CBSA Solution Architecture Design 3

Question 1

A blockchain architect is designing tokenomics for a decentralized marketplace. Which mechanism best prevents token hoarding and encourages circulation?

Accepted Answer

Demurrage fees on idle token balances

Answer

Demurrage fees penalize holding tokens idle, creating an economic incentive for token holders to actively use or circulate their tokens within the ecosystem.

Question 2

When designing a cross-chain asset transfer solution, which protocol provides atomic swap guarantees without requiring a trusted third party?

Accepted Answer

Hash Time-Locked Contracts (HTLCs)

Answer

HTLCs enforce atomicity by requiring both parties to reveal a cryptographic secret within a time window, ensuring either both transfers complete or both are refunded.

Question 3

An enterprise blockchain solution requires that specific transaction data be auditable by regulators but invisible to other network participants. Which Hyperledger Fabric feature addresses this?

Accepted Answer

Private Data Collections with policy-based access

Answer

Hyperledger Fabric's Private Data Collections allow specific data to be shared only with authorized organizations (like regulators) while only a hash is stored on the shared channel ledger.

Question 4

In designing a blockchain-based voting system, which architecture decision most directly prevents double-voting?

Accepted Answer

Issuing unique non-transferable tokens (soulbound) per voter

Answer

Soulbound (non-transferable) tokens tied to verified voter identities enforce the one-person-one-vote constraint at the protocol level, preventing transfer or duplication.

Question 5

A solution architect is choosing between optimistic rollups and ZK-rollups for a Layer 2 scaling solution. Which scenario favors ZK-rollups?

Accepted Answer

Applications requiring immediate withdrawal finality with strong cryptographic guarantees

Answer

ZK-rollups provide cryptographic validity proofs that enable immediate finality on L1, making them ideal when users cannot tolerate the 7-day withdrawal delay inherent in optimistic rollups.

(CBSA) Certified Blockchain Solution Architect Practice Test

(CBSA) Certified Blockchain Solution Architect Practice Test

CBSA Solution Architecture Design 3