Smart Contracts and dApp Design for Business BBLC Practice Questions (Page 4)

Questions 16–20

1. 16application · medium

   A nonprofit organization is building a dApp for donors to track how their contributions are used. The donors are not technical and want to see the impact of their donations. Which UX approach best achieves this?

   • AProvide a simple dashboard that translates on-chain activity into human-readable impact statements.
   • BRequire donors to use a command-line interface to check their donation status.
   • CShow a live feed of raw transaction data, including gas fees and block numbers.
   • DSend donors a PDF report monthly with aggregated data from the blockchain.
   Reveal Solution Discussion Select an answer first
2. 17foundation · easy

   Which smart contract design pattern is commonly used to restrict access to certain functions so that only authorized users can execute them?

   • AAccess Restriction
   • BPull Payment
   • CFactory
   • DState Machine
   Reveal Solution Discussion Select an answer first
4. 18foundation · easy

   Which factor is most important to consider when integrating a smart contract with an existing enterprise system?

   • AThe smart contract should be deployed on the same server as the enterprise system.
   • BThe existing system must be migrated to a blockchain-based architecture.
   • CThe smart contract must be written in the same programming language as the existing system.
   • DThe data format and communication mechanism between the smart contract and the existing system must be compatible.
   Reveal Solution Discussion Select an answer first
5. 19application · medium

   A fintech company is deploying a dApp for peer-to-peer lending. They want to minimize gas costs for users and ensure the contract is upgradeable in case of bugs. Which deployment approach should they take?

   • AUse a state machine pattern to handle all possible states in one contract.
   • BUse a proxy pattern to separate logic and data, allowing upgrades without changing the contract address.
   • CDeploy a single monolithic smart contract with all logic and no upgrade mechanism.
   • DDeploy a new contract for each loan and abandon old ones.
   Reveal Solution Discussion Select an answer first
6. 20foundation · easy

   In a typical dApp architecture, which layer is responsible for storing large files such as images or documents, while the blockchain stores only hashes or references?

   • ADecentralized storage layer (e.g., IPFS)
   • BBlockchain layer
   • CSmart contract layer
   • DUser interface layer
   Reveal Solution Discussion Select an answer first