Structure and Components of the DeFi Ecosystem BFC Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   How do DeFi components interact to create integrated financial services?

   • ABy sharing a common centralized database
   • BBy using a single protocol that provides all financial services
   • CBy requiring manual intervention from users to transfer data between protocols
   • DBy using smart contracts that call functions of other protocols, enabling seamless integration
   Reveal Solution Discussion Select an answer first
2. 2expert · hard

   A DeFi protocol is built on a blockchain that is experiencing high congestion, leading to high gas fees and slow transaction times. The team wants to improve scalability without compromising security or decentralization. Which solution is most aligned with DeFi principles?

   • AUse a layer-2 scaling solution such as a rollup that inherits the security of the main chain
   • BUse a centralized server to process transactions and settle on-chain periodically
   • CMove the protocol to a sidechain with a different consensus mechanism
   • DIncrease the block gas limit on the main chain
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   A DeFi platform is building a product that lets users deposit DAI (a stablecoin) and receive interest by lending it out. The platform also wants to allow users to use their interest-bearing tokens as collateral for borrowing other assets. Which DeFi concept is being demonstrated?

   • AInteroperability, because the platform uses different blockchains.
   • BComposability, because the platform combines lending and borrowing protocols using interest-bearing tokens.
   • CScalability, because the platform processes many transactions.
   • DTokenomics, because the platform has a native token.
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   What is the primary function of a stablecoin within the DeFi ecosystem?

   • ATo provide a highly volatile asset for speculative trading
   • BTo maintain a stable value relative to a reference asset, such as the US dollar
   • CTo serve as a governance token for protocol voting
   • DTo represent ownership in a decentralized autonomous organization (DAO)
   Reveal Solution Discussion Select an answer first
6. 5application · medium

   A DeFi lending protocol uses a smart contract to manage collateral and loans. A user wants to borrow a stablecoin by depositing ETH as collateral. The smart contract must ensure that the loan is always overcollateralized. Which smart contract feature is essential for this?

   • AA stablecoin that is pegged to the US dollar
   • BAn oracle that provides real-time ETH price data
   • CA liquidation mechanism that triggers when the collateral ratio falls below a threshold
   • DA governance token that allows users to vote on loan terms
   Reveal Solution Discussion Select an answer first