What is the primary goal of usability testing in dApp development?

To ensure the dApp is compatible with all wallet providers.

To test the security of the dApp's smart contracts.

To measure the transaction speed of the underlying blockchain.

To identify usability issues by observing real users interacting with the dApp.

What is the primary role of a Web3 wallet like MetaMask in a dApp interface?

To provide a user interface for browsing the blockchain explorer.

To compile and deploy smart contracts to the blockchain.

To store the dApp's backend data and serve it to users.

To manage the user's private keys and enable them to sign transactions and authenticate with the dApp.

Why is it important for a dApp to show a loading state while a transaction is being processed?

To prevent the user from interacting with the dApp until the transaction completes.

To hide the transaction details from the user for security reasons.

To allow the dApp to mine the transaction faster by showing a spinner.

To give the user visual feedback that their action is being processed and the transaction is pending.

A dApp team is testing their interface on a mobile browser and notices that the 'Connect Wallet' button is not clickable because it is covered by another element. What is the most likely cause?

The MetaMask mobile app is not installed on the device.

The button is disabled because the user is not on the correct network.

The button is using a CSS position property that places it behind a sibling element with a higher z-index.

The browser is not supporting the Web3 provider API.

Why is it important to test a dApp interface across multiple browsers (e.g., Chrome, Firefox, Brave)?

To make the dApp compatible with all browser extensions automatically.

To ensure that the dApp functions correctly and looks consistent regardless of the browser's rendering engine.

To ensure the dApp can access the user's private keys in any browser.

To increase the dApp's transaction speed by optimizing for each browser.

EC-CouncilBlockchain Developer Certification

Domain 6Objective 5

Building User-Friendly dApp Interfaces BDC Practice Questions (Page 4)

Part of the Development Tools, Web3, and dApps domain, which makes up ~11% of our current practice bank.

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Questions 16–20

16foundation · easy
What is the primary goal of usability testing in dApp development?
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17foundation · easy
What is the primary role of a Web3 wallet like MetaMask in a dApp interface?
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18foundation · easy
Why is it important for a dApp to show a loading state while a transaction is being processed?
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19application · medium
A dApp team is testing their interface on a mobile browser and notices that the 'Connect Wallet' button is not clickable because it is covered by another element. What is the most likely cause?
Select an answer first
20foundation · easy
Why is it important to test a dApp interface across multiple browsers (e.g., Chrome, Firefox, Brave)?
Select an answer first

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