Smart Contracts and dApp Design for Business BBLC Practice Questions (Page 3)

Questions 11–15

1. 11foundation · easy

   Which UX feature is most effective for helping business users understand the status of a blockchain transaction?

   • AShowing a simple progress indicator with plain-language status updates (e.g., 'Processing...', 'Completed').
   • BDisplaying the raw transaction hash and asking users to check a block explorer.
   • CRequiring users to refresh the page to see if the transaction was successful.
   • DProviding a terminal window where users can view the raw JSON-RPC responses.
   Reveal Solution Discussion Select an answer first
2. 12application · medium

   A non-profit organization is building a dApp for donors to track how their donations are used. The dApp will show real-time allocation of funds to various projects. The donors are not technically savvy. What is the best way to present this information?

   • AShow a dashboard with simple charts and plain-language descriptions of fund allocation, updated from the blockchain.
   • BRequire donors to use a command-line interface to query the blockchain.
   • CProvide a PDF report that is manually updated each month.
   • DDisplay raw transaction hashes and smart contract addresses for each donation.
   Reveal Solution Discussion Select an answer first
4. 13expert · hard

   An energy company wants to automate peer-to-peer energy trading between households with solar panels. The system must handle thousands of transactions per day, and the participants are not technical. They also need to ensure that trades are settled automatically. What is the most suitable approach?

   • AUse a centralized server to match trades and record them on the blockchain later.
   • BUse a public blockchain with a smart contract that requires users to manually confirm each trade.
   • CUse a private blockchain with a single node to reduce costs.
   • DUse a Layer 2 solution with a smart contract that automatically settles trades, and provide a simple mobile app for users.
   Reveal Solution Discussion Select an answer first
5. 14foundation · easy

   Which deployment consideration is most relevant to ensuring a business dApp can handle a growing number of users without performance degradation?

   • AThe color scheme of the user interface.
   • BThe number of smart contract functions.
   • CThe choice of frontend framework (e.g., React vs. Vue).
   • DScalability of the underlying blockchain network.
   Reveal Solution Discussion Select an answer first
6. 15expert · hard

   A multinational corporation wants to integrate smart contracts into its procurement process. They have multiple ERP systems across different regions, each with different data formats. They also need to ensure that the integration does not disrupt existing operations. What is the best integration strategy?

   • AUse a separate smart contract for each ERP system.
   • BHave each ERP directly interact with the smart contract using its native data format.
   • CReplace all ERP systems with a single blockchain-based system.
   • DCreate a middleware layer that normalizes data from all ERPs and feeds it to the smart contract via oracles.
   Reveal Solution Discussion Select an answer first