Project Planning & Deployment Flashcards

Which scenario is the strongest fit for a blockchain solution?

Answer: Multiple organizations that do not fully trust each other need a shared, tamper-evident record without a central intermediary

Blockchain adds value when several parties share writes to common data and lack a trusted central authority.

Why would a consortium of known banks typically choose a permissioned Hyperledger Fabric network over a public chain?

Answer: Known identities, access control, privacy and predictable performance are needed

Regulated consortia need identity-based membership, confidentiality and controlled performance.

Which Fabric design choice most directly increases transaction latency and reduces throughput?

Answer: An endorsement policy requiring signatures from many organizations

Each required endorsement adds a network round trip and chaincode execution on another organization's peer.

A project must keep personal data subject to deletion requests such as GDPR erasure. What is the recommended approach?

Answer: Store personal data off-chain and keep only a hash or reference on the ledger

Ledgers are immutable, so personal data should live off-chain with only a hash or pointer on-chain.

Which tool is the Hyperledger project used to benchmark performance such as throughput and latency of a blockchain network?

Answer: Hyperledger Caliper

Caliper runs configurable workloads against a deployed network and reports TPS and latency.

When running a proof of concept, what should be defined first?

Answer: Measurable success criteria and the business problem being validated

A PoC needs clear objectives and metrics so the outcome can justify or reject production investment.

Two organizations in a consortium need to share certain transactions without other members seeing them. Which Fabric features address this?

Answer: Private channels or private data collections

Channels isolate ledgers and private data collections restrict data to authorized organizations.