Integrating DeFi with FinTech Platforms BFC Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   In a high-level architecture for integrating DeFi with a traditional FinTech platform, which component typically serves as the interface between the platform's backend and the DeFi protocols?

   • AA hardware wallet
   • BAn API gateway or middleware layer
   • CA cryptocurrency exchange
   • DA blockchain explorer
   Reveal Solution Discussion Select an answer first
2. 17application · medium

   A fintech app wants to show users their DeFi portfolio balances, including assets deposited in multiple protocols. The app's users are not technical. Which UX approach best presents this information clearly?

   • AShow a single 'Total Balance' figure that aggregates all assets across protocols, with a drill-down to see each protocol's breakdown.
   • BShow only the total balance in fiat and hide the underlying assets to avoid confusion.
   • CDisplay a separate screen for each protocol with raw transaction data and contract addresses.
   • DUse a terminal-style interface that lists all transactions in real time.
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4. 18application · medium

   A fintech platform integrates a DeFi protocol via a smart contract. A security audit reveals a critical vulnerability in the protocol's smart contract that could allow an attacker to drain funds. The protocol team has not yet released a fix. What should the platform do immediately?

   • APause the integration and withdraw all user funds from the protocol until the vulnerability is patched.
   • BIncrease the platform's insurance coverage to cover potential losses.
   • CContinue operations but monitor the protocol for any suspicious activity.
   • DAsk users to manually withdraw their funds through the protocol's interface.
   Reveal Solution Discussion Select an answer first
5. 19expert · hard

   A fintech company is reviewing a case study of a DeFi-FinTech integration that failed due to a smart contract vulnerability. The vulnerability was in a third-party library used by the platform's contract. Which lesson is most important to apply to future integrations?

   • AConduct thorough due diligence on all third-party dependencies, including their audit history and the reputation of the library maintainers.
   • BAvoid using any third-party libraries and write all code from scratch to ensure security.
   • CUse only libraries that are widely used, assuming that popularity guarantees security.
   • DRely on the platform's own audit as sufficient, without reviewing the third-party library's code.
   Reveal Solution Discussion Select an answer first
6. 20expert · hard

   A fintech platform is integrating a DeFi protocol that uses a proxy contract for upgrades. The platform's security team is worried about the risk of a malicious upgrade. Which mitigation strategy is most effective?

   • ARemove the upgrade function entirely to make the contract immutable.
   • BImplement a time-lock on the upgrade function and require a multi-signature wallet controlled by multiple independent parties to execute the upgrade.
   • CUse a single admin key to perform upgrades quickly, but rely on monitoring to detect malicious changes.
   • DAllow any user to propose an upgrade, but require a community vote to approve it.
   Reveal Solution Discussion Select an answer first