Technical and Operational Integration Models in Financial Blockchain Systems BFC Practice Questions (Page 5)

Questions 21–25

1. 21expert · hard

   A fintech startup is integrating a blockchain-based loyalty points system with its existing e-commerce platform. The platform currently uses a relational database and a REST API. The startup wants to ensure that loyalty points are awarded instantly after a purchase, but the blockchain network has a latency of 2 seconds per transaction. The startup also wants to avoid overloading the blockchain during flash sales. Which integration approach best meets these requirements?

   • ABlock the purchase until the blockchain transaction is confirmed, ensuring the points are on-chain before the customer sees them.
   • BUse a smart contract that is called synchronously from the e-commerce platform for every purchase.
   • CWrite all loyalty points to the blockchain only at the end of the day in a batch job.
   • DUse a middleware that writes loyalty points to the blockchain asynchronously, while immediately updating a local cache to reflect the points balance for the customer.
   Reveal Solution Discussion Select an answer first
2. 22foundation · easy

   Which operational activity is most directly associated with workflow design when integrating blockchain into a financial process?

   • AWriting the smart contract code that implements the business logic.
   • BMapping the sequence of steps and decision points that involve blockchain transactions.
   • CConfiguring the firewall rules for the blockchain nodes.
   • DChoosing the consensus algorithm for the blockchain network.
   Reveal Solution Discussion Select an answer first
4. 23application · medium

   A stock exchange is integrating a blockchain-based clearing and settlement system. The system must handle peak trading volumes without degrading performance. Which scalability strategy is most effective for this high-volume environment?

   • AImplement sharding to partition the blockchain into smaller, parallel chains.
   • BReduce the number of nodes in the network to improve performance.
   • CIncrease the block size to accommodate more transactions per block.
   • DUse a single, powerful server to run the blockchain network.
   Reveal Solution Discussion Select an answer first
5. 24application · medium

   A consortium of banks runs a permissioned blockchain for interbank settlements. They now want to connect this network to a public blockchain to enable stablecoin payments. Which interoperability approach would allow the two networks to exchange value and data without requiring either network to change its core protocol?

   • AHave each bank run a node on both networks and manually re-enter transactions.
   • BReplace the permissioned blockchain with the public blockchain to eliminate the need for interoperability.
   • CUse a single middleware that reads events from both chains and writes transactions to both chains independently.
   • DDeploy a cross-chain bridge with a relayer that locks assets on one chain and mints equivalent assets on the other.
   Reveal Solution Discussion Select an answer first
6. 25foundation · easy

   What is the primary purpose of interoperability standards in blockchain-based financial systems?

   • ATo prevent unauthorized access to the blockchain network.
   • BTo increase the block size of the blockchain to handle more transactions.
   • CTo ensure that all blockchain networks use the same consensus algorithm.
   • DTo enable different blockchain networks and financial systems to exchange data seamlessly.
   Reveal Solution Discussion Select an answer first