Interoperability Innovations BDC Practice Questions (Page 11)

Questions 51–54

1. 51foundation · easy

   What is a key trend in the future of blockchain interoperability?

   • AThe elimination of all blockchain networks except one
   • BThe use of centralized databases to replace blockchain technology
   • CThe removal of smart contracts from all blockchains
   • DThe growth of cross-chain decentralized finance (DeFi) applications
   Reveal Solution Discussion Select an answer first
2. 52application · medium

   A developer is evaluating whether to use a single blockchain or multiple interoperable blockchains for a new decentralized identity system. The system must support users from different regions with different regulatory requirements. What is the main advantage of using multiple interoperable blockchains?

   • AIt reduces the total number of nodes needed to secure the system.
   • BIt eliminates the need for identity verification.
   • CIt makes the system faster because each chain has fewer users.
   • DIt allows each region to operate under its own compliance rules while still sharing identity data across borders.
   Reveal Solution Discussion Select an answer first
4. 53application · medium

   A DeFi startup wants to let users swap Ethereum-based ERC-20 tokens for BNB Chain tokens without a centralized exchange. The team values low cost and wants to avoid trusting a single intermediary. Which approach best meets these requirements?

   • AMint wrapped tokens on BNB Chain via a trusted bridge operator
   • BDeploy a federated bridge operated by a consortium of five validators
   • CBuild a custom relay chain that monitors both networks
   • DUse an atomic swap with hash time-locked contracts on both chains
   Reveal Solution Discussion Select an answer first
5. 54foundation · easy

   What is the role of a relay chain in a cross-chain communication architecture?

   • ATo store all transaction data from every connected blockchain in a single database
   • BTo provide a user interface for interacting with multiple blockchains
   • CTo act as a central hub that validates and relays messages between connected blockchains
   • DTo replace the need for miners in all connected blockchains
   Reveal Solution Discussion Select an answer first