Interoperability in BaaS Platforms BFC Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   A bank is considering adopting a BaaS platform to provide cross-border payment services. The bank's existing infrastructure includes multiple legacy systems that are not blockchain-based. The bank's primary goal is to reduce settlement time from days to minutes. Which BaaS interoperability capability is most important to achieve this goal?

   • AA sidechain that operates independently of the legacy systems.
   • BReal-time integration with legacy payment systems through APIs or message queues.
   • CA manual reconciliation process for cross-chain transactions.
   • DBatch processing of transactions to align with legacy system schedules.
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2. 12expert · hard

   A bank operates a BaaS platform with a sidechain for cross-border payments. The sidechain uses a federated validator set. The bank's security team discovers that a validator's private key was compromised, and the attacker has been signing fraudulent transactions on the sidechain. The main chain shows the corresponding asset transfers as legitimate. What is the most effective immediate action to limit further damage?

   • AContinue operating the sidechain while monitoring for additional fraudulent transactions.
   • BFreeze the sidechain and rotate the compromised validator's key, then replay the sidechain from the last known good state.
   • COnly rotate the compromised validator's key without freezing the sidechain.
   • DReverse the fraudulent transactions on the main chain by forking the main chain.
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4. 13foundation · easy

   When a BaaS platform enables interoperability across borders, what regulatory consideration becomes especially important?

   • AEnsuring that all participating blockchains use the same cryptocurrency
   • BEnsuring compliance with data protection and privacy laws in each jurisdiction where data is processed
   • CEnsuring that all transactions are recorded on a public ledger
   • DEnsuring that the BaaS platform is hosted in the same country as the user
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5. 14application · medium

   A mid-sized bank uses a BaaS platform to run a permissioned blockchain for cross-border payments. The bank's core banking system is a legacy mainframe that only supports batch file transfers. The bank needs to enable real-time payment initiation from the blockchain to the legacy system without manual intervention. What is the most appropriate integration pattern?

   • AUse a nightly batch job to export blockchain transactions and import them into the legacy system.
   • BDeploy an API gateway that translates blockchain events into real-time REST calls to the legacy system's middleware.
   • CManually re-enter blockchain transactions into the legacy system.
   • DReplace the legacy mainframe with a modern core banking system.
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6. 15foundation · easy

   What is a key compliance challenge when using a BaaS platform that interoperates with multiple blockchain networks?

   • AEnsuring that all networks are permissioned
   • BEnsuring that all networks use the same consensus algorithm
   • CEnsuring that all networks have the same transaction fees
   • DEnsuring that anti-money laundering (AML) and know-your-customer (KYC) requirements are met across all connected networks
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