CBSA Solution Deployment & Integration 3

Question 1

A Hyperledger Fabric network needs to add a new organization post-deployment. Which process is required?

Accepted Answer

Submit a channel configuration update transaction signed by existing organizations

Answer

Adding an organization requires a channel configuration update transaction that must be signed by the required existing organizations per the modification policy.

Question 2

Which consensus mechanism is best suited for a permissioned blockchain deployment where throughput is the primary concern and all participants are trusted?

Accepted Answer

Crash Fault Tolerant (CFT) ordering like Raft

Answer

CFT ordering services like Raft are optimized for high throughput in permissioned networks where Byzantine behavior (malicious nodes) is not a concern.

Question 3

When deploying smart contracts on Ethereum mainnet, what is the primary reason to use a proxy upgrade pattern?

Accepted Answer

To allow contract logic to be updated while preserving the contract address and state

Answer

The proxy upgrade pattern separates storage from logic, allowing the implementation contract to be swapped while the proxy address and stored data remain unchanged.

Question 4

A blockchain solution architect must ensure that event-driven integrations are reliable. Which pattern prevents duplicate processing of blockchain events by downstream systems?

Accepted Answer

Implementing idempotency keys and exactly-once delivery guarantees in the event consumer

Answer

Idempotency keys allow consumers to detect and safely discard duplicate events, ensuring each blockchain event is processed exactly once even if delivered multiple times.

Question 5

In a Hyperledger Fabric deployment, what is the purpose of the CouchDB state database compared to LevelDB?

Accepted Answer

CouchDB enables rich JSON queries and indexing on world state data, while LevelDB only supports key-value access

Answer

CouchDB supports complex JSON document queries and index-based searches on world state, making it suitable for applications that need more than simple key lookups.

(CBSA) Certified Blockchain Solution Architect Practice Test

(CBSA) Certified Blockchain Solution Architect Practice Test

CBSA Solution Deployment & Integration 3