Enterprise Blockchain Platforms and Frameworks BBLC Practice Questions (Page 12)

Questions 56–59

1. 56application · medium

   A banking consortium is evaluating Quorum for a cross-border payment network. They require transaction finality within seconds and need to keep transaction details private between the two banks involved in each payment. Which Quorum features should they use?

   • AProof-of-work consensus and public transactions
   • BRaft consensus and private state
   • CIstanbul BFT consensus and private transactions
   • DProof-of-authority consensus and public state
   Reveal Solution Discussion Select an answer first
2. 57expert · hard

   A Hyperledger Fabric network is experiencing performance degradation. The network uses Raft ordering service with 10 nodes. The team notices that transaction throughput is lower than expected. They suspect the issue is related to the ordering service configuration. Which change is most likely to improve throughput without compromising fault tolerance?

   • ASwitch from Raft to Kafka ordering service
   • BIncrease the batch size and batch timeout in the ordering service configuration
   • CDisable TLS on the ordering service to reduce encryption overhead
   • DReduce the number of ordering service nodes from 10 to 3
   Reveal Solution Discussion Select an answer first
4. 58application · medium

   A consortium of insurance companies wants to automate reinsurance contracts where each contract is negotiated bilaterally between two parties. The platform must ensure that only the two parties involved in a contract can see the contract terms and that the contract is legally binding. Which platform feature is most aligned with these requirements?

   • AA custom blockchain built on Ethereum with a public ledger for all contract terms
   • BQuorum's private transactions that use encryption to hide data from all nodes except the sender and receiver
   • CHyperledger Fabric's channels that allow a group of organizations to share a private ledger
   • DCorda's peer-to-peer transaction model where states are shared only between the parties involved in the transaction
   Reveal Solution Discussion Select an answer first
5. 59application · medium

   A consortium of retailers is deploying Hyperledger Fabric to track product provenance. They need to define how new members are admitted and how disputes about data are resolved. What should they establish?

   • AA governance framework that specifies membership policies and dispute resolution procedures
   • BA central administrator who makes all decisions
   • CA public blockchain to ensure transparency
   • DA smart contract that automatically resolves all disputes
   Reveal Solution Discussion Select an answer first