Project Planning & Deployment Flashcards

Which Hyperledger project is an enterprise-grade Ethereum client that supports QBFT and IBFT 2.0 consensus?

Answer: Hyperledger Besu

Besu is a Java Ethereum client that supports both public and private networks with permissioning and BFT consensus.

A project focuses on decentralized identity and verifiable credentials. Which Hyperledger project fits best?

Answer: Hyperledger Indy

Indy provides ledger and tooling for decentralized, self-sovereign identity, often paired with Aries and Ursa.

How should chaincode be tested before deployment in a CI/CD pipeline?

Answer: Unit tests with a mocked stub, followed by integration tests on a test network

Mocked-stub unit tests catch logic errors early, and integration tests on a test network validate endorsement and lifecycle behavior.

A bug is found in a deployed chaincode that wrote incorrect data. What is the proper recovery approach given ledger immutability?

Answer: Deploy a corrected chaincode version and submit compensating transactions

History cannot be altered, so fixes ship as a new chaincode definition plus compensating transactions.

For resilience in a multi-organization Fabric production network, how should Raft orderer nodes be placed?

Answer: Distributed across different failure domains and ideally across organizations

Spreading orderers across zones and organizations avoids a single point of failure and supports decentralized trust.

Why should container image versions for Fabric components be pinned in deployment manifests?

Answer: To ensure reproducible deployments and avoid unplanned upgrades that may break compatibility

Pinning prevents accidental version drift between nodes and keeps deployments repeatable.

In Hyperledger Sawtooth, where is application business logic implemented?

Answer: In transaction processors that handle specific transaction families

Sawtooth separates the core from application logic, which lives in transaction processors for transaction families.