Blockchain IDEs and Plugins BDC Practice Questions (Page 5)

Questions 21–25

1. 21application · medium

   A Truffle project needs to deploy to a private blockchain network that requires a specific gas price. Where should the developer configure this?

   • AIn the contract's constructor, setting the gas price
   • BIn the truffle-config.js file, under the networks section for that network
   • CIn the .env file, using a GAS_PRICE variable
   • DIn the migration file, using a gasPrice parameter
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2. 22expert · hard

   A developer is debugging a smart contract that behaves differently on a local Hardhat network compared to Sepolia. The contract uses block.timestamp and msg.sender. They suspect the issue is related to the test environment. Which approach best isolates the environment-related variables?

   • AUse Truffle's debugger to step through the transaction on Sepolia.
   • BUse Foundry's fork testing to simulate Sepolia on a local network.
   • CUse Remix's static analysis to identify potential timestamp dependency issues.
   • DUse Hardhat's console.log and run the same test on both networks, comparing the logged values.
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4. 23application · medium

   A developer uses IntelliJ IDEA for Java development and now needs to write Solidity smart contracts. They want syntax highlighting, code completion, and the ability to run Hardhat tasks from the IDE. Which plugin setup is appropriate?

   • AInstall the Truffle plugin and use it to run Hardhat tasks.
   • BInstall the Kotlin plugin and use the Foundry CLI from the terminal.
   • CInstall the Solidity plugin and configure an external tool to run Hardhat commands.
   • DInstall the Python plugin and use the Remix IDE for Solidity.
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5. 24foundation · easy

   In a blockchain IDE, what does 'stepping over' a function call do during debugging?

   • AIt executes the function without entering its internal code
   • BIt enters the function and pauses at its first line
   • CIt terminates the debugging session
   • DIt skips the function entirely and does not execute it
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6. 25application · medium

   A developer is testing a Solidity contract in Remix IDE. After deploying to the JavaScript VM, they call a function that unexpectedly reverts. They need to inspect the exact reason for the revert and the state changes leading up to it. Which Remix feature should they use?

   • AThe File Explorer, opening the contract's ABI to verify function signatures
   • BThe Deploy & Run transactions list, clicking the transaction hash to view the gas used
   • CThe Solidity compiler settings, enabling optimization to avoid the revert
   • DThe Debugger tab, stepping through the transaction and inspecting local variables and storage
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