Enterprise Blockchain Platforms and Frameworks BBLC Practice Questions (Page 9)

Questions 41–45

1. 41application · medium

   A logistics company is using Hyperledger Fabric for its supply-chain network, but it needs to share shipment status with a partner that uses Corda. The two platforms cannot directly communicate. What is the most practical approach to enable interoperability?

   • AUse a middleware integration layer that translates data between the two platforms' APIs and data formats
   • BMigrate the entire network to a single platform to avoid interoperability issues
   • CManually share shipment status via email or spreadsheets
   • DUse a public blockchain as a common intermediary for both platforms
   Reveal Solution Discussion Select an answer first
2. 42application · medium

   A company is integrating Hyperledger Fabric with its existing customer relationship management (CRM) system. The CRM system needs to trigger a blockchain transaction when a new customer is onboarded. The company wants to minimize changes to the CRM system. Which integration pattern is most appropriate?

   • AManually enter customer data into the blockchain after onboarding
   • BUse a webhook or message queue that the CRM system publishes to, and a separate service that consumes the message and invokes chaincode
   • CUse a database trigger in the CRM's database to write to the blockchain
   • DModify the CRM system to directly call the Fabric SDK
   Reveal Solution Discussion Select an answer first
4. 43foundation · easy

   How does Quorum achieve private transactions?

   • ABy using a separate blockchain for each transaction
   • BBy encrypting transaction data and only sharing it with the involved parties
   • CBy storing data off-chain only
   • DBy broadcasting all data to all nodes
   Reveal Solution Discussion Select an answer first
5. 44expert · hard

   In a Corda network, two parties are negotiating a trade. They need to ensure that the transaction is valid according to the contract and that no state is double-spent. They also want to keep the transaction details private from other nodes. Which consensus process should they use?

   • ABoth parties verify the transaction against the contract, then a notary checks uniqueness
   • BThe parties use a smart contract to verify and then broadcast to the network
   • CThe notary verifies the transaction and checks uniqueness
   • DAll nodes in the network verify the transaction and reach consensus
   Reveal Solution Discussion Select an answer first
6. 45expert · hard

   A consortium of banks and regulators is building a platform to track syndicated loans. The platform must provide a single source of truth for all participants, but each bank must only see the loan details for the loans it participates in. Regulators need to see all loan data for oversight. The team is evaluating Corda and Quorum. Which combination of features best meets these requirements?

   • AHyperledger Fabric with channels for each bank and a separate channel for regulators
   • BA custom Ethereum network with a public ledger for all loan data
   • CCorda with a notary service and the use of observer nodes for regulators
   • DQuorum with private transactions and a public state for regulators
   Reveal Solution Discussion Select an answer first