CBSA Solution Deployment & Integration 4

Question 1

A blockchain architect is evaluating container orchestration for a Fabric deployment. Which Kubernetes feature is most important for maintaining peer node identity across pod restarts?

Accepted Answer

StatefulSets with persistent volume claims

Answer

StatefulSets provide stable network identities and persistent storage, ensuring peer nodes retain their cryptographic material and ledger data across pod restarts.

Question 2

During blockchain network deployment, which TLS configuration is recommended for peer-to-peer communication in Hyperledger Fabric?

Accepted Answer

Enable mutual TLS (mTLS) so both client and server authenticate each other

Answer

Mutual TLS ensures both communicating parties authenticate each other, preventing man-in-the-middle attacks even within a private network.

Question 3

A blockchain solution must integrate with an external payment processor. Which integration pattern best handles the asynchronous nature of blockchain finality?

Accepted Answer

Saga pattern with compensating transactions to handle payment and blockchain confirmation independently

Answer

The Saga pattern manages distributed transactions by coordinating steps with compensating actions if any step fails, handling the inherent asynchrony of blockchain finality.

Question 4

When deploying an Ethereum-based DApp, what is the purpose of using Infura or Alchemy as part of the architecture?

Accepted Answer

They offer managed Ethereum node endpoints, eliminating the need to run and maintain full nodes

Answer

Infura and Alchemy provide hosted Ethereum node infrastructure via APIs, allowing DApp deployments to interact with the network without operating their own full nodes.

Question 5

A blockchain network experiences high transaction latency during peak load. Which architectural change most directly addresses throughput bottlenecks in Hyperledger Fabric?

Accepted Answer

Tuning block cutting parameters (BatchSize and BatchTimeout) to optimize block formation

Answer

Tuning BatchSize and BatchTimeout controls how quickly blocks are cut, directly affecting throughput and latency tradeoffs in the ordering service.

(CBSA) Certified Blockchain Solution Architect Practice Test

(CBSA) Certified Blockchain Solution Architect Practice Test

CBSA Solution Deployment & Integration 4