CBSA Solution Architecture Design 2

Question 1

A blockchain architect is designing a supply chain solution where multiple competing companies must share data. Which architecture pattern best preserves data confidentiality between competitors?

Accepted Answer

Consortium blockchain with private channels

Answer

Public blockchain with encryption

Answer

Single-node permissioned blockchain

Answer

Centralized database with blockchain notarization

Question 2

When designing a blockchain solution for high-frequency trading, which factor most critically impacts transaction finality?

Accepted Answer

Consensus mechanism latency

Answer

Block size limits

Answer

Number of validator nodes

Answer

Smart contract complexity

Question 3

An architect needs to design a blockchain solution that stores medical records. The solution must comply with HIPAA's right-to-erasure provisions. What is the recommended approach?

Accepted Answer

Store PII off-chain with only hashes on-chain

Answer

Store all data on-chain with encryption keys

Answer

Use a public blockchain with anonymized data

Answer

Implement a hard fork to delete records

Question 4

Which design pattern is most appropriate when a blockchain solution needs to integrate with multiple legacy enterprise systems that use different data formats?

Accepted Answer

Oracle network with data transformation layer

Answer

Direct smart contract integration

Answer

Rewriting all legacy systems to support blockchain APIs

Answer

Using a single canonical data format enforced by smart contracts

Question 5

A CBSA candidate is evaluating blockchain platforms for a solution requiring 10,000+ TPS with sub-second finality. Which platform architecture best fits this requirement?

Accepted Answer

Algorand or similar pure PoS with pipelined consensus

Answer

Bitcoin with Lightning Network

Answer

Ethereum mainnet with EIP-1559

Answer

Hyperledger Fabric with optimized endorsement policy

Question 6

In a multi-cloud blockchain deployment, which architectural consideration is most critical for ensuring node synchronization consistency?

Accepted Answer

Network latency and clock synchronization across regions

Answer

Using the same cloud provider's CDN

Answer

Identical VM instance types across clouds

Answer

Single-region deployment with replication

Question 7

What is the primary architectural advantage of using a state channel pattern in a blockchain solution?

Accepted Answer

Enables off-chain transactions with on-chain settlement

Answer

Eliminates the need for smart contracts

Answer

Provides stronger cryptographic guarantees than on-chain

Answer

Removes the need for consensus mechanisms