Building User-Friendly dApp Interfaces BDC Practice Questions (Page 3)

Questions 11–15

1. 11application · medium

   A dApp for a decentralized marketplace is accessed via a web browser. The team wants to support multiple wallet providers (e.g., MetaMask, Coinbase Wallet) without forcing users to install a specific extension. Which integration approach is most appropriate?

   • AUse a library like Web3Modal or RainbowKit that supports multiple wallet providers and provides a unified connection UI.
   • BRequire users to create an account on the dApp and store their private keys on the server.
   • CHardcode the integration for MetaMask only, since it is the most popular wallet.
   • DBuild a custom wallet connection for each provider from scratch.
   Reveal Solution Discussion Select an answer first
2. 12application · medium

   A dApp for a global supply chain is used by workers in warehouses with small screens and by managers on large monitors. The UI must be usable in both contexts. Which design approach is most effective?

   • AUse a mobile-first responsive design that scales up to larger screens, with collapsible navigation and touch-friendly controls.
   • BUse a fixed-width layout that is centered on all screens.
   • CDesign for the largest monitor first and then shrink the layout for smaller screens.
   • DCreate two separate versions of the app: one for mobile and one for desktop.
   Reveal Solution Discussion Select an answer first
4. 13foundation · easy

   In the context of dApp design, what does 'progressive disclosure' refer to?

   • AGradually revealing advanced features or information only when the user needs them, reducing cognitive load.
   • BAutomatically updating the interface with new blockchain data without user interaction.
   • CShowing all information and options at once to avoid hiding any features from the user.
   • DDisplaying a step-by-step tutorial every time the user visits the dApp.
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5. 14expert · hard

   A dApp for a decentralized insurance platform is targeting elderly users who are not familiar with blockchain. The team wants to make the interface intuitive but also must comply with accessibility standards. They are considering a 'guided mode' that walks users through each step. Which implementation best balances these goals?

   • ACreate a single-page interface with all actions visible at once to avoid multiple steps.
   • BProvide a PDF manual that explains how to use the dApp.
   • CUse a chatbot that guides users through the process using voice commands only.
   • DImplement a step-by-step wizard with large text, high contrast, keyboard navigation, and screen-reader support, and allow users to skip the wizard after the first use.
   Reveal Solution Discussion Select an answer first
6. 15application · medium

   A dApp team has completed a usability test with five target users. The test revealed that users consistently struggle to find the 'Claim Rewards' button. What is the best next step?

   • ARun a second usability test with a different group of users to confirm the issue before making any changes.
   • BAdd a tooltip to the existing button to make it more discoverable.
   • CImmediately move the button to the top of the page based on the test feedback.
   • DDesign a new placement for the button, implement it, and run another usability test to verify the improvement.
   Reveal Solution Discussion Select an answer first