Documentation & Best Practices Flashcards

Which Hyperledger project is an Ethereum client written in Java that supports public and permissioned networks?

Answer: Hyperledger Besu

Besu is an enterprise-grade Ethereum client supporting EVM smart contracts and consensus like QBFT and IBFT 2.0.

In Hyperledger Sawtooth, what are the smart contract equivalents called?

Answer: Transaction families

Sawtooth business logic is implemented in transaction processors that define transaction families.

Which tool is the Hyperledger project for benchmarking blockchain performance such as TPS and latency?

Answer: Hyperledger Caliper

Caliper runs configurable workloads against blockchain networks and reports throughput and latency.

Which Fabric client API is recommended for new applications in Fabric 2.4 and later?

Answer: Fabric Gateway client API

The Fabric Gateway service simplifies client logic by handling endorsement, submission, and commit status.

What is a recommended way to unit test chaincode logic without a running network?

Answer: Use a mock stub or mocked ChaincodeStub interface

Mocking the stub lets you test business logic quickly and repeatably before network deployment.

Which sample environment is the recommended starting point for local Fabric development per the official docs?

Answer: The test-network in fabric-samples

fabric-samples/test-network spins up a small network with two orgs and an ordering service for development.

How should chaincode releases be labeled so channel members can track upgrades?

Answer: Use clear semantic versions and increment the sequence number on each definition update

Version labels plus an incremented sequence number keep upgrades auditable under the lifecycle process.