Blockchain Development Frameworks (Truffle, Hardhat) BDC Practice Questions (Page 10)

Questions 46–50

1. 46foundation · easy

   Which of the following is a popular Truffle plugin?

   • Atruffle-plugin-deploy
   • Btruffle-plugin-verify
   • Chardhat-deploy
   • Dtruffle-plugin-test
   Reveal Solution Discussion Select an answer first
2. 47application · medium

   A developer has deployed a contract using Hardhat and wants to interact with it from a frontend dApp using ethers.js. They need the contract address and ABI. What is the recommended way to obtain these?

   • AHardcode the contract address and ABI in the frontend code.
   • BUse the Hardhat Runtime Environment to fetch the contract address from the frontend.
   • CUse the deployment script to write the contract address and ABI to a JSON file that the frontend can import.
   • DUse Truffle's contract abstraction to automatically load the ABI and address from the build folder.
   Reveal Solution Discussion Select an answer first
4. 48foundation · easy

   In a default Truffle project, which directory is used to store Solidity smart contracts?

   • Acontracts/
   • Bmigrations/
   • Csrc/
   • Dtest/
   Reveal Solution Discussion Select an answer first
5. 49application · medium

   A developer is setting up a new Truffle project. They want to use a custom Solidity compiler version and enable optimizations. Where should they configure these settings?

   • AIn the truffle.js file under the networks section.
   • BIn the hardhat.config.js file under the solidity section.
   • CIn the truffle-config.js file under the compilers.solc section.
   • DIn the package.json file under the dependencies section.
   Reveal Solution Discussion Select an answer first
6. 50foundation · easy

   In a Truffle project, where do you define multiple network configurations?

   • AIn the truffle-config.js file under the networks key
   • BIn the migrations folder
   • CIn the package.json file
   • DIn a separate .env file
   Reveal Solution Discussion Select an answer first