Web 3.0 Ecosystem and Components BDC Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   How can Web3 be applied to supply chain management?

   • ABy using blockchain to provide transparent and tamper-proof tracking of goods.
   • BBy using email to communicate with suppliers.
   • CBy using a paper-based ledger for tracking.
   • DBy using a centralized database to store shipment records.
   Reveal Solution Discussion Select an answer first
2. 17application · medium

   A startup is building a dApp that lets users manage their own identity and sign transactions without creating an account with the startup. The team wants users to authenticate with a Web3 wallet and have the dApp never hold user private keys. Which approach should the team implement?

   • AIntegrate a wallet provider library so the user's browser extension signs messages and transactions locally.
   • BGenerate a private key on the server for each user and store it in an encrypted database.
   • CUse a centralized identity provider and map the user's email to a blockchain address.
   • DAsk users to email their private keys to the support team for safekeeping.
   Reveal Solution Discussion Select an answer first
4. 18application · medium

   A team is designing a dApp and wants to ensure that the application's frontend code is verifiable and not controlled by a single entity. They also want the backend logic to run on a blockchain. Which architecture best fits the dApp characteristics?

   • AA mobile app that connects to a private blockchain run by the company.
   • BClosed-source frontend hosted on a private server, with a centralized database backend.
   • COpen-source frontend hosted on a company server, with a backend API that calls a blockchain.
   • DOpen-source frontend code hosted on IPFS, with smart contracts on a public blockchain.
   Reveal Solution Discussion Select an answer first
5. 19application · medium

   An insurance company wants to automate claim payouts for flight delays. The policy states that if a flight is delayed by more than 2 hours, the insured person automatically receives compensation. The company wants the process to be transparent and not require manual claim filing. What is the most suitable Web3 solution?

   • ADeploy a smart contract that receives flight data from an oracle and automatically triggers the payout when the delay condition is met.
   • BCreate a centralized web application where users submit claims and a human agent reviews and approves them.
   • CIssue a token to every insured person and require them to redeem it manually after a delay.
   • DUse a database to track flight delays and have a script send payments through a payment gateway.
   Reveal Solution Discussion Select an answer first
6. 20application · medium

   A DeFi lending platform wants to incentivize users to provide liquidity. They plan to reward users with a token that also gives holders voting rights on platform parameters. Which type of token should they issue?

   • AA stablecoin pegged to the US dollar.
   • BA utility token that can only be used to pay platform fees.
   • CA non-fungible token (NFT) representing a unique liquidity position.
   • DA governance token that is also used as a reward for liquidity providers.
   Reveal Solution Discussion Select an answer first