Building User-Friendly dApp Interfaces BDC Practice Questions (Page 9)

Questions 41–45

1. 41expert · hard

   A dApp for a decentralized voting system is being tested with a small group of users. The team observes that users frequently miss the 'Confirm Vote' button because it is below the fold on mobile. The team wants to iterate on the design. Which approach is most effective?

   • AAdd a warning message that reminds users to scroll down to find the button.
   • BIncrease the button size so it is easier to see when scrolling.
   • CRemove the button and let users vote by swiping left on the candidate.
   • DMove the 'Confirm Vote' button to a sticky footer that is always visible on mobile, and conduct a follow-up usability test.
   Reveal Solution Discussion Select an answer first
2. 42application · medium

   A dApp team is auditing their interface for accessibility. They want to ensure that users who rely on screen readers can understand and interact with the dApp. Which change is most important?

   • AIncrease the contrast ratio of all text to at least 4.5:1.
   • BUse larger font sizes throughout the interface.
   • CAdd descriptive alt text to all images and ensure all interactive elements have proper ARIA labels.
   • DProvide keyboard shortcuts for all major actions.
   Reveal Solution Discussion Select an answer first
4. 43application · medium

   A dApp for a government service must be accessible to citizens with disabilities. The team is reviewing the interface for WCAG compliance. Which practice is most important to implement?

   • AMake all text small to fit more information on the screen.
   • BRely solely on color to indicate required fields in a form.
   • CProvide text alternatives for all non-text content, such as icons and images, and ensure all functionality is operable via keyboard.
   • DUse bright, flashing animations to draw attention to important alerts.
   Reveal Solution Discussion Select an answer first
5. 44application · medium

   A dApp team is designing an onboarding flow for users who are not familiar with blockchain networks. The dApp supports multiple networks (e.g., Ethereum mainnet and a testnet). What is the best way to handle network selection?

   • AHide the network selection entirely and always use the testnet.
   • BDefault to the mainnet and provide a clear message if the wallet is on a different network, with a one-click switch option.
   • CAsk the user to select a network from a dropdown during onboarding.
   • DAutomatically detect the user's wallet network and use it without asking.
   Reveal Solution Discussion Select an answer first
6. 45application · medium

   A team has built a dApp for token-based crowdfunding. Usability testing reveals that users do not understand the difference between 'Approve' and 'Transfer' transactions. The team wants to iterate on the design. Which action is most aligned with user-centered design?

   • AChange the button labels to 'Step 1' and 'Step 2' without further explanation.
   • BRemove the Approve step and combine it into a single transaction.
   • CAdd a FAQ page that explains the difference between Approve and Transfer.
   • DRedesign the transaction flow to explain each step in plain language, and test the new flow with the same user group.
   Reveal Solution Discussion Select an answer first