundation · easy

   Which of the following is a Layer 1 scaling solution?

   • ASharding
   • BState channels
   • CSidechains
   • DRollups
   Reveal Solution Discussion Select an answer first
4. 48expert · hard

   A blockchain team must scale a public network to handle high throughput. They are evaluating sharding and a simpler on-chain parameter change (larger blocks). The network's community strongly values decentralization and wants to keep hardware requirements low for home nodes. Which approach better aligns with these constraints, and why?

   • ALarger blocks, because they are a Layer 2 solution that preserves decentralization better than sharding.
   • BLarger blocks, because they increase throughput without adding cross-shard communication complexity.
   • CSharding, because it eliminates the need for nodes to communicate with each other entirely.
   • DSharding, because it allows nodes to process only a subset of transactions, reducing per-node load while increasing aggregate throughput.
   Reveal Solution Discussion Select an answer first
5. 49application · medium

   A gaming company wants to allow players to make thousands of micro-transactions per day inside a game, but only needs the final balance to be recorded on the blockchain. The company wants to avoid per-transaction fees and minimize on-chain data. Which solution is most appropriate?

   • ADeploy an optimistic rollup that batches all micro-transactions into a single on-chain transaction per day.
   • BIncrease the block size on the main chain to accommodate all micro-transactions directly.
   • CUse a sidechain that processes all game transactions and periodically commits a hash to the main chain.
   • DUse a state channel where players transact off-chain and the final state is submitted to the main chain once.
   Reveal Solution Discussion Select an answer first
6. 50application · medium

   A blockchain network wants to increase throughput by changing its consensus mechanism to allow faster block production, while keeping all transactions on the main chain. Which type of scaling solution is this?

   • ALayer 1 consensus protocol improvement
   • BOff-chain sidechain deployment
   • CLayer 2 state channel implementation
   • DRollup with validity proofs
   Reveal Solution Discussion Select an answer first